Re: [sqlite] Which SQLite API return SQLITE_BUSY?
Thanks Jay for your detailed reply. I would be more happy if the SQLite documentaion include the error codes each function can return. Thanks a lot, Lloyd - Original Message - From: Jay A. Kreibich j...@kreibi.ch To: General Discussion of SQLite Database sqlite-users@sqlite.org Sent: Thursday, July 08, 2010 8:27 PM Subject: Re: [sqlite] Which SQLite API return SQLITE_BUSY? On Thu, Jul 08, 2010 at 12:42:36PM +0530, Lloyd scratched on the wall: Hi, Which are all the type of SQLite APIs can return SQLITE_BUSY? sqlite3_open_v2 sqlite3_prepare_v2 All styles of these calls, not just the _v2 versions. sqlite3_step That's the big one. sqlite3_finalize sqlite3_reset() can as well, but in the case of both _finalize() and _reset() the call itself (e.g. the finalize operation or reset operation) will always work. The error code is returned as the left over from sqlite3_step(). See the history between _prepare() and _prepare_v2(). sqlite3_bind_blob sqlite3_column_int The sqlite3_column_xxx() and sqlite3_bind_xxx() calls should not. Additionally, sqlite3_blob_open() can, however, as can some of the sqlite3_backup_xxx() calls (they use _prepare/_step internally). sqlite3_exec() and sqlite3_get_table() as well. sqlite3_close() can also return SQLITE_BUSY, but it isn't a locking issue-- it just means you forgot to finalize all the statements. IIRC, there are one or two other functions that do something similar, but they're usually pretty obvious. I think that's the bulk of it, however. -j -- Jay A. Kreibich J A Y @ K R E I B I.C H Intelligence is like underwear: it is important that you have it, but showing it to the wrong people has the tendency to make them feel uncomfortable. -- Angela Johnson ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] order of select result
Hi, Lets assume that we have a very simple without any indexing or constraints. Now we have inserted some data to the table. When we do a simple select query, is it guranteed that the rows will be retrieved in the same order as they are inserted? Thanks a lot, Lloyd __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] order of select result
Thanks Swithun. I dont have any supportive column in table to issue order by. Can it be achieved by issuing an ordr by query on row_id (used by sqlite internaly)? Thanks, Lloyd Hello L Lets assume that we have a very simple without any indexing or Lconstraints. Now we have inserted some data to the table. When we do a Lsimple select query, is it guranteed that the rows will be retrieved Lin the same order as they are inserted? No. It may look like they are being selected in the order they were inserted. But there is no guarantee. So you should use an ORDER BY clause to get the order you want. Swithun. __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] Which SQLite API return SQLITE_BUSY?
Hi, Which are all the type of SQLite APIs can return SQLITE_BUSY? sqlite3_open_v2 sqlite3_prepare_v2 sqlite3_step sqlite3_finalize sqlite3_bind_blob sqlite3_column_int Thanks, Lloyd __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] sqlite3_step returns sqlite_busy
Hi, We have a multi-threaded application (I know threads are evil, but this is a small server application). Each thread tries to access the SQLite database. When trying to get a DB handle (sqlite3_open), if it returns SQLITE_BUSY, then the thread will wait for some time and try to open it again (until it gets the handle). In our case, two threads are running, one thread is preparing an INSERT statement (It returns SQLITE_OK), then it is executed using sqlite3_step. sqlite3_step returns an SQLITE_BUSY! Is there any possibility for this? ( I think these two threads are obtaining the DB handle at the same time using sqlite_open - with wrtie permission- is it possible?) I have tried compiling the application with both -DSQLITE_THREADSAFE=2 and -DSQLITE_THREADSAFE=1. Any hint would be very helpful... Thanks a lot, Lloyd __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] EXTERNAL: sqlite3_step returns sqlite_busy
- Original Message - From: Black, Michael (IS) michael.bla...@ngc.com To: General Discussion of SQLite Database sqlite-users@sqlite.org Sent: Wednesday, July 07, 2010 5:35 PM Subject: Re: [sqlite] EXTERNAL: sqlite3_step returns sqlite_busy Of course it's possible -- multiple clients accesing the database is just fine. Is there any reason you need exclusive access for each thread in ping-pong mode? If not, just handle the BUSY in both places. I just want to ensure that the right data is read always. And also I want it to return the data always. (Even if the database is locked, I am ready to wait and open it) You men to handle the BUSY by waiting for some time and trying to execute sqlite3_step? Thanks a lot, Lloyd __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] sqlite3_step returns sqlite_busy
So it means we can have mor than one valid db handle? Thanks, Lloyd - Original Message - From: Pavel Ivanov paiva...@gmail.com To: General Discussion of SQLite Database sqlite-users@sqlite.org Sent: Wednesday, July 07, 2010 6:40 PM Subject: Re: [sqlite] sqlite3_step returns sqlite_busy one thread is preparing an INSERT statement (It returns SQLITE_OK), then it is executed using sqlite3_step. sqlite3_step returns an SQLITE_BUSY! Is there any possibility for this? Sure. Preparing INSERT statement doesn't acquire any write locks on the database. It's executing the INSERT statement that acquires locks. So if while executing statement finds that it can't get the locks then sqlite3_step returns SQLITE_BUSY. And thread-safety is irrelevant here. Pavel __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] View - What happens internally
Thank you Igor and Dan. Now I am clear about the concept. On Sat, 28 Feb 2009 20:07:45 +0530, Dan danielk1...@gmail.com wrote: On Feb 28, 2009, at 8:44 PM, Lloyd wrote: Hi, When we create a view what happens internally in sqlite? Does it select all the data from the table and then insert it in to the view? or would the records in the view keep references to records in main table? just to know whether creating more views on a big in-memory database would require more memory. A view in SQLite is just a SELECT statement that is saved in the database schema. If you do: CREATE VIEW v1 AS SELECT * FROM t1; SELECT * FROM v1; The SQL compiler (the thing that runs when you call sqlite3_prepare_v2()) converts the select statement to SELECT * FROM (SELECT * FROM t1) before compiling a prepared statement to implement the query. So adding a view doesn't require a huge amount of extra memory. Dan. Thanks, Lloyd __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQL question, probably stuipid but ...
To escape ' use cosecutive ' , i.e ''
On Wed, 18 Feb 2009 10:32:28 +0530, J. R. Westmoreland j...@jrw.org wrote:
I can't remember how to escape a ' in a string.
My statement looks something like:
insert . values ('DAY'S AVE' .);
It's been a long day.
Thanks in advance.
J. R.
J. R. Westmoreland
E-mail: j...@jrw.org
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Re: [sqlite] Updating only the last raw
Thank you very much Dan. On Fri, 2008-10-17 at 14:10 +0700, Dan wrote: On Oct 17, 2008, at 1:43 PM, Lloyd wrote: Hi, Lets assume a table having following data No. NameAddress 1 A addrA 2 B addrB 3 C addrC 4 B addrB1 I want to update the filed 'Address' based on field 'Name'. But if there are multiple table entries (The case of B), I just want to update the last entry in the table. How can I write a query for this? My present query is update mytab set Address=addr where name=B If you are using version 3.6.4 and compile with SQLITE_ENABLE_UPDATE_DELETE_LIMIT, then you can use the new syntax: UPDATE mytab SET Address='addr' WHERE name='B' ORDER BY rowid DESC LIMIT 1; Otherwise, you have to do: UPDATE mytab SET Address='addr' WHERE rowid = (SELECT max(rowid) FROM mytab WHERE name = 'B'); Dan. The output of this query would be No. NameAddress 1 A addrA 2 B addr 3 C addrC 4 B addr But the Output we want is No. NameAddress 1 A addrA 2 B addrB 3 C addrC 4 B addr If my question is not clear, I am ready to explain it more... Thanks, Lloyd __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] Testing sqlite
Hi, In the test folder of sqlite3 source distribution I saw so many test scripts. How can I run these tests? I am curious to know the various testing methods used in sqlite. Thanks, Lloyd __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] can't find libsqlite3.so.0 on RHEL
Hi Punkish, I think after installing the library, and making the path entry in the /etc/ld.so.conf (If it is not there), simply running the ldconfig command will serve your need. Regards, Lloyd On Thu, 2008-03-13 at 12:09 -0500, P Kishor wrote: I am not at all conversant with RH Linux (RHEL-es3). I have just compiled sqlite3.5.6 from amalgamation, and I get the error that libsqlite3.so.0 can't be found. I did the following ../configure make make install sqlite3 is place in /usr/local/bin and libsqlite3.so.0 is placed in /usr/local/lib [12:07 PM] /usr/local/lib$ ls -l libsql* -rw-r--r--1 root 765640 Mar 13 11:51 libsqlite3.a -rwxr-xr-x1 root 828 Mar 13 11:51 libsqlite3.la* lrwxrwxrwx1 root 19 Mar 13 11:51 libsqlite3.so - libsqlite3.so.0.8.6* lrwxrwxrwx1 root 19 Mar 13 11:51 libsqlite3.so.0 - libsqlite3.so.0.8.6* -rwxr-xr-x1 root 679734 Mar 13 11:51 libsqlite3.so.0.8.6* of course ldd -v does say [12:03 PM] ~$ ldd -v /usr/local/bin/sqlite3 libsqlite3.so.0 = not found What extra step do I have to take on this computer to make sqlite3 work properly? __ Scanned and protected by Email scanner ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] 64bit on 32bit machine
Hi, Can I know how SQLite performs 64bit operations (addition, multiplication, division) on 32bit machine? Thank you very much, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] 64bit on 32bit machine
Thanks Andy. So, SQLite doesn't have its own features to manage this? So I must be able to perform 64bit operations on a 32bit machine using C. How can I do that? or how to declare a 64bit integer on a 32bit machine? Thanks, Lloyd On Thu, 2007-07-12 at 15:06 -0500, Andrew Finkenstadt wrote: It uses the feature built-in to the language compiler that you use. In the case of Visual Studio (Microsoft, x86) the underlying compiler uses either the library implementations or direct assembly code using pairs of registers and whatever dual-register assembly instructions are available on the specific CPU. In the case of GCC, the underlying compiler uses whatever made sense in its library implementation. Usually intrinsics are used in release mode, and library functions are used in debug mode. --andy On 7/12/07, Lloyd [EMAIL PROTECTED] wrote: Hi, Can I know how SQLite performs 64bit operations (addition, multiplication, division) on 32bit machine? Thank you very much, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Re: 64bit on 32bit machine
Thanks Igor :) Regards, Lloyd On Fri, 2007-07-13 at 00:18 -0400, Igor Tandetnik wrote: Lloyd lloyd-jowPkhCZOFef0DUV/[EMAIL PROTECTED] wrote: So, SQLite doesn't have its own features to manage this? So I must be able to perform 64bit operations on a 32bit machine using C. How can I do that? or how to declare a 64bit integer on a 32bit machine? Most modern compilers provide a long long type, usually mapped to a 64-bit integer on 32-bit machines. Consult the documentation for the compiler you use. Igor Tandetnik - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] 64bit on 32bit machine
Thank you very much Andrew. Regards, Lloyd On Thu, 2007-07-12 at 23:37 -0500, Andrew Finkenstadt wrote: Use sqlite_int64 as your type. That typedef supports 'long long' or 'signed __int64' or whatever the compiler environment needs. --a On 7/12/07, Lloyd [EMAIL PROTECTED] wrote: Thanks Andy. So, SQLite doesn't have its own features to manage this? So I must be able to perform 64bit operations on a 32bit machine using C. How can I do that? or how to declare a 64bit integer on a 32bit machine? Thanks, Lloyd On Thu, 2007-07-12 at 15:06 -0500, Andrew Finkenstadt wrote: It uses the feature built-in to the language compiler that you use. In the case of Visual Studio (Microsoft, x86) the underlying compiler uses either the library implementations or direct assembly code using pairs of registers and whatever dual-register assembly instructions are available on the specific CPU. In the case of GCC, the underlying compiler uses whatever made sense in its library implementation. Usually intrinsics are used in release mode, and library functions are used in debug mode. --andy On 7/12/07, Lloyd [EMAIL PROTECTED] wrote: Hi, Can I know how SQLite performs 64bit operations (addition, multiplication, division) on 32bit machine? Thank you very much, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] reserved chars in insert
Hi, I would like to know the reserved characters which cannot be used in inserting a string.. (like ,',...). Thanks in advance, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Copying the content of a table to another table
create table x(c1 number,c2 number); create table y(v1 number,v2 number,v3 number,v4 number); insert into y (v1,v2) select c1,c2 from x; or better you can use the alter table command on your old table (here x) alter table x add v3 number; alter table x add v4 number; the following way doesn't seem to work for me alter table x add (v3 number,v4 number); Regards, Lloyd On Tue, 2007-06-05 at 11:25 +0530, Kirrthana M wrote: Hi all, I have created a table with two columns c1 and c2 and inserted some values into,in future i may include some additional columns c3,c4. to the same table.In tat case i should not loose my data in the current table,so i should be able to copy the content of the current table(values of c1 and c2) to the new table and start working with the new table and delete the existing one,could anybody give me a suggestion for doing this. Regards Kirrthana __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Monitor Queries
On Wed, 2007-05-23 at 07:21 -0700, Joe Wilson wrote: I've a black-box (Linux) program - so no source available - using a sqlite database. Is there any way I can monitor/log the queries made to the database? If it's dynamically linked, just replace libsqlite3.so with your own. How should be my own libsqlite3.so looking like. Can you explain the way I should make the library? I would like to learn this technique :) If it is statically linked and has -g symbols, use gdb. If it's stripped, x86 assembler is not that hard to learn. Thanks, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] A suggestion
In old versions it work... But in new versions (3.* I think) its not working! On Wed, 2007-05-09 at 12:11 +0200, Peter van Dijk wrote: On 9-mei-2007, at 11:06, A.J.Millan wrote: As a suggestion, and even in the risk to abuse of Mr Hipp's patience. Would it be possible to include in the command-line program (sqlite3.exe) the ability to edit, an repeat at least the five or six last commands, as in Linux?. Is to say with up-arrow and down-arrow. I believe it would be too helpful. Arrow up and down work fine for me, I'm not sure what your actual request is then? Cheers, Peter. - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Sqlite 14 (cant open database)
This error occurs only on FAT 32 file system! I have a directory with 32764 files. one of the file is my sqlite database. It seems that, when the file count reaches around this particular no. the SQLite cant open database error occurs. Can anybody give me some hint? (I am mounting FAT32 file system on my Linux) Thanks and Regards, Lloyd On Wed, 2007-04-25 at 10:13 +0530, Lloyd wrote: Hi, I am working on Redhat EL4, with sqlite3. In my application (written in C++ and wxWidgets, and I use wxSqlite3 wrapper) there a module which will be called repeatedly which in turn opens and closes the database each time the module is called. When the application runs (process the input) for short period of time (10 mins -small input) am not getting any error. But when it runs for around 1 hour (large input) I am getting an error called sqlite 14, cant open database ! What could be the reason for this particular error? Thanks and regards, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Sqlite 14 (cant open database)
Thank you Arjen. I would consider your alternative or I will go for some other file system. (Because I would have to handle files larger than 2GB) Thanks and Regards, Lloyd On Thu, 2007-05-03 at 13:52 +0200, Arjen Markus wrote: Lloyd wrote: This error occurs only on FAT 32 file system! I have a directory with 32764 files. one of the file is my sqlite database. It seems that, when the file count reaches around this particular no. the SQLite cant open database error occurs. Can anybody give me some hint? (I am mounting FAT32 file system on my Linux) That is a very large number of files! I know FAT32 can not handle files larger than 2 GB, and I imagine there is limit on the number of files as well. Try creating some subdirectories and moving the files there. The problem is most likely in the filesystem. Regards, Arjen - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Sqlite 14 (cant open database)
Hi, I am working on Redhat EL4, with sqlite3. In my application (written in C++ and wxWidgets, and I use wxSqlite3 wrapper) there a module which will be called repeatedly which in turn opens and closes the database each time the module is called. When the application runs (process the input) for short period of time (10 mins -small input) am not getting any error. But when it runs for around 1 hour (large input) I am getting an error called sqlite 14, cant open database ! What could be the reason for this particular error? Thanks and regards, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Data structure
Thank you John Stanton. This has opened new doors for me, and think it would be helpful for others in the list too.. Thanks and Regards Lloyd On Thu, 2007-04-12 at 12:34 -0500, John Stanton wrote: We use a very simple data retrieval method for smallish datasets. The data is just stored in memory or as a memory mapped file and a sequential search used. It sounds crude but when you use a fast search algorithm like Boyer-Moore it outperforms index methods up to a surprisingly large number of records. As you can imagine the code footprint is miniscule and if you add regular expression logic you can realize very intricate search patterns. We use the method in conjunction with a database to achieve an enormous speed increase on LIKE type searches. Grep a few files to get a feel for the performance. Another method which works well for memory resident storage is to implement self balancing AVL trees. The code is simple and the performance lightning fast. With a little ingenuity you can use disk storage. Mini Sql (MSql) is a good example of how this can be effective. As Einstein said - Make it as simple as possible, but not too simple. Applying Occam's Razor can turn bloated solutions into more effective lean ones. Typical solutions come in two sizes just like Army boots - too big and too small. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Data structure
Hi, I don't know whether this is an irrelevant question in SQLite list, but I don't see a better place to ask. Which data structure is best to store and retrieve data very fastly? There is a 95% chance that the searched data to be present in the data structure. There will be 1000s of nodes in the data structure and it will be searched millions of times. The data is not in any ordered form. Thanks for your information, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Data structure
hi Puneet and Martin, On Wed, 2007-04-11 at 14:27 +0100, Martin Jenkins wrote: File system cache and plenty of RAM? It is meant to run on an end user system (eg. Pentium 4 1GB RAM). If you mean Swap space as file system cache, it is also limited, may be 2GB. Puneet Kishor you haven't provided any further details about the data itself so I would venture to say -- get a computer with gobs of RAM (the new Mac Pro 8-cores can accomodate 16 GB), and use a memory based hash. Query away. Each node of the data structure will contain only very little data (A structure sizing 70 bytes and the key field would be of size maximum of 20 bytes). (I will see, what is memory based hash) Thanks and Regards, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Data structure
I was just wondering what the odds were of doing a better job than the filing system pros, how much time/code that would take on your part and how much that time would cost versus speccing a bigger/faster machine. Martin I am not fully clear. I just want my program to run at most efficient and fast even on a low profile end user system. So I am in search for the best data structure. I have heard about bloom filter, but in my case it is not applicable. The final point is, I am just searching for a data structure which is the result of lateral thinking by experts ;) (like bloom filter) Thanks, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Data structure
On Wed, 2007-04-11 at 10:00 -0500, P Kishor wrote: I think, looking from Lloyd's email address, (s)he might be limited to what CDAC, Trivandrum might be providing its users. Lloyd, you already know what size your data sets are. Esp. if it doesn't change, putting the entire dataset in RAM is the best option. If you don't need SQL capabilities, you probably can just use something like BerkeleyDB or DBD::Deep (if using Perl), and that will be plenty fast. Of course, if it can't be done then it can't be done, and you will have to recommend more RAM for the machines (the CPU seems fast enough, just the memory may be a bottleneck). Sorry, I am not talking about the limitations of the system in our side, but end user who uses our software. I want the tool to be run at its best on a low end machine also. I don't want the capabilities of a data base here. Just want to store data, search for presence, remove it when there is no more use of it. Surely I will check out BerkeleyDB. The data set must be in ram, because the total size of it is very small. (Few maga bytes) I just want to spped up the search, which is done millions of times. Thanks, LLoyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Data structure
Thank you all. I got so many new ideas from your replies. Now I just have to derive the best solution for me, thanks :) Lloyd On Wed, 2007-04-11 at 10:35 -0500, John Stanton wrote: You might discover that you can craft a very effective memory resident storage system using a compression system like Huffman Encoding and an index method appropriate to the key you are using for retrieval. That could work very well in an embedded system, have a small footprint in data and code and be very fast. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Data structure
Would anybody suggest a good tool for performance measurement (on Linux) ? On Wed, 2007-04-11 at 10:35 -0500, John Stanton wrote: You might discover that you can craft a very effective memory resident storage system using a compression system like Huffman Encoding and an index method appropriate to the key you are using for retrieval. That could work very well in an embedded system, have a small footprint in data and code and be very fast. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] What would you suggest?
Hi, I want to store and retrieve sorted integer (these integers are file offsets). So do I have to use SQLite or shall I store it in a file? (Reading from the file will be easy by using fseek()). Which would be efficient? SQLit or this file way? or do you have any other suggestions? (In this case, I will have millions of integers to store and retrieve) What the real data is a network packet dump file. I want to store and retrieve the location of each packet, in order to make packet reading a faster way from a very large dump file (in terms of GBs) Thanks, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] matching only part of a string
Hi, My table contains a text field called Name. Let the data be Name --- Abc abcd AB cab def I want to selcct all the rows which contains the term ab (not case sensitive). How can I do this? Thanks in advance, Lloyd - This email was sent using SquirrelMail. Webmail for nuts! http://squirrelmail.org/ __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] C
Even though I know this is not the right question to ask this list, I
would expect some help from you.
The question is regarding C bit fields..
struct
{
unsigned int a:1;
};
This declares a to hold 1 bit value;
How can I make an array of bit fields? something like, using the 16 bits
of a short as an array of bits
Thanks,
Lloyd
Sorry for asking irrelevant question to this list.
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Re: [sqlite] Re: C
Thanks Igor. This is what I wanted. On Thu, 2007-03-01 at 07:46 -0500, Igor Tandetnik wrote: Lloyd lloyd-jowPkhCZOFef0DUV/[EMAIL PROTECTED] wrote: How can I make an array of bit fields? something like, using the 16 bits of a short as an array of bits You can't. But, if you can use C++ rather than C, there's std::bitset class that does just that. Igor Tandetnik - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] C
Thanks John. yes, I am familiar with this way, I just wanted to know
whether there is a way to make bit field array. From Igor's reply I
understood that it is not possible in C.
Thanks,
Lloyd
On Thu, 2007-03-01 at 09:48 -0600, John Stanton wrote:
Use a mask to load from and store to your bit field/array by using a
bitwise AND ().
Lloyd wrote:
Even though I know this is not the right question to ask this list, I
would expect some help from you.
The question is regarding C bit fields..
struct
{
unsigned int a:1;
};
This declares a to hold 1 bit value;
How can I make an array of bit fields? something like, using the 16 bits
of a short as an array of bits
Thanks,
Lloyd
Sorry for asking irrelevant question to this list.
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Re: [sqlite] Abuse of the SQLite website
Would not adding verification cause a problem for those include the downloading of sqlite in bash/make files of certain apps. Lloydie T - Original Message - From: Rich Shepard [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Tuesday, January 30, 2007 2:50 PM Subject: Re: [sqlite] Abuse of the SQLite website On Tue, 30 Jan 2007, Mark Richards wrote: Returning a link that expires in an email to the requester is a method that works nicely. It does require some programming and maintenance, but would be a nice gatekeeper. Rather than this, I support the idea of an image with letters and digits in various fonts or colors (so they cannot be readily harvested by OCR methods) that are to be manually copied to a text entry field. I've no idea of the relative amounts of effort required by these different approaches, but I suspect that such images are readily available on the Web and a sufficiently large collection could be used with each presentation being arbitrary. Perhaps once this is done -- and hidden from page source view -- it would not need much maintenance. The inconvenience to us who access the site is the price we need to pay given the abuse of the 'Net and the Web. Rich -- Richard B. Shepard, Ph.D. |The Environmental Permitting Applied Ecosystem Services, Inc.| Accelerator(TM) http://www.appl-ecosys.com Voice: 503-667-4517 Fax: 503-667-8863 - To unsubscribe, send email to [EMAIL PROTECTED] - - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] A little help with count
I wish to create a query where I do a number of counts on the same table but with different filters. ie: count(id) as numrows count(id) as inrows where direction = 'In' count(id) as outrows where direction = 'Out' Could I do the above in a single query? | id | date | direction | duration | cost | | 1 |2007-01-01|In| 56 | 0.00 | | 2 |2007-01-01| Out | 60 | 0.10 | | 3 |2007-01-02| Out | 47 | 0.10 | | 4 |2007-01-02|In| 120 | 0.20 | Thx Lloydie T - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] LEMON
Ethereal make use of Lemon On Fri, 2006-12-29 at 11:08 -0400, Cesar Rodas wrote: Where can i find a tutorial with examples of how to use LEMON parser... because i need to build interpreted language Thanks to all __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
RE: [sqlite] Time zone conversion
Thanks Karthick. My code too works fine... (I made a small typo mistake in query, which executed silently) But I guess your method is the right one. Regards, Lloyd On Wed, 2006-12-20 at 16:54 +0530, Karthick V - TLS , Chennai wrote: Let the time zone given by user +0530 Therefore its 330 minutes / 13200 seconds select datetime( StartTime,'unixepoch','+13200.0 seconds') from mytable --- gives you the local time Select datetime( StartTime,'unixepoch')gives u universal time Where StartTime is an integer(unixtimestamp stored in the database) With Regards Karthick V Don't bother just to be better than your contemporaries or predecessors. Try to be better than yourself William Faulkner -Original Message- From: Lloyd [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 20, 2006 10:30 AM To: sqlite-users@sqlite.org Subject: [sqlite] Time zone conversion Hi, I would like to implement a time zone independent function. So I get the time zone information from user, and plans to convert the datetime to the time zone specified. To make it clear I give an example here StartTime is stored as an integer in the database select datetime(StartTime,'unixepoch') from mytable; will give the universal time. To get the local time, what I do is- Let the time zone given by user +0530 convert +0530 to seconds, =13200 ((5*60+30)*60), then select datetime(StartTime+13200,'unixepoch') from mytable; But it is not working as I expected. (no result is shown) what could be the reason? Is there any better way for me to achieve the same result? Thanks and Regards, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] - DISCLAIMER The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any mail and attachments please check them for viruses and defect. - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Time zone conversion
Hi, I would like to implement a time zone independent function. So I get the time zone information from user, and plans to convert the datetime to the time zone specified. To make it clear I give an example here StartTime is stored as an integer in the database select datetime(StartTime,'unixepoch') from mytable; will give the universal time. To get the local time, what I do is- Let the time zone given by user +0530 convert +0530 to seconds, =13200 ((5*60+30)*60), then select datetime(StartTime+13200,'unixepoch') from mytable; But it is not working as I expected. (no result is shown) what could be the reason? Is there any better way for me to achieve the same result? Thanks and Regards, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Query generation
Hi, I am generating queries dynamically from my program based on the input. The primary part of the query is always select a from mytable where (b=0) and based on the user input I add more where clauses to my query like select a from mytable where (b=0) and (x=10) but in one case there in no where clause to add, so my final query become select a from mytable where (b=0) and and this is a syntax error. Is there any option to add a null clause after the 'and' ? Thanks, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Query generation
Thanks, 0=0 works well enough for me. (This hint is what I wanted)
Thanks again,
Lloyd
On Wed, 2006-12-06 at 10:00 +0100, Mario Frasca wrote:
Lloyd wrote:
select a from mytable where (b=0) and
and this is a syntax error.
you're not saying which language you're using.
in Python a common solution looks like this:
clauses = []
# add strings to the clauses list, like
clauses.append('(b=0)')
# join the parts using appropriate glue
where = ' AND '.join(clauses)
sometimes I do need something like what you call an empty clause...
some engines accept 'TRUE', others don't know that literal.
I find this quite convenient:
'0=0'
hth...
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Re: [sqlite] Re: Re: ip2long
I feel little difficulty in understanding what you actually want (I thing the same is for all...). So could make it more clear? so that your problem can be solved fast! Thanks, Lloyd. Yes, they are stored as INTEGER. and the conversion outside sqlite is simple. However, I still need to SELECT the range before displaying. And without doing SELECT * maybe I should use MySQL and NET_ATON / INET_NTOA but it would be much nicer and portable in SQLite Kind regards Kevin __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Re: Re: ip2long
The way I am dealing with this is... First convert the IP to a 32bit integer. (In the system it will represented as a 32bit integer) Store it in the database. Perform the comparison operations on this stored data. Thanks, Lloyd On Mon, 2006-12-04 at 22:07 -0500, Igor Tandetnik wrote: Kevin Waterson [EMAIL PROTECTED] wrote: This one time, at band camp, Igor Tandetnik [EMAIL PROTECTED] wrote: How is the range specified? In the database the IP is 1.2.3.4 and the range is eg: 65536 I don't quite understand. To continue your example, exactly which IP addresses are considered to fall into the range 65536? How do you figure 1.2.3.4 is in this range, if indeed it is? Igor Tandetnik - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Selection Time
Hi, How much time can it take to perform 2000 selection queries on the same database ? Mostly the result set will contain only 1 raw. Is there is any way to improve the selection speed? Thanks, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Music Files
I think, Through the command line mode it is impossible. For this you have to write a program which open and reads the (binary) data in file and inserts it to the sqlite database. Thanks, Lloyd On Tue, 2006-11-28 at 13:36 +0800, LuYanJun wrote: Can anybody give a simple example for domestrating ? I am puzzled by this topic, how does a music file be sotred in DB as BLOB type? TKS. - Original Message - From: Alex Roston [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Saturday, October 28, 2006 4:35 AM Subject: Re: [sqlite] Music Files At one point there was a project that did something like this, and it was called Route66. I think it used mysql, perl and a player called splay. You might google it. Alex sebcity wrote: Is it possible to store mp3 files in a SSQLite database? would they be able to be played from the database? How would you save them? - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Journal file not getting deleted
Are you forgetting to close the database? On Fri, 2006-11-24 at 02:03 -0800, mithin wrote: Hi, In my application I am using SQLite 3 c++ API. Everything works fine till my application is open. While doing any transaction a journal file is created. Once I close the app, the journal file is not getting deleted. Also, when I close open the application again, all the newly added data is lost. Is there anything that I am missing? Thanks a lot for your time. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Database Locked
Hi, I have opened a database, created tables and inserted data to it in a single transaction. Then I have closed the data base. Then I reopened the database and tried to update the table entries. But it throws an exception called Database Locked. Where can be the mistake? I am using wxSqlite3 wrapper class. All these are performed from a single program. Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Database Locked
Thanks Clay Dowling, Yes there is a function for fanalize function. Now the problem is solved. On Tue, 2006-11-14 at 08:02 -0500, Clay Dowling wrote: Lloyd, You need at some point to call the sqlite3_finalize function. I don't use wxSqlite, but if it's not handled by the destructor of the recordset then there should be a method, possibly called finalize or close, that needs to be called. I recommend consulting the documentation for wxSQLite since most of the wxWidgets components are pretty well documented. Clay Dowling Lloyd said: I have tracked down the problem and found th following. I have a select statement which stores the result set in a pointer variable. If the result set of select statement is empty, the program executes, otherwise it gives a Database Locked error. How can I solve this problem ? Thanks again, Lloyd. On Wed, 2006-11-15 at 14:46 +0530, Lloyd wrote: Hi, I have opened a database, created tables and inserted data to it in a single transaction. Then I have closed the data base. Then I reopened the database and tried to update the table entries. But it throws an exception called Database Locked. Where can be the mistake? I am using wxSqlite3 wrapper class. All these are performed from a single program. Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Database Locked
I have tracked down the problem and found th following. I have a select statement which stores the result set in a pointer variable. If the result set of select statement is empty, the program executes, otherwise it gives a Database Locked error. How can I solve this problem ? Thanks again, Lloyd. On Wed, 2006-11-15 at 14:46 +0530, Lloyd wrote: Hi, I have opened a database, created tables and inserted data to it in a single transaction. Then I have closed the data base. Then I reopened the database and tried to update the table entries. But it throws an exception called Database Locked. Where can be the mistake? I am using wxSqlite3 wrapper class. All these are performed from a single program. Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] PHP5 with SQLite3
- Original Message - From: Rúben LÃcio [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Wednesday, November 08, 2006 1:03 PM Subject: [sqlite] PHP5 with SQLite3 Are you connecting correctly to the database. Which version of sqlite3 was the database created in. I beleive php5.1 is version 3.2.8 Hi, I'm trying to use PHP5 with SQLite 3, but it's not working. I see then the native PHP only suporte SQLite 2.8, but i can compile last version of php with SQLite 3 suport. O compile last PHP version with this line: make clean ./configure --prefix=/usr/local/php5 --enable-pdo --with-sqlite=shared --with-pdo-sqlite=shared --with-zlib --enable-track-vars --with-apxs2=/usr/local/apache2/bin/apxs --enable-sqlite-utf8 make make install phpinfo tell-me that it is ok with SQLite 3 suport. But when I try to execute query, i have that exception message: 'PDOException' with message 'SQLSTATE[HY000]: General error: 1 SQL logic error or missing database' in ... Anybody know how to correct that problem? ty Ruben -- Linux user #433535 Linux because we are freedon. - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Date data type
Hi, How can I manage date and time using sqlite? [Do I have to do it outside sqlite?] Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Date data type
Thanks gg and Craig Morrison for your informative reply. I would like to know one more thing, can I use these date and time functions with comparison operators? Will they return the correct result or as per the string comparison rules? Thanks again, Lloyd. On Tue, 2006-11-07 at 04:25 -0500, Craig Morrison wrote: Lloyd wrote: Hi, How can I manage date and time using sqlite? [Do I have to do it outside sqlite?] http://www.sqlite.org/cvstrac/wiki?p=DateAndTimeFunctions __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Retrieving date
Hi, I stored a unix epoch (32 bit integer) date in the sqlite data base. I want to retrieve it in the readable date format. For that I use the following query select datetime(sdate,'unixepoch') from mytab; It shows a formatted date, but there is some changes in the hours. How can I retrieve the accurately converted date and time ? Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Date and time
Hi, I felt sqlite's date and time functions are very useful and suits my needs. But still am not clear about one thing. I gave the following query select datetime(1162961284,'unixepoch'); 2006-11-08 04:48:04 The date is correct but the time is 5 hours lagging. So for local time correction I gave the following query select datetime(1162961284,'unixepoch','localtime'); 2006-11-08 10:18:04 The result is correct. I would like to know how sqlite is performing the localtime correction. My problem is, I am getting these time stamps from network packets, And I want to display it accurately. (as in the localtime). Which way can I prefer ? Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Date and time
Thanks Craig Morrison. Now I got the idea clearly. On Wed, 2006-11-08 at 00:55 -0500, Craig Morrison wrote: Lloyd wrote: select datetime(1162961284,'unixepoch','localtime'); 2006-11-08 10:18:04 The result is correct. I would like to know how sqlite is performing the localtime correction. timestamps are in relation to UTC.. When you use the localtime modifier, you are instructing the code to adjust the timestamp display in accordance with your local settings. IOW, the offset from UTC of your system is used in the calculation of the displayed date. Google: strftime, asctime and localtime for a better explanation. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] sqlite backup from the program.
SQLite database is stored as a normal file in the disk. Why dont you use Operating System calls to back up the file? - Original Message - From: [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Friday, November 03, 2006 2:18 PM Subject: [sqlite] sqlite backup from the program. Hi All, How to take a backup of the sqlite database (dump) from the C program. Is there any C API for that? Or is there any mechanism to achieve it? Please throw some light on it. Thanks in Advance, Regards, Ravi K The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] sqlite backup from the program.
Whether your database creation error solved? what was the problem? - Original Message - From: [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Friday, November 03, 2006 2:18 PM Subject: [sqlite] sqlite backup from the program. Hi All, How to take a backup of the sqlite database (dump) from the C program. Is there any C API for that? Or is there any mechanism to achieve it? Please throw some light on it. Thanks in Advance, Regards, Ravi K The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Memory Usage
I don't know whether I am right in this perspective. Just to know whether sqlite is causing the high memory usage, comment the commands (statements) related to sqlite and check the memory status. Thanks, Lloyd. On Mon, 2006-10-30 at 12:45 +, Nuno Lucas wrote: On 10/30/06, Ben Clewett [EMAIL PROTECTED] wrote: Nuno, Thanks for the excelent description of my error. I have learnt a little more about Linux virtual memory model. Very glad to hear Sqlite is as perfect as ever :) My problem, which is definitely my problem, is that 90 x 16MB of reserved memory is still a loss of 1.4G. Especially as I use hardly any of it. Each process has it's own virtual address space, so 16MB of reserved virtual addresses (except when they are kernel addresses) for one process doesn't do nothing to the ammount of virtual addresses free for other processes. And as each process usually has 2/3GB of virtual addresses for it's own use, 16MB is pretty low (it depends on the system, but 2 GB is the most common minimum, on 32 bits). I still find strange that your program uses so much virtual addresses, but you didn't specify (or I don't recall) what language you are using and what libraries you are linking to. You may want to investigate this further. Regards, ~Nuno Lucas - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Regarding sqlite3_open
Which platform are you using? Do you (application) have enough permission to create files in the specified location ? On Sat, 2006-10-28 at 16:19 +0530, [EMAIL PROTECTED] wrote: Hi All, I am using sqlite3_open() in my program. It is returning error code 14(file not found) every time. Where does it search for the file? I even tried with the fully qualified path, Also placing the file in the working directory. Even if the file does not exist, it should create the file and return SQLITE_OK. Please throw some light on it. Thanks, Regards, Ravi K The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] reg:SqliteDB file
Whether your question mean to open database file which is in some other location? If yes, we will be using the int sqlite3_open(const char *filename,sqlite3 **ppDb); call to open the database. In that we will have to mention the file name. There instead of using the file name simply, give the full path of the file. It will work fine. Thanks, Lloyd. On Fri, 2006-10-27 at 12:17 +0530, sandhya wrote: Hi, Is it possible to refer db file from other than the Current project location.If Yes,How can we refer(tell) the location of the DB file to the project.Please help me. Thank you all, - Sandhya __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Memory Usage
Most probably it will be a memory leak in your program. We must release the dynamically allocated memory ourselves. So check whether you are forgetting to do that. Most probably that leak will be happening inside some loops or repeatedly calling functions. On Fri, 2006-10-27 at 17:00 +0100, Ben Clewett wrote: Dear Sqlite, I very much enjoy using Sqlite, it is extremely useful. I have a memory usage query. I am linking to libsqlite3.so.0.8.6. After calling sqlite3_open(...) I find my programs data memory jumps by 16392 Kb. This seems a lot. The database I am opening is only 26K in size. I have a similar process opening about 90 times. This obviously consumes a very large amount of memory, 1.4G with 90 processes. May I ask if this is what would be expected, and whether there is anything I can do to lower this loading? Thanks for your help, Ben. - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] encrypted file
Thanks for your informative reply. I would like to know, whether I can open a database which is created using the sqlite API from a program, using the sqlite command line client? [I tried it using sqlite db name with full path and it shown the following error- Unable to open database /root/userdb: file is encrypted or is not a database . How can I open the database using sqlite command line? ] Thank you very much. Lloyd. On Tue, 2006-10-24 at 11:02 +, [EMAIL PROTECTED] wrote: Lloyd [EMAIL PROTECTED] wrote: Hi List, Whether the data base which we create through the program will be in encrypted form? The public-domain version of SQLite does not encrypt the data. But commerical extensions that encrypt the data are available. See, for example, http://www.hwaci.com/sw/sqlite/prosupport.html#crypto If yes, how can I see the result in sqlite? (How can use select statements on this database?) My application creates a database and to analyze the results in the database, it will be easy for me to use the interface provided by the sqlite. How can I open the database in SQLite ? When a database is encrypted you must supply the encryption key before reading or modifying the database. You can do this in several ways. There is a pragma: PRAGMA key=? If the database is being loaded using an ATTACH statement then you specify the key in the USING clause of the ATTACH: ATTACH DATABASE 'encrypted.db' AS e2 USING :key Or you can use the C/C++ API: sqlite3_key(db, zKey); Once the key is established, the database content is automatically decrypted as it is read from the disk and reencrypted as it is written back to the disk. If you use the command-line client, there is a special option to specify the key: sqlite3 -key 'hello' database.db After that the command-line client works just like it normally does. None of the above works in the public domain version of SQLite. You have to purchase a license for a version of SQLite that supports encryption in order to use these features. -- D. Richard Hipp [EMAIL PROTECTED] - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] encrypted file
Sorry for my mistake. I was creating database using sqlite3 API and trying to open it with sqlite command line client version 2.7 Thanks a lot. Lloyd. On Wed, 2006-10-25 at 11:51 +0530, Lloyd wrote: Thanks for your informative reply. I would like to know, whether I can open a database which is created using the sqlite API from a program, using the sqlite command line client? [I tried it using sqlite db name with full path and it shown the following error- Unable to open database /root/userdb: file is encrypted or is not a database . How can I open the database using sqlite command line? ] Thank you very much. Lloyd. On Tue, 2006-10-24 at 11:02 +, [EMAIL PROTECTED] wrote: Lloyd [EMAIL PROTECTED] wrote: Hi List, Whether the data base which we create through the program will be in encrypted form? The public-domain version of SQLite does not encrypt the data. But commerical extensions that encrypt the data are available. See, for example, http://www.hwaci.com/sw/sqlite/prosupport.html#crypto If yes, how can I see the result in sqlite? (How can use select statements on this database?) My application creates a database and to analyze the results in the database, it will be easy for me to use the interface provided by the sqlite. How can I open the database in SQLite ? When a database is encrypted you must supply the encryption key before reading or modifying the database. You can do this in several ways. There is a pragma: PRAGMA key=? If the database is being loaded using an ATTACH statement then you specify the key in the USING clause of the ATTACH: ATTACH DATABASE 'encrypted.db' AS e2 USING :key Or you can use the C/C++ API: sqlite3_key(db, zKey); Once the key is established, the database content is automatically decrypted as it is read from the disk and reencrypted as it is written back to the disk. If you use the command-line client, there is a special option to specify the key: sqlite3 -key 'hello' database.db After that the command-line client works just like it normally does. None of the above works in the public domain version of SQLite. You have to purchase a license for a version of SQLite that supports encryption in order to use these features. -- D. Richard Hipp [EMAIL PROTECTED] - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] hexadecimal
Hi list, can I insert a hexadecimal value to an integer field? if yes How can do that? Thanks, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] number problem with 3.2.8
I am using sqlite 3.2.8 which is included in PHP5.1. I seem to be having a problem doing queries where with '' to search a number. for instance if I do the following select ring_time fron calls where ring_time '10'; I get the following results 3 6 3 6 3 6 2 3 3 3 2 etc. Why? This row is varchar. Is 3.2.8 not able to work with numbers stored as varchar?
Re: [sqlite] Re: number problem with 3.2.8
I did try number literal 10 but mad no difference. I will rebuild the database row as an integer. Lloyd - Original Message - From: Igor Tandetnik [EMAIL PROTECTED] To: SQLite sqlite-users@sqlite.org Sent: Thursday, October 26, 2006 12:21 AM Subject: [sqlite] Re: number problem with 3.2.8 Lloyd Thomas lloydie-t-d/OCxD/[EMAIL PROTECTED] wrote: I am using sqlite 3.2.8 which is included in PHP5.1. I seem to be having a problem doing queries where with '' to search a number. for instance if I do the following select ring_time fron calls where ring_time '10'; I get the following results 3 6 3 6 3 6 2 3 3 3 2 etc. Why? This row is varchar. Is 3.2.8 not able to work with numbers stored as varchar? I don't see any problem. '3' is indeed greater than '10' in alphabetic order. What did you expect? If you want the values to compare as numbers, why do you store them in a string field, and why do you compare against a string literal '10' rather than numeric literal 10 ? Igor Tandetnik - To unsubscribe, send email to [EMAIL PROTECTED] - - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] encrypted file
Hi List, Whether the data base which we create through the program will be in encrypted form? If yes, how can I see the result in sqlite? (How can use select statements on this database?) My application creates a database and to analyze the results in the database, it will be easy for me to use the interface provided by the sqlite. How can I open the database in SQLite ? Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] insertion time
Hi, How much time it may take to insert or ignore into query for 30 lakhs times. It adds more than 130 sec overhead compared to the 20 sec of execution time. All these are done inside a single transaction. And these insertions are made on three tables (on each table 10 lakhs) with a combined primary key of text and integer. Is this the expected performance? Can I improve it anyway? (I am using the wxSQLite wrapper class) Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] insertion time
Hi, When this 3M inserts are performed, it takes 130 more seconds compared to the actual application running time. The actual application run time is 20 seconds but when this 3M inserts are performed it takes 150 seconds. Is there any way to reduce the time ? Thnaks, Lloyd. On Mon, 2006-10-23 at 08:44 -0600, Dennis Cote wrote: Lloyd wrote: Hi, How much time it may take to insert or ignore into query for 30 lakhs times. It adds more than 130 sec overhead compared to the 20 sec of execution time. All these are done inside a single transaction. And these insertions are made on three tables (on each table 10 lakhs) with a combined primary key of text and integer. Is this the expected performance? Can I improve it anyway? (I am using the wxSQLite wrapper class) Thanks, Lloyd. __ All, FYI, a lakh is defined as: A lakh (also spelled lac or laksha) is a unit in a traditional number system, still widely used in India and Bangladesh, equal to a hundred thousand. A hundred lakhs make a crore. So Lloyd is doing 3M insert or ignores. Lloyd, What do you mean by 130 seconds of overhead? Dennis Cote - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] See table structure
Hi List, In SQLite, to see the table structure which command can I use? (as in Oracle's desc table name ) Thanks, Lloyd __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Inserting uniquely
Hi List, Is there is any easy way to insert a value to a table, if and only if it is not existing ? For example. If I have these values 1,2,3,4,1,2,3,4 when I insert these to a table it must be 1 2 3 4 [By using primary key or unique constraint, it will work. But I dont want sqlite to throw error] How can I get this done? Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] wxSqlite- Long Insertion time
Hi All, I am using wxSqlite to develop my application. I have an insert query in my application. It adds a 16 seconds overhead to my application, otherwise it executes in 20 seconds. (Now it needs 36 seconds!). Where could be the problem? The insert query is executing only 1000 times. Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] wxSqlite- Long Insertion time
Are these inserts in 1 transaction or 1000? Yes it is in 1000 transactions. For me consistancy, atomicity...(ACID) are not a problem. But the speed of operation is major constraint. How can I achieve speed in insertion cases like this? Thanks for your informative reply. Lloyd. On Tue, 2006-10-10 at 12:51 +0100, Martin Jenkins wrote: Lloyd wrote: Where could be the problem? The insert query is executing only 1000 times. Are these inserts in 1 transaction or 1000? If the latter then it will take a long time because sqlite has to wait 1000 times for the data to be written to the disk. It's generally accepted that this takes about 2 revs of the disk - 2000 revs at 7200rpm is about 20 seconds. Martin - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Regarding sqlite3_exec
I think you are asking for this... This is the case when we use
wxSQLite3.
wxSQLite3ResultSet result = samp.ExecuteQuery(wxT(select name,age from
test));
while (result.NextRow())
{
cout (const char*)(result.GetString(0).mb_str()) result.GetInt
(1) endl;
}
On Fri, 2006-10-06 at 17:07 +0530, Vivek R wrote:
Hi List,
If I use sqlite3_exec to query a database,
How can I know that the results in the data base got over. For example If
I am expecting a 10 results in some for loop and actually there are only
five results , How can I get a notification or return value that the
results completed or Is there any way I can get SQLITE_DONE through
sqlite3_Exec. What return value I will get If I query an empty table.
Thanks and Regards,
Vivek R
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[sqlite] Installing Library
Hi All, I have downloaded the SQLite library (sqlite-3.3.7.so.gz) from the homepage. But I don't know how to install it. Please help me. My Redhat Enterprise Linux machine runs on i386 architecture. Thanks and Regards, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] SQLite under linux
Thanks everybody, I have downloaded the library RPM from http://rpm.pbone.net/ and the library name is libsqlite-3.2.1-1.i386.rpm It may be useful for newbie like me... and did as what you said. And works fine... Thanks, Lloyd. On Wed, 2006-09-27 at 10:08 +0200, Markus Hoenicka wrote: Lloyd [EMAIL PROTECTED] was heard to say: Unfortunately, I don't know how to install this library in my system. Please help me.. If I am dealing with the wrong file, please let me know from where I can get the needed installable library. Maybe you should tell us which system you run. Most Linux distributions offer SQLite as an easy-to-install package. E.g. on Debian you'd do something like: apt-get install libsqlite3-dev libsqlite3-0 sqlite3 Once that is installed, you'll just have to insert the sqlite header file into your sources and add -lsqlite3 to your gcc command line in order to build an app that uses SQLite. regards, Markus __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] SQLite under linux
Hi all, I have been trying to use SQLite with Redhat EL 4. I dont know how to link the object file. I have downloaded the sqlite-3.3.7.so. but I don't know how to link my source file with this file. As mentioned in the quick start guide I have copied the example source code for C. though I could not find the sqlite3.h file, I downloaded the source code file of the sqlite and executed the ../configure command. it worked file then I tried to make the file, but it failed, any how I got the necessary sqlite3.h file. But still I don't know from where to download the sqlite library and how to install it in my machine. Awaiting for your kind reply. Thanks and regards, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] SQLite under linux
Hi Lloyd, I had exactly the same problem being new to C++. These are the steps I took. You may find that the library files may be in a folder where RH does not expect them to be. Try 'whereis libsqlite3.so' to locate. I can't remember where the default lib folder is. you will need to add -lsqlite3 in your Makefile or compile your code with -lsqlite3. You don't mention what errors you get when the make files. Some may be able to help you further if they have that information. Lloyd T - Original Message - From: Lloyd [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Tuesday, September 26, 2006 12:45 PM Subject: [sqlite] SQLite under linux Hi all, I have been trying to use SQLite with Redhat EL 4. I dont know how to link the object file. I have downloaded the sqlite-3.3.7.so. but I don't know how to link my source file with this file. As mentioned in the quick start guide I have copied the example source code for C. though I could not find the sqlite3.h file, I downloaded the source code file of the sqlite and executed the ../configure command. it worked file then I tried to make the file, but it failed, any how I got the necessary sqlite3.h file. But still I don't know from where to download the sqlite library and how to install it in my machine. Awaiting for your kind reply. Thanks and regards, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] - - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] SQLite under linux
Hi, This too doesn't work. First of all I did not install the library, instead I copied the sqlite-3.3.7.so file to the lib folder. Then ran the ldconfig command. Then I compiled gcc sqlite.c -o sqlite - l /usr/lib/sqlite-3.3.7 It is giving the error ld connot find the file called /usr/lib/sqlite-3.3.7 How can I solve this? From where do I can get an installable copy if the SQLite library for linux? Thanks, Lloyd. On Tue, 2006-09-26 at 13:17 +0100, Lloyd Thomas wrote: Hi Lloyd, I had exactly the same problem being new to C++. These are the steps I took. You may find that the library files may be in a folder where RH does not expect them to be. Try 'whereis libsqlite3.so' to locate. I can't remember where the default lib folder is. you will need to add -lsqlite3 in your Makefile or compile your code with -lsqlite3. You don't mention what errors you get when the make files. Some may be able to help you further if they have that information. Lloyd T - Original Message - From: Lloyd [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Tuesday, September 26, 2006 12:45 PM Subject: [sqlite] SQLite under linux Hi all, I have been trying to use SQLite with Redhat EL 4. I dont know how to link the object file. I have downloaded the sqlite-3.3.7.so. but I don't know how to link my source file with this file. As mentioned in the quick start guide I have copied the example source code for C. though I could not find the sqlite3.h file, I downloaded the source code file of the sqlite and executed the ../configure command. it worked file then I tried to make the file, but it failed, any how I got the necessary sqlite3.h file. But still I don't know from where to download the sqlite library and how to install it in my machine. Awaiting for your kind reply. Thanks and regards, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] - - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] SQLite under linux
: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type .../src/tclsqlite.c:152: error: dereferencing pointer to incomplete type and the error continues How can I resole this. Please help me... Can I use the library alone without recompiling the whole sqlite? (Thus it will be easier for me to distribute my application along with sqlite) Thanks and regards, Lloyd. On Tue, 2006-09-26 at 07:52 -0400, Mark Richards wrote: To use the library, either in shared or static mode, you must first build it successfully and then install it, Please tell us your build procedure and any errors you got. /m Lloyd wrote: then I tried to make the file, but it failed, any how I got the necessary sqlite3.h file. But still I don't know from where to download the sqlite library and how to install it in my machine. Awaiting for your kind reply. - To unsubscribe, send email to [EMAIL PROTECTED] - __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] SQLite under linux
On Tue, 2006-09-26 at 19:18 +0100, Martin Jenkins wrote: If all you want to do is build an application using (some version of) sqlite then just download the library and link against it - you don't have to download the SQLite source and build it. Thanks Martin, I too wanted the same only. But I don't know how to download and install the library on my Linux. I went to the download section of the SQLite site and found a file called sqlite-3.3.7.so.gz. I think this is the library which I want. Unfortunately, I don't know how to install this library in my system. Please help me.. If I am dealing with the wrong file, please let me know from where I can get the needed installable library. Thanks for your clear and patient reply. Thanks, Lloyd. __ Scanned and protected by Email scanner - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Compiling PHP5 in order to use SQLite3
I far as i know you compile with php5-pdo-sqlite, but this was only tested on debian. Last time i looked this supports sqlite 3.2.8 and you have to use php's pdo functions and not the sqlite functions which only work with v2. - Original Message - From: Michael Young [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Friday, September 15, 2006 10:42 PM Subject: [sqlite] Compiling PHP5 in order to use SQLite3 I'm not a Unix programmer, but I would like to compile PHP5 so that it will be able to read/write SQLite3 files on my Mac. In particular, I have tried to follow the installation script suggested at www.phpmac.com for Apache 2.2.2 and PHP 5.1.4. However, this only results in a compilation that recognizes SQLite2 files. If anyone can offer advice on compiling on Mac OS Tiger, I would be most appreciative. Thanks in advance. Here's the script (modified in bold from the one suggested at www.phpmac.com) I have been using without success: ./configure --prefix=/apache2/php --with-zlib --enable-pdo=shared -- with-pdo-sqlite=shared --with-sqlite=shared --with-xml --with-ldap=/ usr --enable-cli --with-zlib-dir=/usr --enable-exif --enable-ftp -- enable-mbstring --enable-mbregex --enable-dbx --enable-sockets --with- iodbc=/usr --with-curl=/usr --with-apxs2=/apache2/bin/apxs Regards, Mike - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: Re[2]: [sqlite] A lillte help adding sqlite to a c program
I am still having some problems compiling my code. I suspect it maybe something to do with my app not linking (ld) with sqlite libraries, but I do not know how to do this or it could be something else. Can you advise? - /usr/src/logger-1.2-beta3/src/logger.cpp:731: undefined reference to `sqlite3_open' logger.o(.text+0xc99):/usr/src/logger-1.2-beta3/src/logger.cpp:732: undefined reference to `sqlite3_exec' logger.o(.text+0xcae):/usr/src/logger-1.2-beta3/src/logger.cpp:735: undefined reference to `sqlite3_free' logger.o(.text+0xcbf):/usr/src/logger-1.2-beta3/src/logger.cpp:737: undefined reference to `sqlite3_close' collect2: ld returned 1 exit status make: *** [logger] Error 1 - Original Message - From: [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Sunday, September 10, 2006 1:32 PM Subject: Re: Re[2]: [sqlite] A lillte help adding sqlite to a c program On Sun, 10 Sep 2006 13:02:58 +0100, you wrote: Thanks Teg, I have been trying to do using a basic example but still running into problems. Can you expand a little more on your example below. This is where I am so far. I am getting a bit closer bit still getting some errors. clearly I am still getting something wrong with the format of snprintf. any ideas? Hello Lloydie If you use a MS Compiler like VC++ 6 or VC++ 7 Net you can look at my HP. There is a little Example and a Wrapperclass simple to understand, desgined to handle small Databases. http://www.thlu.de Best Regards Thomas - To unsubscribe, send email to [EMAIL PROTECTED] - - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: Re[2]: [sqlite] A lillte help adding sqlite to a c program
Thanks Teg,
I have been trying to do using a basic example but still
running into problems. Can you expand a little more on your example below.
This is where I am so far.
I am getting a bit closer bit still getting some errors. clearly I am still
getting something wrong with the format of snprintf. any ideas?
errors:
logger.cpp: In function `void* start_one_channel(void*)':
logger.cpp:607: error: invalid conversion from `const char*' to `size_t'
logger.cpp:607: error: initializing argument 2 of `int snprintf(char*,
size_t, const char*, ...)'
logger.cpp:629: error: jump to case label
logger.cpp:603: error: crosses initialization of `char*zErrMsg'
make: *** [logger.o] Error 1
---
code:-
char *zErrMsg = 0;
char *sql;
int rc;
sqlite3 *db;
snprintf(sql, insert into call_data (direction, call_time, dest,
trunk_no, file_name)values(\'%s\',\'%s\',\'%s\',\'%s\',\'%s\'),
details.inout, details.statime,details.cidn,
details.channel,details.filename);//line 607
rc = sqlite3_open(/var/tmp/logger/database/logger.db, db); //line
608
rc = sqlite3_exec(db, sql, NULL, 0, zErrMsg);
if( rc!=SQLITE_OK ){
//fprintf(stderr, SQL error: %s\n, zErrMsg);
sqlite3_free(zErrMsg);
}
sqlite3_close(db);
---
Lloydie T
- Original Message -
From: Teg [EMAIL PROTECTED]
To: Lloyd Thomas sqlite-users@sqlite.org
Sent: Sunday, September 10, 2006 12:47 AM
Subject: Re[2]: [sqlite] A lillte help adding sqlite to a c program
Hello Lloyd,
You need to escape the quotes. Remember in C and C++ means the
beginning or end of a literal string so, when you want to embed quotes
in a string you have to escape them. Probaby \.
You'd be better off using the paramaterized version of the SQL
std::string sql = insert into call_data (direction, call_time, dest,
trunk_no,
file_name)values(?,?,?,?,?);;
Then bind the actual parameters after the fact.
C
Saturday, September 9, 2006, 7:02:43 PM, you wrote:
LT Jay, Thanks for your reply.
LT I gave it a try with and got a few errors. as follows
LT ---
LT logger.cpp:609: error: invalid operands of types `const char[80]' and
LT `char[4]' to binary `operator+'
LT logger.cpp:615: error: `t' was not declared in this scope
LT logger.cpp:615: warning: unused variable 't'
LT logger.cpp:634: error: jump to case label
LT logger.cpp:631: error: crosses initialization of `std::string test2'
LT logger.cpp:628: error: crosses initialization of `std::string test1'
LT logger.cpp:637: error: jump to case label
LT logger.cpp:631: error: crosses initialization of `std::string test2'
LT logger.cpp:628: error: crosses initialization of `std::string test1'
LT logger.cpp:638: error: jump to case label
LT logger.cpp:631: error: crosses initialization of `std::string test2'
LT logger.cpp:628: error: crosses initialization of `std::string test1'
LT logger.cpp:639: error: jump to case label
LT logger.cpp:631: error: crosses initialization of `std::string test2'
LT logger.cpp:628: error: crosses initialization of `std::string test1'
LT logger.cpp:641: error: `t' was not declared in this scope
LT logger.cpp:641: warning: unused variable 't'
LT logger.cpp:664: error: jump to case label
LT logger.cpp:621: error: crosses initialization of `bool Loop'
LT logger.cpp:634: warning: destructor needed for `test2'
LT logger.cpp:634: warning: where case label appears here
LT logger.cpp:634: warning: (enclose actions of previous case statements
LT requiring destructors in their own scope.)
LT logger.cpp:637: warning: destructor needed for `test2'
LT logger.cpp:637: warning: where case label appears here
LT logger.cpp:638: warning: destructor needed for `test2'
LT logger.cpp:638: warning: where case label appears here
LT logger.cpp:639: warning: destructor needed for `test2'
LT logger.cpp:639: warning: where case label appears here
LT make: *** [logger.o] Error 1
LT --
LT line 609 =
LT sql = insert into call_data (direction, call_time, dest, trunk_no,
LT
file_name)values('+details.inout+','+details.statime+','+details.cidn+'+details.channel+','+details.filename+');
LT - Original Message -
LT From: Jay Sprenkle [EMAIL PROTECTED]
LT To: sqlite-users@sqlite.org
LT Sent: Saturday, September 09, 2006 11:16 PM
LT Subject: Re: [sqlite] A lillte help adding sqlite to a c program
On 9/9/06, Lloyd Thomas [EMAIL PROTECTED] wrote:
I know nothing of C++ and therefore need a lilte help editing a C++ app
to
insert some records into a database.
here's an example to read from a database.
If you build the sql like you're doing and you use it on the web you
leave yourself
open to sql injection attacks. Using the bind
Re: Re[2]: [sqlite] A lillte help adding sqlite to a c program
Nearly there just a couple of outstanding issues any help apreciated
Error:--
make: Warning: File `logger.cpp' has modification time 45 s in the future
g++ -c -Wall -O -g logger.cpp -o logger.o
logger.cpp: In function `void* start_one_channel(void*)':
logger.cpp:607: warning: format argument is not a pointer (arg 6)
logger.cpp:629: error: jump to case label
logger.cpp:603: error: crosses initialization of `char*zErrMsg'
make: *** [logger.o] Error 1
code sample:---
char *zErrMsg = 0;
char sql[200];
int rc;
sqlite3 *db;
sprintf(sql, insert into call_data (direction, call_time, dest,
trunk_no, file_name)values('%s','%s','%s','%s','%s'), details.inout,
details.statime,details.cidn,channel,details.filename);
rc = sqlite3_open(/var/tmp/logger/database/logger.db, db);
rc = sqlite3_exec(db, sql, NULL, 0, zErrMsg);
if( rc!=SQLITE_OK ){
//fprintf(stderr, SQL error: %s\n, zErrMsg);
sqlite3_free(zErrMsg);
}
sqlite3_close(db);
LOGIT([%02d] sql string = %s\n,channel,sql);
// Clear out details ready for next call
details.inout[0] = 0;
details.filename[0] = 0;
details.statime[0] = 0;
details.endtime[0] = 0;
details.cidn[0] = 0;
details.cidt[0] = 0;
strcpy(details.term, );
break;
default: // Any thing else ??
break;
}
break;
-
- Original Message -
From: [EMAIL PROTECTED]
To: sqlite-users@sqlite.org
Sent: Sunday, September 10, 2006 1:32 PM
Subject: Re: Re[2]: [sqlite] A lillte help adding sqlite to a c program
On Sun, 10 Sep 2006 13:02:58 +0100, you wrote:
Thanks Teg,
I have been trying to do using a basic example but still
running into problems. Can you expand a little more on your example below.
This is where I am so far.
I am getting a bit closer bit still getting some errors. clearly I am still
getting something wrong with the format of snprintf. any ideas?
Hello Lloydie
If you use a MS Compiler like VC++ 6 or VC++ 7 Net you can look at
my HP. There is a little Example and a Wrapperclass simple to
understand, desgined to handle small Databases.
http://www.thlu.de
Best Regards
Thomas
-
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-
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[sqlite] A lillte help adding sqlite to a c program
I know nothing of C++ and therefore need a lilte help editing a C++ app to insert some records into a database. This is where I am so far #include sqlite.h sqlite *db; //insert record into database db=sqlite_open(/var/tmp/logger/database/logger.db, 0, NULL); query = insert into call_data; query += (direction, call_time, dest, trunk_no, file_name)values(; query += 'details.inout','details.statime','details.cidn','details.channel','details.filename; sqlite_exec(db, query, NULL, NULL, NULL); sqlite_close(db); -- Can someone tell me if I am going in the right direction. Sorry for being so lazy,but I need to get something working quick. Lloydie T - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] A lillte help adding sqlite to a c program
Jay, Thanks for your reply.
I gave it a try with and got a few errors. as follows
---
logger.cpp:609: error: invalid operands of types `const char[80]' and
`char[4]' to binary `operator+'
logger.cpp:615: error: `t' was not declared in this scope
logger.cpp:615: warning: unused variable 't'
logger.cpp:634: error: jump to case label
logger.cpp:631: error: crosses initialization of `std::string test2'
logger.cpp:628: error: crosses initialization of `std::string test1'
logger.cpp:637: error: jump to case label
logger.cpp:631: error: crosses initialization of `std::string test2'
logger.cpp:628: error: crosses initialization of `std::string test1'
logger.cpp:638: error: jump to case label
logger.cpp:631: error: crosses initialization of `std::string test2'
logger.cpp:628: error: crosses initialization of `std::string test1'
logger.cpp:639: error: jump to case label
logger.cpp:631: error: crosses initialization of `std::string test2'
logger.cpp:628: error: crosses initialization of `std::string test1'
logger.cpp:641: error: `t' was not declared in this scope
logger.cpp:641: warning: unused variable 't'
logger.cpp:664: error: jump to case label
logger.cpp:621: error: crosses initialization of `bool Loop'
logger.cpp:634: warning: destructor needed for `test2'
logger.cpp:634: warning: where case label appears here
logger.cpp:634: warning: (enclose actions of previous case statements
requiring destructors in their own scope.)
logger.cpp:637: warning: destructor needed for `test2'
logger.cpp:637: warning: where case label appears here
logger.cpp:638: warning: destructor needed for `test2'
logger.cpp:638: warning: where case label appears here
logger.cpp:639: warning: destructor needed for `test2'
logger.cpp:639: warning: where case label appears here
make: *** [logger.o] Error 1
--
line 609 =
sql = insert into call_data (direction, call_time, dest, trunk_no,
file_name)values('+details.inout+','+details.statime+','+details.cidn+'+details.channel+','+details.filename+');
- Original Message -
From: Jay Sprenkle [EMAIL PROTECTED]
To: sqlite-users@sqlite.org
Sent: Saturday, September 09, 2006 11:16 PM
Subject: Re: [sqlite] A lillte help adding sqlite to a c program
On 9/9/06, Lloyd Thomas [EMAIL PROTECTED] wrote:
I know nothing of C++ and therefore need a lilte help editing a C++ app
to
insert some records into a database.
here's an example to read from a database.
If you build the sql like you're doing and you use it on the web you
leave yourself
open to sql injection attacks. Using the bind() method eliminates that
vulnerability.
Something to consider.
Jay
Here's some example code:
sqlite3*db;
// connect to database
if ( sqlite3_open( test.db, db ) )
throw Can't open database;
char* sql;
sql = SELECT one.test1, two.test2
FROM one
INNER JOIN two ON one.id = two.id
;
sqlite3_stmt* pStmt;
if ( sqlite3_prepare( db, sql, strlen(sql), pStmt, NULL ) != SQLITE_OK )
{
string str = Cannot prepare sql: ;
str += sql[t];
str += , Error: ;
str += sqlite3_errmsg(db);
throw str.c_str();
}
bool Loop = true;
while ( Loop )
switch ( sqlite3_step( pStmt ) )
{
case SQLITE_ROW:
// retrieve the results
char* p = (char *) sqlite3_column_text( pStmt, 0 );
string test1 = string( p ? p : );
p = (char *) sqlite3_column_text( pStmt, 1 );
string test2 = string( p ? p : );
break;
case SQLITE_DONE:
Loop = false;
break;
case SQLITE_BUSY:
case SQLITE_LOCKED:
default:
string str = Cannot execute sql: ;
str += sql[t];
str += , Error: ;
str += sqlite3_errmsg(db);
throw str.c_str();
break;
}
// clean up when finished
sqlite3_finalize( pStmt );
sqlite3_close( db );
--
SqliteImporter and SqliteReplicator: Command line utilities for Sqlite
http://www.reddawn.net/~jsprenkl/Sqlite
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http://www.cthulhubucks.com
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Re: Re[2]: [sqlite] A lillte help adding sqlite to a c program
if I could somehow create the following string as a char i cpuld probably
get the code to work.
sql = insert into call_data (direction, call_time, dest,
trunk_no, file_name)values(';
sql += details.inout;
sql += ',';
sql += details.statime;
sql += ',';
sql += details.cidn;
sql += ';
sql +=details.channel;
sql += ',';
sql += details.filename;
sql += ');
I am getting stuck adding exist chars to the sql char
defined chars
^^
sql = insert into call_data(direction,
call_time)values('details.inout','details.statime)
Do you have any ideas?
Lloydie T
- Original Message -
From: Teg [EMAIL PROTECTED]
To: Lloyd Thomas sqlite-users@sqlite.org
Sent: Sunday, September 10, 2006 12:47 AM
Subject: Re[2]: [sqlite] A lillte help adding sqlite to a c program
Hello Lloyd,
You need to escape the quotes. Remember in C and C++ means the
beginning or end of a literal string so, when you want to embed quotes
in a string you have to escape them. Probaby \.
You'd be better off using the paramaterized version of the SQL
std::string sql = insert into call_data (direction, call_time, dest,
trunk_no,
file_name)values(?,?,?,?,?);;
Then bind the actual parameters after the fact.
C
Saturday, September 9, 2006, 7:02:43 PM, you wrote:
LT Jay, Thanks for your reply.
LT I gave it a try with and got a few errors. as follows
LT ---
LT logger.cpp:609: error: invalid operands of types `const char[80]' and
LT `char[4]' to binary `operator+'
LT logger.cpp:615: error: `t' was not declared in this scope
LT logger.cpp:615: warning: unused variable 't'
LT logger.cpp:634: error: jump to case label
LT logger.cpp:631: error: crosses initialization of `std::string test2'
LT logger.cpp:628: error: crosses initialization of `std::string test1'
LT logger.cpp:637: error: jump to case label
LT logger.cpp:631: error: crosses initialization of `std::string test2'
LT logger.cpp:628: error: crosses initialization of `std::string test1'
LT logger.cpp:638: error: jump to case label
LT logger.cpp:631: error: crosses initialization of `std::string test2'
LT logger.cpp:628: error: crosses initialization of `std::string test1'
LT logger.cpp:639: error: jump to case label
LT logger.cpp:631: error: crosses initialization of `std::string test2'
LT logger.cpp:628: error: crosses initialization of `std::string test1'
LT logger.cpp:641: error: `t' was not declared in this scope
LT logger.cpp:641: warning: unused variable 't'
LT logger.cpp:664: error: jump to case label
LT logger.cpp:621: error: crosses initialization of `bool Loop'
LT logger.cpp:634: warning: destructor needed for `test2'
LT logger.cpp:634: warning: where case label appears here
LT logger.cpp:634: warning: (enclose actions of previous case statements
LT requiring destructors in their own scope.)
LT logger.cpp:637: warning: destructor needed for `test2'
LT logger.cpp:637: warning: where case label appears here
LT logger.cpp:638: warning: destructor needed for `test2'
LT logger.cpp:638: warning: where case label appears here
LT logger.cpp:639: warning: destructor needed for `test2'
LT logger.cpp:639: warning: where case label appears here
LT make: *** [logger.o] Error 1
LT --
LT line 609 =
LT sql = insert into call_data (direction, call_time, dest, trunk_no,
LT
file_name)values('+details.inout+','+details.statime+','+details.cidn+'+details.channel+','+details.filename+');
LT - Original Message -
LT From: Jay Sprenkle [EMAIL PROTECTED]
LT To: sqlite-users@sqlite.org
LT Sent: Saturday, September 09, 2006 11:16 PM
LT Subject: Re: [sqlite] A lillte help adding sqlite to a c program
On 9/9/06, Lloyd Thomas [EMAIL PROTECTED] wrote:
I know nothing of C++ and therefore need a lilte help editing a C++ app
to
insert some records into a database.
here's an example to read from a database.
If you build the sql like you're doing and you use it on the web you
leave yourself
open to sql injection attacks. Using the bind() method eliminates that
vulnerability.
Something to consider.
Jay
Here's some example code:
sqlite3*db;
// connect to database
if ( sqlite3_open( test.db, db ) )
throw Can't open database;
char* sql;
sql = SELECT one.test1, two.test2
FROM one
INNER JOIN two ON one.id = two.id
;
sqlite3_stmt* pStmt;
if ( sqlite3_prepare( db, sql, strlen(sql), pStmt, NULL ) !=
SQLITE_OK )
{
string str = Cannot prepare sql: ;
str += sql[t];
str += , Error: ;
str += sqlite3_errmsg(db);
throw str.c_str();
}
bool Loop = true;
while ( Loop )
switch ( sqlite3_step( pStmt ) )
{
case
[sqlite] Wierd between results
I am not sure if I am being crazy, but I seem to be getting a wierd result when using 'BETWEEN'. if use SELECT count(call_id) as num_rows WHERE ring_time BETWEEN 6 and 10; I get 0 results but if I do SELECT count(call_id) as num_rows WHERE ring_time = 7; I get 39 results SELECT count(call_id) as num_rows WHERE ring_time 6 and ring_time 10; Also gives 0 results. Where am I going wrong? sqlite 3.2.8 windows XP Lloydie-T
Re: [sqlite] Wierd between results
If i do SELECT count(call_id) as num_rows WHERE ring_time BETWEEN 10 and 6; I get 633 results. Is that normal? - Original Message - From: Lloyd Thomas [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Saturday, March 25, 2006 3:48 PM Subject: [sqlite] Wierd between results I am not sure if I am being crazy, but I seem to be getting a wierd result when using 'BETWEEN'. if use SELECT count(call_id) as num_rows WHERE ring_time BETWEEN 6 and 10; I get 0 results but if I do SELECT count(call_id) as num_rows WHERE ring_time = 7; I get 39 results SELECT count(call_id) as num_rows WHERE ring_time 6 and ring_time 10; Also gives 0 results. Where am I going wrong? sqlite 3.2.8 windows XP Lloydie-T
Re: [sqlite] Wierd between results
Go back to my original problem if I change 'between 6 and 10' to 'between 6 and 9', I get the expected results. SELECT count(call_id) as num_rows WHERE ring_time BETWEEN 6 and 9; 232 Am I finding a bug or is my syntax incorrect? - Original Message - From: Lloyd Thomas [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Saturday, March 25, 2006 4:14 PM Subject: Re: [sqlite] Wierd between results If i do SELECT count(call_id) as num_rows WHERE ring_time BETWEEN 10 and 6; I get 633 results. Is that normal? - Original Message - From: Lloyd Thomas [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Saturday, March 25, 2006 3:48 PM Subject: [sqlite] Wierd between results I am not sure if I am being crazy, but I seem to be getting a wierd result when using 'BETWEEN'. if use SELECT count(call_id) as num_rows WHERE ring_time BETWEEN 6 and 10; I get 0 results but if I do SELECT count(call_id) as num_rows WHERE ring_time = 7; I get 39 results SELECT count(call_id) as num_rows WHERE ring_time 6 and ring_time 10; Also gives 0 results. Where am I going wrong? sqlite 3.2.8 windows XP Lloydie-T
Re: [sqlite] Wierd between results
Yeah I did. sorry about the rushed typing. DRH managed to sort it out for me. I had imported a ver 2 database to version 3 and changed a time values to integers, but forgot to change the column to integer. Lloydie-T - Original Message - From: Kurt Welgehausen [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Saturday, March 25, 2006 5:39 PM Subject: Re: [sqlite] Wierd between results Lloyd Thomas [EMAIL PROTECTED] wrote: if use SELECT count(call_id) as num_rows WHERE ring_time BETWEEN 6 and 10; I get 0 results You DID specify a table in your actual queries, didn't you? select * from tbl; t x y -- -- -- 1 100 101 2 100 102 3 100 103 4 100 103 5 200 210 6 200 220 7 200 230 8 300 199 select count(t) from tbl where y=103; count(t) -- 2 select count(t) from tbl where y between 102 and 210; count(t) -- 5 Regards
[sqlite] Help with multiple join
As you can tell I am no sql guru. Is there anyway I could do the following without 'group by'. query: SELECT C.call_id, C.extn_no, C.dest, U.group_name FROM call_data AS C, grp_user AS G, user_grp AS U LEFT JOIN user_grp ON G.group_id = U.group_id LEFT JOIN grp_user ON C.extn_no = G.extn_no WHERE C.direction = 'Out' AND C.extn_no IN (select extn_no FROM grp_user) GROUP BY C.call_id, C.extn_no, C.dest, U.group_name table data call_data table call_id |extn_no|dest | 1 |201 |012087562978| 2 |201 |079087562879| 3 |200 |018657562072| 4 |203 |018693263202| user_grp table group_id|group_name | 1 |ideal CT | grp_user table group_id|extn_no| 1 |200 | 1 |201 | Lloydie T
Re: [sqlite] Building sqlite 3.2.8 on redhat 9 (off list)
Thanks Kimball Your right about having a little experience. I am just running into error after error installing apps, but I'm learnoing slowly. Anyway, I was trying to install the sqlite support for another application I want to use and as a side issue it seems to have installed sqlite 3.2.8 correctly for me. It would be good if I could type sqlite3 at the prompt and it would just start. Lloyd - Original Message - From: Arjen Markus [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, January 03, 2006 7:51 AM Subject: Re: [sqlite] Building sqlite 3.2.8 on redhat 9 (off list) Lloyd Thomas wrote: There does not seem to be a library file in /usr/lib/ called libsqlite3.so.0. would that be the problem. Please bear with me I am a linux newbie. Hello Lloyd, my reply may be a bit too detailed, but I assume you have very little experience with Linux/UNIX. So bare with me if the explanations are too basic. What about /usr/local/lib? That is the usual place for packages/libraries that are not part of the operating system. You can print the current setting of LD_LIBRARY_PATH by typing: echo $LD_LIBRARY_PATH on the prompt. It is a list of directories that the loader/linker will look at in search of shared objects. The sqlite3 library must be contained in any of these. If you find it in a different directory not listed there, you need to set LD_LIBRARY_PATH: export LD_LIBRARY_PATH=/your/new/directory:$LD_LIBRARY_PATH or: setenv LD_LIBRARY_PATH /your/new/directory:$LD_LIBRARY_PATH (Presumably the first, the second form is specific to the C-shell, and you probably have bash.) What directory (the prefix option) did you use for installing SQLite? That is the directory where the library will live in (or in the subdirectory lib of that directory). Hope this helps. Regards, Arjen
Re: [sqlite] Building sqlite 3.2.8 on redhat 9 (off list)
The precompiled version did work. I was just trying to compile it myself to get experience building a linux box. Lloyd - Original Message - From: [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Tuesday, January 03, 2006 1:29 PM Subject: Re: [sqlite] Building sqlite 3.2.8 on redhat 9 (off list) Lloyd Thomas [EMAIL PROTECTED] wrote: Thanks Kimball Your right about having a little experience. I am just running into error after error installing apps, but I'm learnoing slowly. Anyway, I was trying to install the sqlite support for another application I want to use and as a side issue it seems to have installed sqlite 3.2.8 correctly for me. It would be good if I could type sqlite3 at the prompt and it would just start. Did the precompiled binary on the website not work for you? http://www.sqlite.org/download.html -- D. Richard Hipp [EMAIL PROTECTED]
Re: [sqlite] Building sqlite 3.2.8 on redhat 9
I have compilted tcl, but had a problem with tk. having compiled sqlite3 I get a new error trying to run sqlite3 = 'sqlite3: error while loading shared libraries: libsqlite3.so.0: cannot open shared object file: No such file or diretory' Any Ideas? Lloyd - Original Message - From: Dan Kennedy [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Monday, January 02, 2006 5:37 AM Subject: Re: [sqlite] Building sqlite 3.2.8 on redhat 9 If possible, the easiest way around this is to install Active-tcl. Or compile the tcl library yourself. For a long time the stock tcl install in redhat was problematic. http://www.activestate.com/Products/ActiveTcl/ --- Lloyd Thomas [EMAIL PROTECTED] wrote: I am having a problem building sqlite on my redhat 9 box. There seems to be a problem with TCL. I am no linux guru, so it some one can poinjt me in the right direction that would be great. here is as far as I get [EMAIL PROTECTED] sqlite-3.2.8]# make ./libtool --mode=compile cc -g -O2 -DOS_UNIX=1 -DHAVE_USLEEP=1 -I. -I./src -DNDEBUG -DTHREADSAFE=0 -DSQLITE_OMIT_CURSOR -c ./src/tclsqlite.c gcc -g -O2 -DOS_UNIX=1 -DHAVE_USLEEP=1 -I. -I./src -DNDEBUG -DTHREADSAFE=0 -DSQLITE_OMIT_CURSOR -c ./src/tclsqlite.c -fPIC -DPIC -o .libs/tclsqlite.o src/tclsqlite.c: In function `tclSqlFunc': src/tclsqlite.c:372: warning: passing arg 1 of `Tcl_NewByteArrayObj' discards qualifiers from pointer target type src/tclsqlite.c:380: warning: assignment makes pointer from integer without a cast src/tclsqlite.c:438: `Tcl_WideInt' undeclared (first use in this function) src/tclsqlite.c:438: (Each undeclared identifier is reported only once src/tclsqlite.c:438: for each function it appears in.) src/tclsqlite.c:438: parse error before v src/tclsqlite.c:439: `v' undeclared (first use in this function) src/tclsqlite.c: In function `DbObjCmd': src/tclsqlite.c:636: warning: passing arg 3 of `Tcl_GetIndexFromObj' from incompatible pointer type src/tclsqlite.c:1252: warning: passing arg 2 of `Tcl_GetVar2Ex' discards qualifiers from pointer target type src/tclsqlite.c:1274: `Tcl_WideInt' undeclared (first use in this function) src/tclsqlite.c:1274: parse error before v src/tclsqlite.c:1275: `v' undeclared (first use in this function) src/tclsqlite.c:1325: warning: passing arg 1 of `Tcl_NewByteArrayObj' discards qualifiers from pointer target type src/tclsqlite.c:1333: warning: assignment makes pointer from integer without a cast src/tclsqlite.c:1773: warning: passing arg 3 of `Tcl_GetIndexFromObj' from incompatible pointer type src/tclsqlite.c: In function `DbMain': src/tclsqlite.c:1918: warning: passing arg 2 of `Tcl_CreateObjCommand' discards qualifiers from pointer target type make: *** [tclsqlite.lo] Error 1 -- __ Yahoo! for Good - Make a difference this year. http://brand.yahoo.com/cybergivingweek2005/
Re: [sqlite] Building sqlite 3.2.8 on redhat 9
There does not seem to be a library file in /usr/lib/ called libsqlite3.so.0. would that be the problem. Please bear with me I am a linux newbie. Lloyd - Original Message - From: Arjen Markus [EMAIL PROTECTED] To: sqlite-users@sqlite.org Sent: Monday, January 02, 2006 12:13 PM Subject: Re: [sqlite] Building sqlite 3.2.8 on redhat 9 Lloyd Thomas wrote: I have compilted tcl, but had a problem with tk. having compiled sqlite3 I get a new error trying to run sqlite3 = 'sqlite3: error while loading shared libraries: libsqlite3.so.0: cannot open shared object file: No such file or diretory' That seems a common problem with shared objects/libraries ... they have to be in the path of the dynamic linker/loader. Have you set LD_LIBRARY_PATH properly? Regards, Arjen
[sqlite] Building sqlite 3.2.8 on redhat 9
I am having a problem building sqlite on my redhat 9 box. There seems to be a problem with TCL. I am no linux guru, so it some one can poinjt me in the right direction that would be great. here is as far as I get [EMAIL PROTECTED] sqlite-3.2.8]# make ./libtool --mode=compile gcc -g -O2 -DOS_UNIX=1 -DHAVE_USLEEP=1 -I. -I./src -DNDEBUG -DTHREADSAFE=0 -DSQLITE_OMIT_CURSOR -c ./src/tclsqlite.c gcc -g -O2 -DOS_UNIX=1 -DHAVE_USLEEP=1 -I. -I./src -DNDEBUG -DTHREADSAFE=0 -DSQLITE_OMIT_CURSOR -c ./src/tclsqlite.c -fPIC -DPIC -o .libs/tclsqlite.o src/tclsqlite.c: In function `tclSqlFunc': src/tclsqlite.c:372: warning: passing arg 1 of `Tcl_NewByteArrayObj' discards qualifiers from pointer target type src/tclsqlite.c:380: warning: assignment makes pointer from integer without a cast src/tclsqlite.c:438: `Tcl_WideInt' undeclared (first use in this function) src/tclsqlite.c:438: (Each undeclared identifier is reported only once src/tclsqlite.c:438: for each function it appears in.) src/tclsqlite.c:438: parse error before v src/tclsqlite.c:439: `v' undeclared (first use in this function) src/tclsqlite.c: In function `DbObjCmd': src/tclsqlite.c:636: warning: passing arg 3 of `Tcl_GetIndexFromObj' from incompatible pointer type src/tclsqlite.c:1252: warning: passing arg 2 of `Tcl_GetVar2Ex' discards qualifiers from pointer target type src/tclsqlite.c:1274: `Tcl_WideInt' undeclared (first use in this function) src/tclsqlite.c:1274: parse error before v src/tclsqlite.c:1275: `v' undeclared (first use in this function) src/tclsqlite.c:1325: warning: passing arg 1 of `Tcl_NewByteArrayObj' discards qualifiers from pointer target type src/tclsqlite.c:1333: warning: assignment makes pointer from integer without a cast src/tclsqlite.c:1773: warning: passing arg 3 of `Tcl_GetIndexFromObj' from incompatible pointer type src/tclsqlite.c: In function `DbMain': src/tclsqlite.c:1918: warning: passing arg 2 of `Tcl_CreateObjCommand' discards qualifiers from pointer target type make: *** [tclsqlite.lo] Error 1 --
[sqlite] built-in functrion suggestion: size of blob
I look into the build in function of SQLite and saw there is a function to know the length of a string (in a record). Great! But to my disbelief there is (apparently) no way to get the size of a blob (other than loading it :-() And no, length() doesn't work on Blob. I think it would be a worthy addition! Or is there already an (undocumented) such addition?
