Re: [sqlite] Performance Issue on Large Table

Am 23.02.2020 um 20:23 schrieb Richard Damon: An amount of 140 tables in such a "BibleVersions.db" is not uncommon and can be managed by SQLite in a good performance. I'm not sure that form of division would be good. One basic rule of database normalization is that you don't break-up data

Re: [sqlite] Performance Issue on Large Table

Am 21.02.2020 um 02:24 schrieb Chip Beaulieu: I have a table with 4.5 million records with full text indexing. > Reads are very fast, but deleting / inserting / updating takes on average about 50 seconds per record. I often do batches of 30,000 deletes / inserts at a time. The last batch took

[sqlite] SQLITE_HAS_CODEC

Have just seen (in https://www.sqlite.org/src/timeline), that this compiletime-option was removed (2020-02-07). Speaking as a wrapper-author... Are there alternatives in sight, to further support: - a "ReKey"-feature in a relatively compatible manner, without breaking existing (user-)code,

Re: [sqlite] New word to replace "serverless"

Am 28.01.2020 um 12:18 schrieb Richard Hipp: On 1/28/20, Howard Chu wrote: Wait, really? AFAICS embedded means in-process, no IPC required to operate. Things like MySQL-embedded and H2 run a "server" as a thread instead of as a separate process. Clients then use Inter-Thread Communication

Re: [sqlite] Standard deviation last x entries

Am 18.10.2019 um 19:45 schrieb Bart Smissaert: Regarding: With r(s2, s, i) As (Select 2, 1, 1 Union All Select s2, (s2>0)*(s+s2/s)*.5, i+1 From r Where Abs(s2-s*s)>1e-12 Limit 32 ) Select s From r Order By i Desc Limit 1 How would this work if I wanted to update all the values in a table

Re: [sqlite] Standard deviation last x entries

Am 12.10.2019 um 16:47 schrieb Bart Smissaert: Sorry, I forgot to tell that. It is date column with an integer number. ID xValue xDate 1 130 40123 1 120 41232 1 140 40582 1 100 40888 1 110 42541 2 140 41225 2 130 41589 2 150

Re: [sqlite] Table was deleted on macOS

Am 15.10.2019 um 23:53 schrieb Simon Slavin: ... There is no reason for a table to disappear. But sometimes intent... ;-) Maybe one of the App-Users is an xkcd-fan... https://xkcd.com/327/ @the OP Don't tell us now, that the table in question was indeed named "Students"... Olaf

Re: [sqlite] Windows app to read SQLite DB, and launch web browser when dbl-clicking a record?

Am 19.10.2018 um 16:02 schrieb Winfried: I have a bunch of hyperlinks in an SQLite database, and need to read each page for validation before deleting the record. To make it easier, the DB manager should launch the default web browser when I double click on a column that contains a hyperlink.

Re: [sqlite] how into insert row into middle of table with integer primary key

Am 22.11.2017 um 01:29 schrieb Jens Alfke: When I’ve run into this before, the requirement has been to support lists with customizable ordering, like an outliner where the user can freely drag the rows up and down. Yep. And therefore such cases should be handled at the App-Level IMO...

Re: [sqlite] Small Performance Regression (3.21.0)

Am 28.10.2017 um 23:00 schrieb Richard Hipp: On 10/27/17, Olaf Schmidt <n...@vbrichclient.com> wrote: The new CoRoutine-approach seems to slow down certain ViewDefinitions (in comparison to running a Query directly). Can you please download and try the latest "Prerelease Snapshot&

Re: [sqlite] Small Performance Regression (3.21.0)

Am 28.10.2017 um 19:22 schrieb Bart Smissaert: This is interesting, not so much for the performance regression, but for the fact that the posted Northwind database has spaces in table names and view names. I wasn't aware this is allowed and it caused a lot of errors in my app. I have this

Re: [sqlite] Small Performance Regression (3.21.0)

Am 27.10.2017 um 21:11 schrieb Richard Hipp: Thanks for the report. Do you have any other interesting, complex, or slow queries using your database that you can send me for testing purposes? With regards to the NWind.db, the Invoices-View is the one with the largest processing-time. NWind.db

Re: [sqlite] Small Performance Regression (3.21.0)

Am 27.10.2017 um 21:59 schrieb David Raymond: Also getting 31ms for both... Thanks for testing that guys... I was able to get similar timings (about 30msec), when the (quite large) resultset-output was delegated into a file... To avoid doing expensive File-IO in that test, I'd recommend to

[sqlite] Small Performance Regression (3.21.0)

The new CoRoutine-approach seems to slow down certain ViewDefinitions (in comparison to running a Query directly). FWIW, here's a download-link to an NorthWind-SQLite-DB, which already contains certain view-definitions: http://vbRichClient.com/Downloads/NWind.zip (an "Analyze"-command was

Re: [sqlite] Bulk load strategy

Am 17.05.2017 um 19:08 schrieb David Raymond: The unique index on DistinguishedName though is what gets used for that sub query of the insert, so most definitely keep that one index for the whole load. (The others can be left out until the end though) I once had a similar scenario, and

Re: [sqlite] how to use sqlite from classic ASP with no installation...

Am 29.06.2016 um 07:52 schrieb Olaf Schmidt: Sorry, the line below (of the Test-Script) does not match with the little "folder-layout" I've mentioned in my previous post - so it needs to be adapted to the concrete (absolute or relative) path, where the manifest (along with the

Re: [sqlite] how to use sqlite from classic ASP with no installation...

Am 24.06.2016 um 10:48 schrieb Dominique Lagree: I have a classic ASP application running on Windows / IIS to provide that would use an sqlite database. ... How can we access to sqlite through an interface (oledb ?) that could be called from classic ASP vbscript and could run just from a copy

[sqlite] Multiple in-memory database table query

Am 19.04.2016 um 20:34 schrieb Jarred Ford: > Is it possible to create multiple in-memory databases and be able to access > tables with a single query between them? For example, select * from > db1.dbo.table1 db1 join db2.dbo.table1 db2 on db1.x = db2.x. Yes, that's possible over appropriate

[sqlite] sqlite in vba7.1 and windows 8.1

Am 19.02.2016 um 14:31 schrieb Montes C?mara, Victor: > I've been using sqlite in vba6 for some years > using RichClient3 framework of Olaf Schmidt (www.datenhaus.de) The new site (which offers a new version of the RichClient, as well as new versions of __stdcall-compiled SQLite...

Re: [sqlite] Feature Request: Binding Arrays

Am 31.10.2013 14:09, schrieb Dominique Devienne: [Userdefined functions in conjunction with fast Exists-checks in "Userland" - vs. SQLites built-in indexing in case of In (List)] I'm not convinced by this. The "real table" can be quite large, several 100's to 100,000's rows (up to 1+ million

Re: [sqlite] Feature Request: Binding Arrays

Am 29.10.2013 13:19, schrieb Dominique Devienne: So, after those functions are in place - where's the problem with: select * from table where InMySmallUnsortedArrayExists(some_column) select * from table where InMyLargerSortedArrayExists(some_column) select * from table where

Re: [sqlite] vbscript and sqlltie

Am 27.10.2013 08:41, schrieb Joe Fuller: I’m trying t access sqllite database via vbscript. I don’t want to use odbc just ado.net. I'm pretty sure vbScript doesn't support .NET class-instancing directly, vbScript wants COM-(Dlls, to instantiate classes from). This is the sort of thing I’ve

Re: [sqlite] Feature Request: Binding Arrays

Am 16.10.2013 10:40, schrieb Dominique Devienne: If I somehow missed a better work-around to this lack of array-binding, I'm also interested of course, but obviously I'd prefer real array binding. Maybe I'm missing something - but if I'd have a lot of "InApp- MemAllocations" in the form of

Re: [sqlite] Is there a way to return the row number? (NOT the rowid)

Am 06.07.2013 18:58, schrieb j.merrill- There are reasons to want what is in other SQL implementations implemented with "row_number() OVER (ORDER BY ...)" but "disconnected Recordsets" or for data "passed across thread- or machine-boundaries" are definitely NOT valid reasons. Since they are

Re: [sqlite] Is there a way to return the row number? (NOT the rowid)

Am 06.07.2013 19:25, schrieb Keith Medcalf: Date: Fri, 05 Jul 2013 02:04:04 +0200 From: Olaf Schmidt <n...@vbrichclient.com> To: sqlite-users@sqlite.org Subject: Re: [sqlite] Is there a way to return the row number? (NOT the rowid) Message-ID: <kr52ig$e71$1...@ger.gmane.org>

Re: [sqlite] Is there a way to return the row number? (NOT the rowid)

Am 04.07.2013 20:36, schrieb James K. Lowden: Yes, and there's your O(N log N): N for the SCAN and log(N) for the SEARCH. To process 1,000,000 rows takes 1,000,000 accesses. To produce the rank requires roughly 20 searches per row (given an appropriate index), or 20,000,000 total accesses.

Re: [sqlite] Is there a way to return the row number? (NOT the rowid)

Am 03.07.2013 14:50, schrieb Keith Medcalf: Given all that, I will NEVER use the pure sql (if I can use any other solution). given that the "ordinal in the result set" is a fallacious concept being created for the convenience of an application > program which cannot deal with sets properly

Re: [sqlite] Large Database Windows vs Linux

Am 28.06.2013 14:54, schrieb Christopher W. Steenwyk: I have a rather large database (11 GB) that has two tables (one with approximately 500,000 rows and another with approximately 50,000,000 rows). In this database I am performing a query that joins these two tables to produce approximately

Re: [sqlite] Implementing "Save As..." functionality for Application File Format usecase

Am 03.04.2013 23:11, schrieb Tiago Rodrigues: I'm writing a small simulation app and for it I would like to use SQLite3 as an application file format, ... > ... For that, the simplest idea would be to use the online backup family of functions, calling sqlite3_backup_init() and

Re: [sqlite] Multiple network connections

Am 25.12.2012 22:18, schrieb Çağlar Orhan: But every client has MS *.hta files and connecting to sqlite over ODBC driver with vbscript. What you rely on in this case, has nothing to do with the WebServer (IIS) ... meaning the WebServer is not used as a decoupling layer (over http). What you

Re: [sqlite] Subject: Re: Simple SQLite-based spreadsheet?

Am 09.12.2012 12:40, schrieb Simon Slavin: On 9 Dec 2012, at 11:13am, Gilles Ganault wrote: OTOH, whoever writes that application could always provide two version: Basic (datagrid) and Pro (spreadsheet). If you think you can make money by providing a basic app,

Re: [sqlite] Subject: Re: Simple SQLite-based spreadsheet?

Am 08.12.2012 22:09, schrieb Gilles Ganault: Ok, but where are the large number of tools that would do that? Features: - very fast, very basic spreadsheet (not based on Excel or Libre/OpenOffice) I think you will have to be more specific with regards to "spreadsheet-like functionality".

Re: [sqlite] Remote connection to SQLite db

Am 18.10.2012 15:41, schrieb Abhinav: Does SQL lite have an option of processes connecting to it from remote hosts with a port number? There's nothing directly built-in in the sqlite-library. In case you need that for Windows (also depends on your development- environment a bit) my

Re: [sqlite] Subtract times hh:mm:ss

Am 07.10.2012 23:43, schrieb Bart Smissaert: I take it these files are not ready yet to put in a commercial app? Not yet, but in 2-3 weeks the COM-interfaces of the new added Classes (as for eaxmple the new convenience-class cMemDB) should be "stabilized" and contain their final

Re: [sqlite] Subtract times hh:mm:ss

Am 06.10.2012 19:38, schrieb Bart Smissaert: Times I get (65000 records, subtracting 2 fields defined as text in the same table) gives me following times: method with julianday 0.4 secs method with unixepoch 0.6 secs using ctime etc. via VB wrapper 1.2 secs What? A VB-implemented

Re: [sqlite] Subtract times hh:mm:ss

Am 02.10.2012 21:23, schrieb Bart Smissaert: Nice one, thanks for that. Just in case you use the COM-Wrapper - and this operation takes place in a plain Recordset-Select (and isn't stored somewhere in the DB itself, e.g. in a Trigger), then you can reduce the amount of function-calls a bit,

Re: [sqlite] Store error messages in thread local memory

Am 24.09.2012 11:26, schrieb Sebastian Krysmanski: Ok, I tried that. It definitely improves performance when using a lot threads (15+)... So I take it, that your last posted result here was using a shared cache (in case of the multiple connections):

Re: [sqlite] Store error messages in thread local memory

Am 21.09.2012 19:28, schrieb Keith Medcalf: So one needs to take care that the engine operates in the properly matching modes for the two approaches when used in threads: - shared Cache (single dbHdl over all threads) => serialized (SQLITE_THREADSAFE=1) - separate Caches (a dedicated

Re: [sqlite] Store error messages in thread local memory

Am 21.09.2012 18:03, schrieb Olaf Schmidt: ...so I can effort the independent... ...arrgh, 'afford' of course, sorry for the noise... Olaf ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite

Re: [sqlite] Store error messages in thread local memory

Am 20.09.2012 17:40, schrieb Sebastian Krysmanski: >> What's your threading mode? >> http://www.sqlite.org/threadsafe.html Serialized This could explain, why you get these performance-results, you reported before (comparing multiple connections vs. a shared one): > I tested with a

Re: [sqlite] instr function or equivalent

Am 10.09.2012 17:17, schrieb Bart Smissaert: Ah, OK. I have a feeling that needs to be done either in your application code or with a user defined SQLite function. Somebody may prove me wrong. Hi Bart, since I know you're using my COM-Wrapper, a larger set of Functions (in "VBA-Style",

Re: [sqlite] Finding rows with MIN(MTIME) for all IDs

Am 05.09.2012 16:57, schrieb Richard Hipp: On Wed, Sep 5, 2012 at 10:53 AM, Olaf Schmidt <s...@online.de> wrote: Am 05.09.2012 15:58, schrieb Igor Tandetnik: Well, you could do something like this: SELECT id, a, b, ..., mtime FROM tab t1 where mtime = (select min(mtime) from tab t2

Re: [sqlite] Finding rows with MIN(MTIME) for all IDs

Am 05.09.2012 15:58, schrieb Igor Tandetnik: Well, you could do something like this: SELECT id, a, b, ..., mtime FROM tab t1 where mtime = (select min(mtime) from tab t2 where t2.id=t1.id) ORDER BY mtime DESC; Ah, nice ... this solves the problem of the potential "non-uniqueness" of mtime...

Re: [sqlite] Using WAL?

"Sachin Gupta" schrieb im Newsbeitrag news:51b335651c9a0c4ea520d47f23a580b414f5baf...@sinnodmbx001.techmahindra.com... > Following are the setup details that we are presuming that our > application will be put through test: > > 1. One writer thread (To avoid

Re: [sqlite] SQLite server

"Doug" schrieb im Newsbeitrag news:043201cba22a$f023df40$d06b9d...@poweradmin.com... > This is where I think the problems will crop up. > Can you imagine making a > network round trip for each row fetch, and then for each > column fetch of each row (sqlite3_column_type, >

Re: [sqlite] Stored procedures

"BareFeetWare" schrieb > On 13/11/2010, at 10:33 AM, Olaf Schmidt wrote: > >> If you have code (in either environment) that is > >> looping or grabbing one result and sticking it in a > >> second query, then your approach is probably flawed. &g

Re: [sqlite] Question about SQLite features.

"Chris Wolf" schrieb [Nested Recordsets/Resultsets as an alternative to Joins, to "shape-off" redundancy in "hierarchical requests"... as a native DB-Feature usable over Sybase StoredProcs... ...and the ADO-ShapeProvider as an example for an alternative to use "these things" in a

Re: [sqlite] Stored procedures (was: Question about SQLite features.)

"BareFeetWare" schrieb > On 12/11/2010, at 6:30 AM, Olaf Schmidt wrote: > > > "jeff archer" schrieb > >> From: "Olaf Schmidt" > >> Wednesday, November 10, 2010 9:07:19 AM > >> > >>> [Stored procedures in S

Re: [sqlite] Question about SQLite features.

"Chris Wolf" schrieb > I can't resist adding my little opinion to yet another > "business logic in stored procs vs. app layer" holy war... ... yeah, seems this thread is evolving nicely in this regard ... > I usually prefer keeping the business logic in the application > layer and leaving the

Re: [sqlite] Question about SQLite features.

"Petite Abeille" schrieb > > On Nov 11, 2010, at 8:30 PM, Olaf Schmidt wrote: > > > If such an "encapsulation of business-rules" is sitting in the > > DB itself - written in a proprietary "DB-dialect", then you > > cannot call such a thin

Re: [sqlite] Question about SQLite features.

"jeff archer" schrieb >From: "Olaf Schmidt" >Wednesday, November 10, 2010 9:07:19 AM > >>[Stored procedures in SQLite] >> >>IMO stored procedure-support only makes sense in >> "Server-Instances" which run on their own... > I

Re: [sqlite] Question about SQLite features.

"Tran Van Hoc" schrieb im Newsbeitrag news:43a0ef604a674b3fb80d1447b41f8...@isbvietnam.com... [Stored procedures in SQLite] IMO stored procedure-support only makes sense in "Server-Instances" which run on their own (and communicate over different IPC-mechanisms, mainly

Re: [sqlite] New to SQLite and I have a question

"Bob Keeland" schrieb > I am new to using SQLite but think that it may be good > for a project that I'm working on. I do my programming > in Visual Basic and don't know any C\C++. > Is there any problem with connecting with SQLite from > Visual Basic? No. Though the links

Re: [sqlite] how to search for asterix character?

"Bart Smissaert" schrieb im Newsbeitrag news:aanlktikivzcbz81hqs28dtptoy8h6hc6nbukesmth...@mail.gmail.com... > > "...Where SomeColumnContent Like '%someother[*]part%' > > Thanks Olaf, that works fine. > As my customers won't get this I think I might let my > code take

Re: [sqlite] how to search for asterix character?

rs, which are equal to the "comparison- descriptors" you have to "escape them" within brackets: "...Where SomeColumnContent Like '%someother[*]part%' If the above should not work, then this would be considered a "real wrapper-bug". ;-) HTH Olaf Schmidt

Re: [sqlite] [Windows] Application to let end-users handle records?

"Gilles Ganault" <gilles.gana...@free.fr> schrieb im Newsbeitrag news:uk03v5h4ovo8un5hq68ldbotuf1fujr...@4ax.com... > On Mon, 17 May 2010 18:59:36 +0200, "Olaf Schmidt" > <s...@online.de> wrote: > >I'd say, what you're looking for (in case a "

Re: [sqlite] [Windows] Application to let end-users handle records?

dy existing schema (e.g. for visualizing in a TreeView) per: For Each Db In Cnn.Databases For Each Tbl In DB.Tables For Each Clm In Tbl.Columns '... Next Clm For Each Idx In Tbl.Indexes '... Next Idx Next Tbl Next Db Olaf Schmidt

Re: [sqlite] SQLITE3 in multi-thread server

r-based clients which work against "RPC-Servers, or Application-Servers - or let's call them *WebServers* ;-) ...over sockets (e.g. receiving JSON- serialized Resultsets over http) - ... no matter what SQL- engine is working in the backend of such a WebSite ... "clientside-controlled Serv

Re: [sqlite] Fastest concurrent read-only performance (+ threads vsprocesses) [BUG?]

"Marcus Grimm" schrieb im Newsbeitrag news:4b9a01e8.2060...@medcom-online.de... > Increasing the number of threads does affect the overall > read performance slightly, example: > 1 Thread: 11.2 sec > 16 Threads: 8.2 sec > Single Process: 11sec. > > I still would expect

Re: [sqlite] Fastest concurrent read-only performance (+ threads vsprocesses)

"Pavel Ivanov" schrieb im Newsbeitrag news:f3d9d2131003051131k23c7b61cueda0bcc72e6aa...@mail.gmail.com... Oops, pressed send unintentionally... > > Long story short - I suspect the open-call, to be the "blocker" > > in your "SharedCache-Mode=Off"-scenario. > If database

Re: [sqlite] Fastest concurrent read-only performance (+ threads vsprocesses)

ernel-space or user-space threads? Maybe this library serializes execution of your threads when processes can be parallelized over CPU cores. Pavel On Fri, Mar 5, 2010 at 2:09 PM, Olaf Schmidt <s...@online.de> wrote: > > "Luke Evans" <luk...@me.com> schrieb im Newsbei

Re: [sqlite] Fastest concurrent read-only performance (+ threads vs processes)

"Luke Evans" schrieb im Newsbeitrag news:5d6df6e4-c817-4788-a2a2-87dc5e32f...@me.com... > Thanks very much for your notes Olaf. > > I've done as you suggest... I already had SQLITE_THREADSAFE=2 > defined, but didn't have the SQLITE_OMIT_SHARED_CACHE > asserted (assuming private

Re: [sqlite] Fastest concurrent read-only performance (+ threads vs processes)

"Luke Evans" schrieb im Newsbeitrag news:3be16206-d0c6-4041-a3a6-ca3c069ee...@me.com... > It's Objective-C, but all the SQLite interfacing bits are pure C > directly driving the SQLite API compiled into the program > (3.6.22 amalgamation). Just to make sure ... do you really

Re: [sqlite] Mozilla's method

ld fail" ... Apps which also only work singlethreaded within a single process ... ...the timer-based transaction-syncing then only an "easier applicable workaround" in environments which cannot - (or don't want to) make use of the more efficient working asy

Re: [sqlite] Mozilla's method

quire some experimenting first, which timer-interval works best (depends somewhat on the frequency and size of the incoming new data-records, but also on the underlying storage-media, the DB is hosted on - be it flash-based media, as USB-sticks for example - or "real Hard-Disks"). Olaf Sc

Re: [sqlite] Mozilla's method

corruption this way - and in case of an unexpected Close of the App (due to whatever reason), you will lose only the new data which was gathered within the last timer-interval. Olaf Schmidt ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users

Re: [sqlite] Mozilla's method

leaving it at its default FULL(2)) - instead you should wrap larger insert- or update-actions within a transaction - that works fast as well. Also consider using the binding-support of the wrapper (the Command-Objects), to achieve faster (and more typesafe) operations in "write direction". O

Re: [sqlite] Mozilla's method

which "owns" the async thread. So, just in case you're using the dhRichClient3-wrapper-lib, there's currently no plan (and no time), to make that feature available in a reliable and stable working way (playing well with VB5/6) over the COM-interface. Olaf Schmidt _

Re: [sqlite] ICU collation

"Igor Tandetnik" schrieb im Newsbeitrag news:hgom0b$u0...@ger.gmane.org... Sylvain Pointeau wrote: > > How does sqlite handle ICU, I don't understand? > > is it used only for the sort order? > No, the collation is used both for sorting and for

Re: [sqlite] SQLite with HTA(vbscript) Date Format Problem

;) & " AND " & _ Format(D2, "'yy\-mm\-dd'") Or define a Const for the above shown Format-Def- Stringliteral for the second Parameter of the Format-Function. Nonetheless better to use a command-object for that task, in case your current COM-wrapper has built-in

Re: [sqlite] Convert Access sql to SQLite sql

work "out of specification", if an Update is performed inside an "Instead Of Insert" trigger, but the above steps perform really good + it can be "formalized" nicely, to construct the statements also programmatically (maybe at some "PreProcessor-level",

Re: [sqlite] Why does LIKE operator affect order of query plan?

"Tim Romano" schrieb im Newsbeitrag news:4b017343.2040...@yahoo.com... > I've added a column to my table: > > ALTER TABLE WORDS > ADD COLUMN spell varchar COLLATE NOCASE > > and have then copied the contents of a 100% pure ASCII column > into column SPELL. > > explain

Re: [sqlite] Why does LIKE operator affect order of query plan?

"Tim Romano" schrieb im Newsbeitrag news:4b0149c9.8000...@yahoo.com... > ... > My query with the LIKE operator worked instantaneously > in MS-Access, BTW, where I originally had the database. Since Access *.mdbs are often used with(in) VB- or VBA-based applications - are

Re: [sqlite] Reverse Referencing Rows

"Rick Ratchford" schrieb im Newsbeitrag news:dbfb2606d0c1448b930064474496a...@dolphin... > A while back, Igor gave me some help on pulling out mm/dd ranges (sets) from > my table. > > This is the code that does that. > > sSQL = "SELECT Date, Year, Month, Day, Open,

Re: [sqlite] SQLite server for Windows/Linux?

"David Morris" schrieb im Newsbeitrag news:26044356.p...@talk.nabble.com... > > Have a peek at : http://www.sqlitening.com/support/index.php > Different language and could run under Wine on *nix Ah - yes of course, I left it out here, since it currently is "win only"

Re: [sqlite] SQLite server for Windows/Linux?

"Gilles Ganault" schrieb im Newsbeitrag news:10h3e55s5ml6kto9rkvasvv1ejc0ao2...@4ax.com... > Maybe someone will come up with a commercial alternative. > I for one would gladly pay for a single-EXE, no-brainer solution > that can run on Windows and *nix. Hmm in this

Re: [sqlite] sqlite in-memory database far too slow in my use case

"Ron Arts" schrieb im Newsbeitrag news:4adac5c1.5010...@arts-betel.org... > Then my program opens a socket, and starts accepting connections, > those connections are long lasting, and send messages that need > a fast reply. Many of the messages result in messages being send

Re: [sqlite] INTERSECT?

"Igor Tandetnik" <itandet...@mvps.org> schrieb im Newsbeitrag news:hbfjnu$v...@ger.gmane.org... > Olaf Schmidt wrote: > > Just to add another one to the pile, any flaws I overlooked here...? > > > > select *, count(b) c_b from foo > > whe

Re: [sqlite] INTERSECT?

"Pavel Ivanov" schrieb im Newsbeitrag news:f3d9d2130910170753k6e680ecdtcb892f05b21cc...@mail.gmail.com... > > select * from foo f1 where > > (select count(*) from (select distinct b from foo f2 where f1.a = f2.a and f2.b in (...) )) = > >length_of_b_list > > and b in

Re: [sqlite] group_concat optimization

where, blowing up *total* mem-usage of a running SQLite-engine-instance by on average 25%", I'd vote for the change... ;-) Olaf Schmidt ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users

Re: [sqlite] sqlite in-memory database far too slow in my use case (new benchmark inside)

"Ron Arts" schrieb im Newsbeitrag news:4ad19195.2060...@arts-betel.org... > I tried it, and indeed, this speeds up inserts tremendously as well, > but in fact I'm not at all concernced about insert speed, but much more about > select speed. I use the following queries: > >

Re: [sqlite] sqlite in-memory database far too slow in my use case (new benchmark inside)

ossible, after your "main-amount" of fillups was done - that adds some additional time to your overall-data-preparation efforts of your "table-list" - but will be of benefit for your single-record-lookups, based on your "... Where ID = ? ". Olaf Schmidt

Re: [sqlite] FTS and postfix search

"Hugh Sasse" schrieb im Newsbeitrag news:alpine.lfd.2.00.0908061712390.30...@trueman.cs.cse.dmu.ac.uk... > I wonder if the idea of suffix arrays would belp. > http://www.cs.dartmouth.edu/~doug/sarray/ I was about suggesting basically the same thing... In case of Lukas'

Re: [sqlite] Date Cutoff Statement

such interface-spec exists, would it be possible to design such a thing (at least "roughly", by an sqlite-expert) and publish it here or on the sqlite-site, before I start working on that, or do you say: "just be creative!". Any input on that is appreciate

Re: [sqlite] Date Comparisons SQL

"Rich Shepard" schrieb im Newsbeitrag news:alpine.lnx.2.00.0908031516300.3...@salmo.appl-ecosys.com... > > It was set as String actually. > > Rick, > >That's the storage class; well, TEXT is the storage class. Yep. > > I believe this is a WRAPPER thing though.

Re: [sqlite] Sqlite from ASP?

"Paul Claessen" schrieb im Newsbeitrag news:005601ca0d3f$af8748e0$0e95da...@com... > Does anyone have any (simple) examples on how > to use sqlite from .ASP scripts for me? Since you have CreateObject() available in these scripts, any COM-based SQLite wrapper should do...

Re: [sqlite] [Columns] Keeping internal + beautified names?

"Gilles Ganault" schrieb im Newsbeitrag news:0sap559atknanmiv8g83pdj6f83e8ve...@4ax.com... > On Sat, 11 Jul 2009 09:38:27 -0700, Jim Dodgen > wrote: > >I would just use: > > > >SELECT id AS Identification FROM foobar > > Thanks. This is what I already use

Re: [sqlite] Is it Possible in SQL...

"Rick Ratchford" schrieb im Newsbeitrag news:152a3111f1ab4a9891b9158580cb7...@dolphin... > Maybe I misunderstood, but the impression I got was > that I should solve this problem using my VB language > rather than dealing with the DB. I don't understand Simons reply

Re: [sqlite] Is it Possible in SQL...

"Rick Ratchford" schrieb im Newsbeitrag news:c9ce387e92004e7b9c16ddaa2bd36...@dolphin... > So modifying TmpTable, which will still be needed for > other procedures, is not preferred. It would be great if > a recordset could be derived from it instead that contains >

Re: [sqlite] Pros and cons of various online code sharing sites

sil-interface-wrapper, released under GPL - if that is of any help - but as I see it - that would shift the GPL/LGPL "interfacing-issues" only one layer "away"). Olaf Schmidt ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users

Re: [sqlite] Question about searches

"Christophe Leske" schrieb im Newsbeitrag news:4a37b811.4030...@multimedial.de... >> You write your own comparison function that would consider >> these two strings equal. See sqlite3_create_function, >> sqlite3_create_collation. > > this problem pertains not only to

Re: [sqlite] SPHiveDB: A server for sqlite database.

"lau stephen" <stephen@gmail.com> schrieb im Newsbeitrag news:c26a05160906150443h44b8f434s46e6ab4215f61...@mail.gmail.com... 2009/6/14 Olaf Schmidt <s...@online.de>: >> Each client could do (with a 1:10 relation of writes and reads) >> >> Loop 1000

Re: [sqlite] SPHiveDB: A server for sqlite database.

"Olaf Schmidt" <s...@online.de> schrieb im Newsbeitrag news:h131eu$m0...@ger.gmane.org... > Loop 1000 times > With LoopCounter Modulo 7 (case-switch) > ... > ... > Ending up with 11 new records in the DB Ok - make the loop-counter 7000 to reach the

Re: [sqlite] SPHiveDB: A server for sqlite database.

"stephen liu" schrieb im Newsbeitrag news:e5a33d590906140609h4f3f35fah9083be3560f5d...@mail.gmail.com... http://code.google.com/p/sphivedb/ > SPHiveDB is a server for sqlite database. It use JSON-RPC over > HTTP to expose a network interface to use SQLite database. > It

Re: [sqlite] Slow Transaction Speed?

ur mentioned, which was interesting to read. Also interesting with regards to current ext3-behaviour was the following one: Kernel developers squabble over Ext3 and Ext4 http://www.heise.de/english/newsticker/news/135446 And finally some new default-ext3-settings in the new kernel? Solving the e

Re: [sqlite] Re-try logic on SQLITE_BUSY/deadlocked?

schrieb im Newsbeitrag news:634ea812687a6d75a1ddf17adce883fc.squir...@webmail.ipac.caltech.edu... > >> My primary concern now is to prevent a dead-lock. > > That seems to make sense now (I assume you're working > > "near a deadlock" with your multipe-client-requests,

Re: [sqlite] Re-try logic on SQLITE_BUSY/deadlocked?

"Rosemary Alles" schrieb im Newsbeitrag news:57c55bd7-8d56-4913-adce-cbb2978dd...@ipac.caltech.edu... > > What do you mean with "cores"? > > Are these multiple client *machines* - or do we talk about > > a sinlge client-machine with multiple (cpu-)cores here? > >

Re: [sqlite] Re-try logic on SQLITE_BUSY/deadlocked?

e)? And could you please check the DB-Size before and after such a typical "update-job" (so that we get an impression about the transferred byte-volume - maybe you could also give the count of new records in case of insert-jobs)? And do you work over GBit-Ethernet (or an even faster "NFS-

Re: [sqlite] Optimizing concurrency with sql query - locks?

s good enough in these typical, more ReadDirection-related-scenarios - the currently implemented locking-scheme seems not all that restrictive (if working against non-shared SQLite-caches) - so I hope, the sqlite-devs (although they often recommend, to work singlethreaded wherever possible ) keep up

Re: [sqlite] Sporadic freezes of sqlite

ring). Do you see any chance (since all writes are already "centralized" if one uses the new async-writer-approach), that in case of a running "granular-backup" we could avoid our planned "workaround"? In either case - that will be a nice addition to the engine - t

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