On 11 Apr 2011, at 3:59am, Guilherme wrote:
> Well, I thought that if the execution followed a plan.. I could get for
> example, the cardinality from the results until a point, say a join.
> Imagine a query with 15 joins.. the execution would make a join, than, with
> the results from this join,
Guilherme wrote:
> Well, I thought that if the execution followed a plan.. I could get for
> example, the cardinality from the results until a point, say a join.
I don't see how the conclusion follows from the premise. Why does "follows
execution plan" have to imply "provides ready access to the
Guilherme wrote:
> I believed that databases in general evaluate their queries, following a
> execution plan...
> e.g. first do a table scan and apply a filter from the where clause.. than
> use the results to execute a join with other table.. than use the results to
> excute with another join..
>
Hi!
I believed that databases in general evaluate their queries, following a
execution plan...
e.g. first do a table scan and apply a filter from the where clause.. than
use the results to execute a join with other table.. than use the results to
excute with another join..
but now, from what I've
Apparently you're writing to the sqlite-users mailing list but don't
read all answers that people give writing to the same mailing list -
people usually do not reply to you directly and I'd appreciate if you
didn't reply to me directly too. Write to the list and read from the
list.
Pavel
On Thu,
What's wrong with the link already given you in another thread?
http://www.sqlite.org/backup.html
Also see http://www.sqlite.org/c3ref/backup_finish.html.
Pavel
On Thu, Jan 28, 2010 at 9:43 AM, Trapper Schuler
wrote:
> Hello,
>
> Is there a SQLite function that can "copy" one database to anothe
Hello,
Is there a SQLite function that can "copy" one database to another
(programmatically)?
I would imagine that there would be a function that could take a "From"
handle and a "To" handle that could copy an entire database.
A "duplicate" function should work for me as well if there is no "cop
On Wed, 27 Jan 2010 23:20:01 -0500, Trapper Schuler
wrote:
>Hello,
>
>I am new to SQLite, but have experience with other database management
>systems. Performance is very critical in my application, but the data
>is getting too large to keep in memory. My application is not just a
>database
Trapper Schuler wrote:
> If I use a "Temporary Database" or an "In-Memory Database", is there an
> easy way to take that database and write it to disk
http://www.sqlite.org/backup.html
Igor Tandetnik
___
sqlite-users mailing list
sqlite-users@sqlite.or
I can't see all your requirements for this database but I believe
you'd better not use temporary or in-memory databases. You'd better
use regular database but use all kinds of tricks to speed up work with
it (like "pragma synchronous off", "pragma journal_mode off", in some
cases some tricks can be
Hello,
I am new to SQLite, but have experience with other database management
systems. Performance is very critical in my application, but the data
is getting too large to keep in memory. My application is not just a
database front end. The database is just a part of the overall application.
On Tue, 27 Oct 2009, Ken wrote:
> To: General Discussion of SQLite Database
> From: Ken
> Subject: Re: [sqlite] SQLite: question
>
>
> Sql uses a single quote or a tick mark to delimit strings.
> C, C++ and other languages use Dobule quote to delimit
> strings.
>
ipp
> Subject: Re: [sqlite] SQLite: question
> To: "General Discussion of SQLite Database"
> Cc: "Sergiu _"
> Date: Tuesday, October 27, 2009, 7:56 AM
> Question forwarded to the
> sqlite-users mailing list.
>
> Quick answer: String are quoted in SQL using si
Question forwarded to the sqlite-users mailing list.
Quick answer: String are quoted in SQL using single quotes, not
double-quotes. What you are seeing is not a bug. You are misusing
the string quoting mechanism.
On Oct 27, 2009, at 8:51 AM, Sergiu _ wrote:
> Hello,
>
> I use SQLite in on
On Tue, Feb 24, 2009 at 7:44 AM, Yuzem wrote:
>
>
>
> P Kishor-3 wrote:
>> Google for "normalizing a database" and then read up on it. It will help.
>>
>
> Ok, thanks, thats the solution. Now there is another problem that arise.
> Lets say I have a table called movies with 3 columns (id, titles, k
P Kishor-3 wrote:
> Google for "normalizing a database" and then read up on it. It will help.
>
Ok, thanks, thats the solution. Now there is another problem that arise.
Lets say I have a table called movies with 3 columns (id, titles, keywords):
1|title1|keyword1
1|title1|keyword2
1|title1|k
On Mon, Feb 23, 2009 at 5:15 AM, Yuzem wrote:
>
> Thanks for the answer.
>
> Igor Tandetnik wrote:
>> This monstrosity gives the correct answer in your specific example, but
>> it relies on there being exactly two tags per folder.
> It can be any number of tags per folder.
>
> Igor Tandetnik wrote
Thanks for the answer.
Igor Tandetnik wrote:
> This monstrosity gives the correct answer in your specific example, but
> it relies on there being exactly two tags per folder.
It can be any number of tags per folder.
Igor Tandetnik wrote:
>
> Consider normalizing your database. Split into two t
"Yuzem" wrote in
message news:22153722.p...@talk.nabble.com
> Suppose that have 2 columns: folders and tags:
> ~/Music|classic,rock
> ~/Music|classic,rock
> ~/Pictures|art,photos
> ~/Pictures|art,photos
> ~/Pictures|art,photos
>
> To know the folder count I do:
> sqlite3 test.db "select folder, c
Suppose that have 2 columns: folders and tags:
~/Music|classic,rock
~/Music|classic,rock
~/Pictures|art,photos
~/Pictures|art,photos
~/Pictures|art,photos
To know the folder count I do:
sqlite3 test.db "select folder, count(folders) from t1 group by folder"
Returns:
~/Music|2
~/Pictures|3
How
On Thu, Apr 10, 2008 at 09:56:31PM -0500, Dewey Gaedcke scratched on the wall:
> Set @a = 0;
> Select T1.rownumber, T1.Col2 from
> (
> Select @a:[EMAIL PROTECTED] as rownumber, Col1, Col2
> from Table where Col1 = 'abc' Order by Col1
> ) as T1
> Where T1.rownumber between 2
Dennis,
Thanks for the info/link.if we must go this route
(http://www.sqlite.org/cvstrac/wiki?p=ScrollingCursor), we will, but I'd
much rather pay someone to write a simple embedded "sequence" function for
us because we've got almost 10 (very complex) queries in mySQL that use the
example in my
Dewey Gaedcke wrote:
>
> For example, if my query returns 80 rows, I'd like an extra column holding
> sequential values 1 to 80 to help with paging
>
Check out this information page
http://www.sqlite.org/cvstrac/wiki?p=ScrollingCursor
It explains how to do paging efficiently in SQLite.
HTH
De
Hello,
I hope this is the right place to get sqlite help.
I'm trying to figure out how to generate a relative row # in a sqlite query
result>(in native SQL if possible---I'm not a C++ guy).
For example, if my query returns 80 rows, I'd like an extra column holding
sequential values 1 to 80 to
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