On Mon, Apr 23, 2007 at 09:26:53AM -0400, Stephen Oberholtzer wrote:
On 4/22/07, Gilles Roy <[EMAIL PROTECTED]> wrote:
Given a arbitrary statement, I need to find out which row a specific
result is in, as efficiently as possible. The arbitrary statement can
order the results any way it wants.
On 4/23/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
(drh makes a mental note to improve the formatting of
the contributed code section. The original table format
seems a bit cluttered...)
As long as you may be making a change, may I request a feature if it's not
too much trouble? It
Arjen,
Thank you for attentive maintenance and development on this valuable
interface.
On 4/23/07, Arjen Markus <[EMAIL PROTECTED]> wrote:
Liam Healy wrote:
> Arjen,
>
> I've taken another look at these bindings, and at my project. For a
> variety
> of reasons, most not related to the
Marco Bambini wrote:
Database is uniformly distributed, I created it ad hoc just for my
test (sqlite 3.3.12):
Marco,
Another way to think of this is that if your database contained random
numbers in the range 1-100 for both a and b, then an index on either of
those values would allow
Marco Bambini wrote:
I know that I can use the ANALYZE command or that I can index both
columns.
I was making some tests and I found that with one index the query is
slower that without any index, so I just trying to understand the
reason... I do not want to run it faster, I already know that
At 21:14 23/04/2007 +0100, Martin Jenkins wrote:
pysqlite implements Python's DBAPI and was integrated into Python. There
is another wrapper, APSW, which is thinner and closer to SQLite's C API.
Choose whichever you feel most comfortable with.
If you choose pysqlite be aware that it will
I know that I can use the ANALYZE command or that I can index both
columns.
I was making some tests and I found that with one index the query is
slower that without any index, so I just trying to understand the
reason... I do not want to run it faster, I already know that it is
possible.
Thanks for the input and confirming my analysis. I am implementing a
remote procedure call capability and keep a library of SQL transactions
to be executed by a remote client.
Dennis Cote wrote:
John Stanton wrote:
I am not sure how to proceed with handling multiple SQL statements.
Perhaps
Gilles Ganault wrote:
At 14:40 23/04/2007 +0200, Stef Mientki wrote:
I've no experience whatsover, but if I see the list, the top one is
the best choice, because it'll be integrated in the standard Python.
Thanks. I didn't know SQLite was part of Python 2.5.
pysqlite implements Python's
Thanks Igor, much obliged. That fits my application quite elegantly.
Igor Tandetnik wrote:
John Stanton <[EMAIL PROTECTED]> wrote:
I want to store multi-statement SQL to implement an entire transaction
in the form -
BEGIN
statement
statement
...
COMMIT
I can see that
Marco Bambini <[EMAIL PROTECTED]> wrote:
> Yes, I know that it is faster ... I just wonder why with one index
> the query is slower that without any index...
Probably because most of the entries in your table
match the term being indexed. In your case, this
likely means that a large fraction
Marco Bambini wrote:
As a performance test I created a db with 300,000 records, table is:
CREATE TABLE table1 (a INTEGER, b INTEGER)
a query like:
SELECT * FROM table1 WHERE a=5 AND b=11;
takes 0.281 secs.
if I add two indexes:
CREATE INDEX index1 ON table1(a);
CREATE INDEX index2 ON
John Stanton wrote:
I am not sure how to proceed with handling multiple SQL statements.
Perhaps someone has some experiences they would be kind enough to share.
I want to store multi-statement SQL to implement an entire transaction
in the form -
BEGIN
statement
statement
John Stanton <[EMAIL PROTECTED]> wrote:
I want to store multi-statement SQL to implement an entire transaction
in the form -
BEGIN
statement
statement
...
COMMIT
I can see that sqlite3_prepare has the capability of stepping through
a multi statement string but it looks
Yes, I know that it is faster ... I just wonder why with one index
the query is slower that without any index...
---
Marco Bambini
On Apr 23, 2007, at 6:31 PM, P Kishor wrote:
On 4/23/07, Marco Bambini <[EMAIL PROTECTED]> wrote:
As a performance test I created a db with 300,000 records,
At 14:40 23/04/2007 +0200, Stef Mientki wrote:
I've no experience whatsover, but if I see the list, the top one is the
best choice, because it'll be integrated in the standard Python.
Thanks. I didn't know SQLite was part of Python 2.5.
I am not sure how to proceed with handling multiple SQL statements.
Perhaps someone has some experiences they would be kind enough to share.
I want to store multi-statement SQL to implement an entire transaction
in the form -
BEGIN
statement
statement
...
COMMIT
I can
Stephen Oberholtzer wrote:
What's the best way to submit patches for SQLite? I looked around on
the website and didn't find anything relevant; Google wasn't much help
because all I got were pages for *other* projects that used SQLite to
maintain their patch databases.
Stephen,
See the
"Stephen Oberholtzer" <[EMAIL PROTECTED]> wrote:
> What's the best way to submit patches for SQLite? I looked around on
> the website and didn't find anything relevant; Google wasn't much help
> because all I got were pages for *other* projects that used SQLite to
> maintain their patch
Hi Roy,
If your statement "X" is represented below by "select ... Order by ..."
Then would the following give you what you're looking for??
create temp table Xtab as (select Order by );
select ROWID from xTab where MemberID=4567373;
(Without some "order by" clause, by the
What's the best way to submit patches for SQLite? I looked around on
the website and didn't find anything relevant; Google wasn't much help
because all I got were pages for *other* projects that used SQLite to
maintain their patch databases.
--
-- Stevie-O
Real programmers use COPY CON
On 4/23/07, Marco Bambini <[EMAIL PROTECTED]> wrote:
As a performance test I created a db with 300,000 records, table is:
CREATE TABLE table1 (a INTEGER, b INTEGER)
a query like:
SELECT * FROM table1 WHERE a=5 AND b=11;
takes 0.281 secs.
if I add two indexes:
CREATE INDEX index1 ON table1(a);
You don't have to read into a memory array. How about just running
through your selection with an sqlite3_step and counting the rows?
Gilles Roy wrote:
On Sun, Apr 22, 2007 at 05:33:43PM -0500, P Kishor wrote:
On 4/22/07, Gilles Roy <[EMAIL PROTECTED]> wrote:
Given a arbitrary statement,
As a performance test I created a db with 300,000 records, table is:
CREATE TABLE table1 (a INTEGER, b INTEGER)
a query like:
SELECT * FROM table1 WHERE a=5 AND b=11;
takes 0.281 secs.
if I add two indexes:
CREATE INDEX index1 ON table1(a);
CREATE INDEX index2 ON table1(b);
the same query is
Thank you! It work's fine..
Sylko
-Ursprüngliche Nachricht-
Von: Stephen Oberholtzer [mailto:[EMAIL PROTECTED]
Gesendet: Montag, 23. April 2007 15:42
An: sqlite-users@sqlite.org
Betreff: Re: [sqlite] INSTEAD OF Trigger Question
On 4/23/07, Sylko Zschiedrich <[EMAIL PROTECTED]> wrote:
>
On 4/23/07, Sylko Zschiedrich <[EMAIL PROTECTED]> wrote:
Hi all,
i have a question to "instead of triggers" on views.
Following schema:
h>
That's my current implementation. But with this I can't update the View
to 'null' values because the coalesce statement will return the
old.values.
On 4/22/07, Gilles Roy <[EMAIL PROTECTED]> wrote:
Given a arbitrary statement, I need to find out which row a specific
result is in, as efficiently as possible. The arbitrary statement can
order the results any way it wants.
Let's say your resultset consists of 3 columns: memberid, lastname,
Gilles Ganault wrote:
Hello
I browsed through the archives at Gname, but most threads regarding
wrappers for Python date back to 2005.
There are several wrappers listed in the wiki
(http://www.sqlite.org/cvstrac/wiki?p=SqliteWrappers), so I'd like
some feedback about which you would
Hello
I browsed through the archives at Gname, but most threads regarding
wrappers for Python date back to 2005.
There are several wrappers listed in the wiki
(http://www.sqlite.org/cvstrac/wiki?p=SqliteWrappers), so I'd like some
feedback about which you would recommend to use SQLite from
> You could do this:
>
> SELECT COUNT(*) from X where memberid < 4567373
That assumes that you are sorting by memberid, of course...
Hugh
-
To unsubscribe, send email to [EMAIL PROTECTED]
> That is what I want to do. I want to know where the memberid is in
> the list (imagine the list was a waiting list or something). Is there
> not a way to just get the row number back? Is seems inefficient to
> have to allocate all of the memory to hold all of the results and
> then iterate
Hi all,
i have a question to "instead of triggers" on views.
Following schema:
-- View --
CREATE VIEW DepartmentHasApp as
select
UID_Application as UID_Application,
UID_Org as UID_Department,
Hi All,
Could somebody please answer my questions?
- Does sqlite work with hugetlbpage
(http://lxr.linux.no/source/Documentation/vm/hugetlbpage.txt) feature on linux?
- If not, is anybody working on this?
Thanks in advance,
Prasanth.
__
Do You
Liam Healy wrote:
Arjen,
I've taken another look at these bindings, and at my project. For a
variety
of reasons, most not related to the sqlite3 Fortran bindings, I have
decided
to proceed in a different direction. However, on closer examination
of the
Fortran bindings and other language
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