On 10/12/2007, Ed Pasma <[EMAIL PROTECTED]> wrote:
> Hello, think I got it, but it is disappointingly simple, see below. Ed.
>
> Markus Gritsch wrote:
>
> > Even more strange:
> >
> > c.execute("""SELECT * FROM entry, word, word_entry WHERE
&
On 09/12/2007, Markus Gritsch <[EMAIL PROTECTED]> wrote:
> On 09/12/2007, D. Richard Hipp <[EMAIL PROTECTED]> wrote:
> >
> > SQLite will optimize a GLOB where the right parameter is
> > a literal string. It will not do so if the right parameter is a
>
On 09/12/2007, Mag. Wilhelm Braun <[EMAIL PROTECTED]> wrote:
> hi Markus,
Hi Wilhelm
> I just tried for fun:
>
> start = time.time()
> SQLString=('''SELECT * FROM entry, word, word_entry WHERE
> entry.id = word_entry.entry_id AND
> word.id = word_entry.word_id AND
> word.word GLOB '%s'
> ''' %
On 09/12/2007, D. Richard Hipp <[EMAIL PROTECTED]> wrote:
>
> On Dec 9, 2007, at 5:27 AM, Kees Nuyt wrote:
>
> > Problematic SELECT:
> >> c.execute("""SELECT * FROM entry, word, word_entry WHERE
> >> entry.id = word_entry.entry_id AND
> >> word.id = word_entry.word_id AND
> >> word.word GLOB ?
>
On 09/12/2007, Kees Nuyt <[EMAIL PROTECTED]> wrote:
> On Sun, 9 Dec 2007 10:55:16 +0100, "Markus Gritsch"
> <[EMAIL PROTECTED]> wrote:
>
> >Hi,
> >
> >when using bind variables I get a huge performace drop compared to
> >using a plain
Hi,
when using bind variables I get a huge performace drop compared to
using a plain string. The query is demonstrated in the attached file
"problematic_query.py".
The database used can be downloaded from
http://xile.org/le/prepared_statement.zip (1.75 MB)
or generated by using the attached f
Kurt Welgehausen wrote:
... LIKE 'ba_foo\_png' but this does not seem to work.
The escape mechanism for LIKE has never been implemented in
SQLite. The work-around is to use GLOB if your pattern
contains '_' or '%' (unfortunately, GLOB is not std SQL).
In case you're curious, the std SQL syntax is
Hi!
Say I want to match 'barfoo' and 'bazfoo', I can use
LIKE 'ba_foo'
If I want to match 'barfoo_png' and 'bazfoo_png', but not 'barfooxpng',
I have to escape the underscore before png. I tried
LIKE 'ba_foo\_png'
but this does not seem to work.
Is there a proper solution?
Markus
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