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* find sudstring on text (data type) field failure
@ 2012-11-07 08:36 pantelis vlachos <vlachos83@gmail.com>
0 siblings, 2 replies; 3+ messages in thread
From: pantelis vlachos @ 2012-11-07 08:36 UTC (permalink / raw)
To: pgsql-sql
I was trying to find a substring on a text (data type) column like 'cat foo
dog ...'.
I use the query below
SELECT id FROM table WHERE name LIKE '% foo %';
Sometimes the query return with nTuples=0 but there are matching rows.
On retry, the query return with expected results. Any ideas;
(postgres ver 9.2, libpq - C Library)
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: find sudstring on text (data type) field failure
@ 2012-11-11 10:24 Craig Ringer <craig@2ndQuadrant.com>
parent: pantelis vlachos <vlachos83@gmail.com>
1 sibling, 0 replies; 3+ messages in thread
From: Craig Ringer @ 2012-11-11 10:24 UTC (permalink / raw)
To: pantelis vlachos <vlachos83@gmail.com>; +Cc: pgsql-sql
On 11/07/2012 04:36 PM, pantelis vlachos wrote:
> I was trying to find a substring on a text (data type) column like
> 'cat foo dog ...'.
> I use the query below
> SELECT id FROM table WHERE name LIKE '% foo %';
> Sometimes the query return with nTuples=0 but there are matching rows.
> On retry, the query return with expected results. Any ideas;
>
> (postgres ver 9.2, libpq - C Library)
Nowhere near enough information. I'd say you have concurrency issues; at
the time you ran the query there weren't actually matching rows. See if
you can put together a test case that demonstrates the issue, or follow
up with a lot more detail.
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: find sudstring on text (data type) field failure
@ 2012-11-12 07:52 Achilleas Mantzios <achill@smadev.internal.net>
parent: pantelis vlachos <vlachos83@gmail.com>
1 sibling, 0 replies; 3+ messages in thread
From: Achilleas Mantzios @ 2012-11-12 07:52 UTC (permalink / raw)
To: pgsql-sql
Gia sou Panteli,
are you suggesting that the results are incinsistent and unpredictable with every run?
pls present a case demontsrating the problem.
On Τετ 07 Νοε 2012 10:36:34 pantelis vlachos wrote:
I was trying to find a substring on a text (data type) column like 'cat foo dog ...'.
I use the query below
SELECT id FROM table WHERE name LIKE '% foo %';
Sometimes the query return with nTuples=0 but there are matching rows.
On retry, the query return with expected results. Any ideas;
(postgres ver 9.2, libpq - C Library)
-
Achilleas Mantzios
IT DEPT
^ permalink raw reply [nested|flat] 3+ messages in thread
end of thread, other threads:[~2012-11-12 07:52 UTC | newest]
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2012-11-07 08:36 find sudstring on text (data type) field failure pantelis vlachos <vlachos83@gmail.com>
2012-11-11 10:24 ` Craig Ringer <craig@2ndQuadrant.com>
2012-11-12 07:52 ` Achilleas Mantzios <achill@smadev.internal.net>
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