Markus wrote:
>
> The following bug has been logged online:
>
> Bug reference: 5478
> Logged by: Markus
> Email address: markus.herven@outpost24.com
> PostgreSQL version: PostgreSQL 8.4.
> Operating system: Ubuntu 10.04
> Description: ILIKE operator returns wrong result
> Details:
>
> The following query
>
> select 'ba' ilike '%__%';
>
> return true as expected in 8.2 but false in 8.4.
I can confirm the odd behavior in current CVS:
test=> select 'ba' ilike '%__%';
?column?
----------
f
(1 row)
test=> select 'ba' like '__';
?column?
----------
t
(1 row)
test=> select 'ba' like '__%';
?column?
----------
t
(1 row)
test=> select 'ba' like '%_%';
?column?
----------
t
(1 row)
It seems to be the leading '%' it does not like. Our docs clearly state
your syntax is recommended:
LIKE pattern matching always covers the entire string. Therefore, to
match a sequence anywhere within a string, the pattern must start and
end with a percent sign.
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
