like vs =

Hallo,
I just encountered a stange behaviour:

The following query gives zero rows.

bitoek=> SELECT name from file where name =
'mitarbeiter/mit/mitarbeiter_ehemalig.php';
name
------
(0 Zeilen)

Replacing "=" by like and escaping the underscore gives the row I knew
to be there:

bitoek=> SELECT name from file where name like
'mitarbeiter/mit/mitarbeiter\_ehemalig.php';
name
------------------------------------------
mitarbeiter/mit/mitarbeiter_ehemalig.php
(1 Zeile)

Other queries with the equal operator do match rows. Am I missing something?

Postgresql: 8.1.1
Fieldtype: text
Database encoding: Latin9

Regards,

Stefan

--
-----------------------------
Dr. Stefan Holzheu
Tel.: 0921/55-5720
Fax.: 0921/55-5709
BayCEER
EDV und Datenbanken
Universitaet Bayreuth
D-95440 Bayreuth
-----------------------------