joe@tsolucio.com (Joe Bordes) writes:
> I have a table which contains a field with regular expressions. I want
> to test a given string against this field to obtain the resulting
> records but I am doing something wrong and cannot find out what.
> select os_name from table where 'windows9x' ~ os_regexp;
> ERROR: invalid regular expression: empty expression or subexpression.
Looks to me like there's at least one row in the table whose os_regexp
is wrong. I'm not quite sure *why* it's wrong ... I tried a few
examples to see if I could duplicate that message, and I couldn't find
one. But you want to look to the regexps themselves, the query is fine.
regards, tom lane