The following bug has been logged online:

Bug reference: 2127
Logged by: Kyril Alyoshin
Email address: kyrill (AT) technolog (DOT) ca
PostgreSQL version: 8.0.3
Operating system: Windows XP
Description: Regular Expression Limits Do Not Work
Details:

I am writing a regex to verify US zipcodes. The expression is very simple,
in a trigger function it looks like this:

IF (NEW.postal_code_name !~ '\\d{5}')
THEN
RAISE EXCEPTION 'error';
END IF;

The bug description is:

If postal_code_name is > 5 digits, the expression would still evaluate to
false, and the error will not be raised.

Please correct this.

Thank you.

Kyrill

---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match

"Kyril Alyoshin" <kyrill (AT) technolog (DOT) ca> writes:
Please learn how to use regular expressions ;-)

You probably want '^\\d{5}$' instead, to require the regex to match the
whole string instead of just any part of it.

regards, tom lane

---------------------------(end of broadcast)---------------------------
TIP 3: Have you checked our extensive FAQ?

http://www.postgresql.org/docs/faq