pg7.3.4: pg_atoi: zero-length string

Hi,

We're currently experiencing a problem where SQL statements are failing 
when entring a '' for not not-null integer columns:

ERROR:  pg_atoi: zero-length string

This was discovered just after a database migration from 7.2 to 7.3.4.

Example:

insert into renewal_cache
                 (dom, expiry, issued, aid) values
                 ('data','2004-03-05','19980305','')

The above example in just one case where 'aid' can accept a null value. 
The use of quotes around all values was established as IIRC pg7.2 
wouldn't accept statements without them. The use of this convention is 
extensive.

Cheers,

Rob Fielding
Development
Designer Servers Ltd