I think you need to use a LEFT JOIN in your SQL
statement. I'm not sure how well PostgreSQL supports
JOINs, but the following might work:
select tablea.banid, tablea.flags, tableb.banid from
tablea left join tableb on tablea.banid = tableb.banid
where tableb.banid = null and tablea.flags not like
'%v%';
--- Randy Jonasz <rjonasz@click2net.com> wrote:
>
> Hi everyone,
>
> I have a quick question. If anyone could help me
> that would be great. I
> have two tables in postgres.
>
> table a
> banid int4 primary key,
> flags varchar(64)
>
>
> table b
> banid int4 foreign key
> validate int4
>
>
> What SQL statement would allow me to search for
> records in table a which
> are not in table b. The additional constraint is
> that I only want records
> from table a which do not have 'v' in the flags
> column.
>
> Here's an example SQL statement I've been using but
> I'm thinking it is
> flawed.
>
> SELECT distinct a.banid FROM a,b WHERE a.banid !=
> b.banid AND a.flags NOT
> LIKE '%v%';
>
> Any help would be most welcome!
>
> Randy Jonasz
> Software Engineer
> Click2net Inc.
> Web: http://www.click2net.com
> Phone: (905) 271-3550
>
> "You cannot possibly pay a philosopher what he's
> worth,
> but try your best" -- Aristotle
>
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