On Nov 14, 2005, at 2:07 PM, Steve Wampler wrote:
# SELECT at.id FROM "tmp_table2" at, "tmp_tabl2e" a # WHERE at.id=a.id and a.name='obsid' and a.value='oid080505';
Isn't this equivalent? select id from tmp_table2 where name = 'obsid' and value = 'oid080505';
# DELETE FROM "tmp_table2" WHERE id IN # (SELECT at.id FROM "tmp_table2" at, "tmp_table2" a # WHERE at.id=a.id and a.name='obsid' and a.value='oid080505');
and this? delete from tmp_table2 where name = 'obsid' and value = 'oid080505'; Why are you doing a self-join using id, which I assume is a primary key? -- Scott Lamb <http://www.slamb.org/> ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
