Ouch, brain cramp, make that...
LEFT JOIN table2 ON table1.id=table2.table1_id
WHERE table2.table1_id IS NULL;
> Hi there,
> I just discovered, that I do have some old rows I do not need anymore.
> A result from forgeting to empty the table before starting to go into
> production :-)
> However, I do try to find the rows which are not asociated with
> another table in order to delete them.
> I have 2 tables:
> table1 and table2
> table1 has the key: "ID"
> table2 has the subkey "table1_id"
> Now I would like to delete all rows in table1 which are not listed in
> table2 with an id.
> I tried:
> table1 as t1,
> table2 as t2
> t1.ID != t2.table1_id
> But this returns hundreds of thousends of results.
> I also tryed to group by t1.ID, but it did not help
> Does anybody have a good idea how to get rid of those rows?
> Thanx, Merlin
> PS: Thanx for the answer for the question with full text search! That
> worked excellent!
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.344 / Virus Database: 267.11.9/118 - Release Date: 10/3/2005