Question:
I have a problem comparing columns from different tables. I tried:
SELECT tblThumBereinigt.Nummer, dbo_BABEWERTUNG.BANUMMERFROM dbo_BABEWERTUNG, tblThumBereinigtWHERE (((dbo_BABEWERTUNG.BANUMMER)<>[tblThumBereinigt].[Nummer]));
but this does not give me what I want. How can I compare different tables with an exclusive condition?
Answer:
Try this:
select * from information_schema.columns
That should give you a list of information about the columns in your database.
As a matter of form, though, doing the not-equals comparison here matches every row from the left-hand table to every row of the right-hand table, because each instance of number will NOT EQUAL any other, so you’ll wind up with a giant cross-join instead.
