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Hello! The one example with the sub selects does not work. I suppose it's because MySQL does not support any sub selects. But the other two examples work really great! :) I think I will use the last example you posted. It is the easiest one to extend. I will have to look into this...

Hey it's me again... as I already said, the only version which works is the first one posted by carp. Now I've got another problem... How can I easily extend the select thingy? Let's say now I want all the ID2's which have ID1=1 ID1=2 ID1=3 in common? or in other words ID1=1 ... ID1=n ? I...

Alright... ...now i understand HOW it works. and finally i got the first example shown by carp run successfully. if i use yours which is quite similar but also different to that one i receive an error "1064"? I'd like to know what is wrong with it?! For a better understanding of the...

Somehow my last answer was not sent properly. Anyways i use "MySQL" and the result of this SELECT will be used in "PHP". I am pretty new to SQL and I guess that is the reason for my probs. :) I thought those other two suggestions would use two tables instead of one. I guess...

Hi! Well I use MySQL. The result of the whole "SELECT" thingy will be used in PHP. You say that the suggested solutions refer to ONE table. Then I must have misunderstood them. As i already said I am quite new to SQL, so maybe you could try to explain it to me once again. I hope there...

Hello everybody! This approach: SELECT id2 FROM myTable WHERE id1 = 1 INTERSECT SELECT id2 FROM myTable WHERE id1=2; caused an error. Maybe I should say that I use MySQL ? I am kinda new to this SQL-stuff... Besides this: I only have ONE table with those two fields ID1 and ID2. TIA. If you...

Hmmm... wouldn't that be the same as this: SELECT * FROM MyTable WHERE ID1 = '1' OR ID1 = '3' ? Because both (your version and mine) do not give me the desired result :-( But maybe i got you somehow wrong. Untill now I never heared of that "in" command. TIA! Oliver

Hey yall. I've got a table which looks like this: ID1 ID2 1 1 1 2 1 3 2 1 2 3 3 1 4 4 I want to have all those ID2's which have ID1=1 and ID1=2. Desired result would be: ID2: 1 and 3. It might look kinda weird but i hope that you get what i want. Thanks...