Sub query in left join

Question

hi,
I wanted 2 do some thing like this..
Select A.C1, A.C2
From A
LEFT JOIN B
ON A.C1 = B.C1 AND B.C2 = (SELECT T.C1 FROM T WHERE B.C2 = T.C1);How can i do dis?
It is giving me exception :: ORA-01799: a column may not be outer-joined to a subquery
but
Select A.C1, A.C2
From A
LEFT JOIN B
ON A.C1 = B.C1 AND B.C2 = 5;is working fine

Answer 1

Hi,
Atishay wrote:
hi,
I wanted 2 do some thing like this..
Select A.C1, A.C2
From A
LEFT JOIN B
ON A.C1 = B.C1 AND B.C2 = (SELECT T.C1 FROM T WHERE B.C2 = T.C1);
Use curly brackets on the \  tags before anbd after formatted text on this site.
How can i do dis?
It is giving me exception :: ORA-01799: a column may not be outer-joined to a subquery
but
Select A.C1, A.C2
From A
LEFT JOIN B
ON A.C1 = B.C1 AND B.C2 = 5;is working fineHere's one way:Select      A.C1, A.C2
From           A
LEFT JOIN      B
               ON      A.C1 = B.C1
               AND      B.C2 IN (
                              SELECT      C1
                              FROM      T
Another way is to join b and t before outer-joining to a.
I hope this answers your question.
If not, post a little sample data CREATE TABLE and INSERT statements for all tables) and the results you want from that data.