General information
Category:
Coding, syntax & commands
>>>>I have 3 files, 1 parent & 2 child
>>>>
>>>>When I give statment like :-
>>>>
>>>>sele parentfield, child1, child2 from parent, child1, child2 where parent.code=child1.code and parent.code=child2.code
>>>>
>>>>It shows me double records i.e.
>>>>
>>>>if a parent record is having 2 child records in each file, it is showing me 4 records, instead of 2. (values are getting repeated).
>>>>
>>>>Any Ideas/suggestions ??
>>>
>>>Try adding a "GROUP BY parent.code" clause to your SELECT statement.
>>
>>select distinct. otherwise you'll see first rec child1 and first rec child2, first rec child1 second rec child2, etc.
>
>It is showing me only one record.. Pls advs..(it should show 2)
Vinod,
Dave's suggestion to SELECT DISTINCT is the correct one (for NORMAL data) and actually better than my Group By with two SQLs, even though I think my solution should work. The problem is that if SELECT DISTINCT does not work for you, why do you want to SELECT 2 duplicate records, and how come that is more desirable that 4 duplicate records?
SQL is fun! Right?
JP
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