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Re: SQL join with distinct



fixed

Joel wrote:
I would like to run the following, but reduce the "B" file down to distinct key values PRIOR to the join.

Can this be accomplished in one SQL step?

select a.* from miscchg A, miscchgtmp B
where a.ASHPNBR = b.ashpnbr
and a.ABLDNGD = b.ABLDNGD

Maybe using "IN"? But that only works with one column, not two as I need.


Joel -

It appears that your question has already been answered, but I wanted to inform you that it is possible use the "IN" clause with multiple columns in a subselect, so here is another way:

Select * From miscchg
Where (ASHPNBR, ABLDNGD)
In (Select distinct ashpnbr, abldngd From miscchgtmp)

Regards,
sjl








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