> where exists ( > select 1 from master_table where > master_table.id=detail_table.masterid and > masterfieldtocheck = okvalue and > masterfield2tocheck = okvalue2); > > -- or > > where detail_table.masterid in ( > select id from master_table where > masterfieldtocheck = okvalue and > masterfield2tocheck = okvalue2); > > -- > Igor Tandetnik > > Thanks,Igor, it works, I see that sql itself is smart enough ) Both suggested by you are similar in speed, but the latter looks more self-explanatory for me.
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