Oracle Tip: Understand how NULLs affect IN and EXISTS
ByGuestContributorAugust22,2004,5:36pmPDTOnthesurface,itmayappearthattheSQLclausesINandEXISTSareinterchangeable.However,they'requitedifferentinhowtheyhandleNULLvaluesandmaygivedifferentresults.Theprob