Can also try UNION. Connor McDonald wrote: > > Add a hint to force it to use the index, and then > check the costs - this may assist in telling you why > the index was not chosen. > > Also, maybe see what happens using IN instead of OR > > hth > connor > > --- "Seefelt, Beth" <[EMAIL PROTECTED]> > wrote: > > > Hi everybody, > > > > I'm hoping someone can help me understand this. > > > > I have this query - > > > > SELECT ORDERID FROM WWW SHOPCART > > WHERE UPPER(MEMBERNAME) ='198917777' ; > > > > I added an index on the column UPPER(MEMBERNAME) and > > it works great. > > > > I have another query - > > > > SELECT ORDERID FROM WWW SHOPCART > > WHERE UPPER(MEMBERNAME) ='198917777' OR > > UPPER(MEMBERNAME)='1989155555'; > > > > and this query will not use the index at all. > > > > I can't understand why the optimizer won't choose to > > use the function based index when there is an OR > > clause. I've tried the same query with just > > MEMBERNAME= and using an index on MEMBERNAME, and > > the optimizer will use the index if I OR my > > criteria together. > > > > Any ideas? > > > > Thanks, > > > > Beth > > -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Stephane Faroult INET: [EMAIL PROTECTED]
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