No, use ORDER BY Neville Franks wrote: > If I use two columns for a key (primary or separate index) and query > just on the first column component will I always get back the first > match in a set. For example. > > ----- > create table mytable ( clm1 text collate nocase, clm2 text collate nocase, > constraint mycs1 primary key( clm1, clm2 ) ); > > insert following: > Clm1 Clm2 > abc 123 > abc 456 > abc 789 > def 123 > def 456 > def 789 > > select * from table where clm1='def'; > ----- > > Will the returned row always be def - 123. ie. the first row for def? > > I've looked at the query plan for this select and it does use the > index if clm1 alone is in the query and it appears to match on the > first row. > > Also my tests indicate I do get back the first matching row. But I'd > like confirmation if possible. >
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