Interesting, doing your query in the IDE (where I can see SQL timing), having no index on either column excutes ~.98 seconds every time, but with an index it's 1.0n-1.1 for the same query.
Doing mine was around 1.9 with indexes set and 1.6 without.
Time to try Vlad's idea...
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>Select iValue from UniqInt02 Where iDel=0 Order by iValue Top 1
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>Why not use this one instead?
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>Select min(iValue) from UniqInt02 Where iDel=0
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>hth,