"ldh@xxxxxxxxxxxxxxxxxx" <ldh@xxxxxxxxxxxxxxxxxx> writes: > SET lc_messages = 'C'; > show lc_messages; --> OK 'C' > explain (analyze,buffers,COSTS,TIMING) > select MAX(toFloat(b, null)) as "b" from sampletest > ... > Execution Time: 175.600 ms > explain (analyze,buffers,COSTS,TIMING) > select MAX(toFloat(a, null)) as "a" from sampletest > ... > Execution Time: 88031.585 ms > Doesn't seem to make a difference unless I misunderstood what you were asking for regarding the locale? Hmm. This suggests that whatever effect Andrew found with NLS is actually not the explanation for your problem. So I'm even more confused than before. regards, tom lane
