>Hi,
>I have recently done some performance testing on large datasets in VFP9, as result we are now using SET EXACT ON & SET ANSI ON and not using "==" as it does have a perceivable impact on performance when processing large amounts of data.

SET EXACT ON and == are NOT equivalent. == compares strings for exact equality while SET EXACT ON pads the shrter string with spaces and then comapres them. This means that if the difference vetween two strings is trailing spaces then SET EXACT ON will NOT notice the difference while == will.