[EMAIL PROTECTED] writes: > Is it possible to store the calculated logical value of certain > expressions, e.g. boolean OpExprs, in their ExprState on a per tuple > basis to reuse them later? (I guess I described some kind of > 'condition cache' here.)
No ... what would be the point? If the expression is known constant it'll be folded to a Const at plan time, and if it's not constant I don't see how we know when we can cache its value. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend