Re: EXEC_EVALDEBUG debugging broken?

[Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>]

peter(dot)trautmeier(at)gmx(dot)de 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