Thomas Kellerer <spam_eater(at)gmx(dot)net> writes:
> I'm till a bit surprised that parsing the statement _with_ a column list is mesurably slower than withou a column list.
Well, nobody's offered any actual *numbers* here. It's clear that
parsing the column list will take more time than not doing so, but
whether that adds up to anything significant or even measurable
compared to the rest of the statement's cost is not so clear.
Want to do some experiments?
regards, tom lane