Abhijit Menon-Sen <ams(at)oryx(dot)com> writes:
> There's a TODO item about making COMMENT ON accept an expression. The
> grammar change is simple (SConst|NULL_P->a_expr), but as far as I can
> see, there are no similar utility commands that take expressions, and
> I'm not very familiar with the planner and executor, so I could use
> some advice about how to evaluate the expression.
There aren't *any* utility commands that take expressions, and I would
say that that TODO item is seriously mis-scoped. What is the use of
making COMMENT in particular do this? Fixing all of them might be
interesting.
regards, tom lane