Re: [HACKERS] Some more function-default issues

2009-01-08 Thread Tom Lane
I wrote: > I'd prefer not to have ExecPrepareExpr do it, though; that's supposed > to be working from a read-only expression tree supplied by the caller. > (The fix_opfuncids call in it is already pushing the bounds of that > concept.) > From a structural point of view the right thing would be to

Re: [HACKERS] Some more function-default issues

2009-01-06 Thread Tom Lane
Heikki Linnakangas writes: > That seems ok to me. Calling eval_const_expressions() in ALTER COLUMN > and elsewhere is a good idea for performance reasons as well. Yeah, probably so. > I can only find one more call to fix_opfuncids, where we're not already > calling eval_const_expressions(): Ge

Re: [HACKERS] Some more function-default issues

2009-01-06 Thread Heikki Linnakangas
Tom Lane wrote: The minimum-code-change solution would be to run around and try to make sure every such expression gets passed through eval_const_expressions() before we try to execute it. This is probably doable (looking for calls to fix_opfuncids would be a good guide) but it seems like the po

[HACKERS] Some more function-default issues

2009-01-06 Thread Tom Lane
Some further reflection about Rushabh Lathia's bug report of yesterday led me to the realization that there's a pretty big hole in the function defaults patch. Since we add default values during planning, it doesn't work for any expression that's not fed through the planner. For instance, ALTER C