2009/4/28 Tom Lane
> Well, you've omitted showing us the code where the problem is likely to
> be, but I am kinda thinking that you've shot yourself in the foot by
> trying to represent your special ordering clause as a simple constant.
> The planner is quite smart enough to throw away "order by
Werner Echezuria writes:
> Later in planner.c on grouping_planner function I do something like this:
Well, you've omitted showing us the code where the problem is likely to
be, but I am kinda thinking that you've shot yourself in the foot by
trying to represent your special ordering clause as a s
Well, I'm in a project called PostgreSQLf and we're trying to include fuzzy
logic inside PostgreSQL. Now I've been thinking this is getting too hard, do
you know if I can just sort the results with something like this :
Sort(ResultSlot,column)?, I mean without the Order By clause?
2009/4/28 Martij
On Sun, Apr 26, 2009 at 08:33:42PM -0430, Werner Echezuria wrote:
> Well, I do a query like this: "SELECT * FROM historial WHERE
> id_grupo=grupo_hist ORDER BY grmemb LIMIT 10;", then in transformSortClause
> I know it this way:
Ok, this is way over my head. But really, it would be helpful to know
Well, I do a query like this: "SELECT * FROM historial WHERE
id_grupo=grupo_hist ORDER BY grmemb LIMIT 10;", then in transformSortClause
I know it this way:
/*
* transformSortClause -
* transform an ORDER BY clause
*
* ORDER BY items will be added to the targetlist (as resjunk columns)
On Sun, Apr 26, 2009 at 04:20:41PM -0430, Werner Echezuria wrote:
> Hi, I've been trying to sort a column that performs some calculations, but
> postgres says this: ERROR: invalid attnum: -12851. I was searching on the
> source code, and I guess the error araises around this macro:
I'm pretty sur
Hi, I've been trying to sort a column that performs some calculations, but
postgres says this: ERROR: invalid attnum: -12851. I was searching on the
source code, and I guess the error araises around this macro:
/*
* Copy the given tuple into memory we control, and decrease availMem.
* Th
