database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-22 12:22:45 +03:00
Code Activity

Support "variadic" functions, which can accept a variable number of arguments

Browse Source 
so long as all the trailing arguments are of the same (non-array) type.
The function receives them as a single array argument (which is why they
have to all be the same type).

It might be useful to extend this facility to aggregates, but this patch
doesn't do that.

This patch imposes a noticeable slowdown on function lookup --- a follow-on
patch will fix that by adding a redundant column to pg_proc.

Pavel Stehule
This commit is contained in:
Tom Lane
2008-07-16 01:30:23 +00:00
parent 2c773296f8
commit d89737d31c
38 changed files with 915 additions and 170 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/backend/catalog/pg_aggregate.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/pg_aggregate.c,v 1.93 2008/06/19 00:46:04 alvherre Exp $
* $PostgreSQL: pgsql/src/backend/catalog/pg_aggregate.c,v 1.94 2008/07/16 01:30:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -293,6 +293,7 @@ lookup_agg_function(List *fnName,
{
Oid fnOid;
bool retset;
int nvargs;
Oid *true_oid_array;
FuncDetailCode fdresult;
AclResult aclresult;
@@ -305,8 +306,8 @@ lookup_agg_function(List *fnName,
* function's return value. it also returns the true argument types to
* the function.
*/
fdresult = func_get_detail(fnName, NIL, nargs, input_types,
&fnOid, rettype, &retset,
fdresult = func_get_detail(fnName, NIL, nargs, input_types, false,
&fnOid, rettype, &retset, &nvargs,
&true_oid_array);
/* only valid case is a normal function not returning a set */