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Arrange to "inline" SQL functions that appear in a query's FROM clause,

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are declared to return set, and consist of just a single SELECT.  We
can replace the FROM-item with a sub-SELECT and then optimize much as
if we were dealing with a view.  Patch from Richard Rowell, cleaned up
by me.
This commit is contained in:
Tom Lane
2008-03-18 22:04:14 +00:00
parent 433c5238bf
commit 0d49838df6
8 changed files with 424 additions and 48 deletions
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5
src/backend/catalog/pg_proc.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/pg_proc.c,v 1.148 2008/01/01 19:45:48 momjian Exp $
* $PostgreSQL: pgsql/src/backend/catalog/pg_proc.c,v 1.149 2008/03/18 22:04:14 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -601,7 +601,8 @@ fmgr_sql_validator(PG_FUNCTION_ARGS)
proc->proargtypes.values,
proc->pronargs);
(void) check_sql_fn_retval(funcoid, proc->prorettype,
querytree_list, NULL);
querytree_list,
false, NULL);
}
else
querytree_list = pg_parse_query(prosrc);