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Yohoo UNIONS of VIEWS.

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This commit is contained in:
Bruce Momjian
1998-01-09 05:48:22 +00:00
parent 8f125413b0
commit 31a697bf92
3 changed files with 38 additions and 17 deletions
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19
src/backend/tcop/postgres.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.59 1998/01/07 21:06:00 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.60 1998/01/09 05:48:22 momjian Exp $
*
* NOTES
* this is the "main" module of the postgres backend and
@ -439,6 +439,8 @@ pg_parse_and_plan(char *query_string, /* string to execute */
* rewrites */
for (i = 0; i < querytree_list->len; i++)
{
List *union_result, *union_list, *rewritten_list;
querytree = querytree_list->qtrees[i];
@ -465,6 +467,19 @@ pg_parse_and_plan(char *query_string, /* string to execute */
/* rewrite queries (retrieve, append, delete, replace) */
rewritten = QueryRewrite(querytree);
/*
* Rewrite the UNIONS.
*/
foreach(rewritten_list, rewritten)
{
Query *qry = (Query *)lfirst(rewritten_list);
union_result = NIL;
foreach(union_list, qry->unionClause)
union_result = nconc(union_result, QueryRewrite((Query *)lfirst(union_list)));
qry->unionClause = union_result;
}
if (rewritten != NULL)
{
int len,
@ -1372,7 +1387,7 @@ PostgresMain(int argc, char *argv[])
if (IsUnderPostmaster == false)
{
puts("\nPOSTGRES backend interactive interface");
puts("$Revision: 1.59 $ $Date: 1998/01/07 21:06:00 $");
puts("$Revision: 1.60 $ $Date: 1998/01/09 05:48:22 $");
}
/* ----------------