database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-10 17:42:29 +03:00
Code Activity

SELECT FOR UPDATE is implemented...

Browse Source
This commit is contained in:
Vadim B. Mikheev
1999-01-25 12:01:19 +00:00
parent 443e24beb7
commit 247b3f9054
7 changed files with 715 additions and 581 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/backend/parser/analyze.c
View File

@@ -5,7 +5,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: analyze.c,v 1.94 1999/01/21 22:48:07 momjian Exp $
* $Id: analyze.c,v 1.95 1999/01/25 12:01:05 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -45,7 +45,8 @@ static Query *transformUpdateStmt(ParseState *pstate, UpdateStmt *stmt);
static Query *transformCursorStmt(ParseState *pstate, SelectStmt *stmt);
static Query *transformCreateStmt(ParseState *pstate, CreateStmt *stmt);
static void transformForUpdate(Query *qry, List *forUpdate);
static void transformForUpdate(Query *qry, List *forUpdate);
void CheckSelectForUpdate(Query *qry);
List *extras_before = NIL;
List *extras_after = NIL;
@@ -1134,6 +1135,19 @@ Node *A_Expr_to_Expr(Node *ptr, bool *intersect_present)
return result;
}
void
CheckSelectForUpdate(Query *qry)
{
if (qry->unionClause != NULL)
elog(ERROR, "SELECT FOR UPDATE is not allowed with UNION/INTERSECT/EXCEPT clause");
if (qry->uniqueFlag != NULL)
elog(ERROR, "SELECT FOR UPDATE is not allowed with DISTINCT clause");
if (qry->groupClause != NULL)
elog(ERROR, "SELECT FOR UPDATE is not allowed with GROUP BY clause");
if (qry->hasAggs)
elog(ERROR, "SELECT FOR UPDATE is not allowed with AGGREGATE");
}
static void
transformForUpdate(Query *qry, List *forUpdate)
{
@@ -1142,6 +1156,8 @@ transformForUpdate(Query *qry, List *forUpdate)
List *l;
Index i;
CheckSelectForUpdate(qry);
if (lfirst(forUpdate) == NULL) /* all tables */
{
i = 1;

1093
src/backend/parser/gram.c
View File

File diff suppressed because it is too large Load Diff

17
src/backend/parser/gram.y
View File

@@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.48 1999/01/22 19:35:54 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.49 1999/01/25 12:01:13 vadim Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -2798,19 +2798,8 @@ SelectStmt: select_w_o_sort sort_clause for_update_clause
first_select->forUpdate = $3;
$$ = (Node *)first_select;
}
if (((SelectStmt *)$$)->forUpdate != NULL)
{
SelectStmt *n = (SelectStmt *)$$;
if (n->unionClause != NULL)
elog(ERROR, "SELECT FOR UPDATE is not allowed with UNION/INTERSECT/EXCEPT clause");
if (n->unique != NULL)
elog(ERROR, "SELECT FOR UPDATE is not allowed with DISTINCT clause");
if (n->groupClause != NULL)
elog(ERROR, "SELECT FOR UPDATE is not allowed with GROUP BY clause");
if (n->havingClause != NULL)
elog(ERROR, "SELECT FOR UPDATE is not allowed with HAVING clause");
}
if (((SelectStmt *)$$)->forUpdate != NULL && QueryIsRule)
elog(ERROR, "SELECT FOR UPDATE is not allowed in RULES");
}
;