Bug #53034: Multiple-table DELETE statements not accepting

            "Access compatibility" syntax

The "wild" "DELETE FROM table_name.* ... USING ..." syntax
for multi-table DELETE statements is documented but it was
lost in the fix for the bug 30234.

The table_ident_opt_wild parser rule has been added
to restore the lost syntax.


mysql-test/r/delete.result:
  Test case for bug #53034.
mysql-test/t/delete.test:
  Test case for bug #53034.
sql/sql_yacc.yy:
  Bug #53034: Multiple-table DELETE statements not accepting
              "Access compatibility" syntax
  
  The table_ident_opt_wild parser rule has been added
  to restore the lost syntax.
  Note: simple extending of table_ident with opt_wild in
  the table_alias_ref rule is not acceptable, because
  a) it adds one conflict more and b) this conflict resolves
  in the inappropriate way.

mysql-test/r/delete.result

@@ -358,4 +358,13 @@ INDEX(a), INDEX(b), INDEX(c));
 INSERT INTO t1 VALUES (1,2,3), (4,5,6), (7,8,9);
 DELETE FROM t1 WHERE a = 10 OR b = 20 ORDER BY c LIMIT 1;
 DROP TABLE t1;
+#
+# Bug #53034: Multiple-table DELETE statements not accepting
+#             "Access compatibility" syntax
+#
+CREATE TABLE t1 (id INT);
+CREATE TABLE t2 LIKE t1;
+CREATE TABLE t3 LIKE t1;
+DELETE FROM t1.*, test.t2.*, a.* USING t1, t2, t3 AS a;
+DROP TABLE t1, t2, t3;
 End of 5.1 tests

mysql-test/t/delete.test

@@ -387,4 +387,17 @@ DELETE FROM t1 WHERE a = 10 OR b = 20 ORDER BY c LIMIT 1;
 
 DROP TABLE t1;
 
+--echo #
+--echo # Bug #53034: Multiple-table DELETE statements not accepting
+--echo #             "Access compatibility" syntax
+--echo #
+
+CREATE TABLE t1 (id INT);
+CREATE TABLE t2 LIKE t1;
+CREATE TABLE t3 LIKE t1;
+
+DELETE FROM t1.*, test.t2.*, a.* USING t1, t2, t3 AS a;
+
+DROP TABLE t1, t2, t3;
+
 --echo End of 5.1 tests

sql/sql_yacc.yy

@@ -1297,6 +1297,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
 
 %type <table>
         table_ident table_ident_nodb references xid
+        table_ident_opt_wild
 
 %type <simple_string>
         remember_name remember_end opt_ident opt_db text_or_password
@@ -9622,7 +9623,7 @@ table_alias_ref_list:
         ;
 
 table_alias_ref:
-          table_ident
+          table_ident_opt_wild
           {
             if (!Select->add_table_to_list(YYTHD, $1, NULL,
                                            TL_OPTION_UPDATING | TL_OPTION_ALIAS,
@@ -11405,6 +11406,21 @@ table_ident:
           }
         ;
 
+table_ident_opt_wild:
+          ident opt_wild
+          {
+            $$= new Table_ident($1);
+            if ($$ == NULL)
+              MYSQL_YYABORT;
+          }
+        | ident '.' ident opt_wild
+          {
+            $$= new Table_ident(YYTHD, $1,$3,0);
+            if ($$ == NULL)
+              MYSQL_YYABORT;
+          }
+        ;
+
 table_ident_nodb:
           ident
           {