subselects in insert/replace (SCRUM)

mysql-test/r/subselect.result:
  test of insert/replace with subselects
mysql-test/t/subselect.test:
  test of insert/replace with subselects
sql/sql_insert.cc:
  subselects in insert/replace
sql/sql_yacc.yy:
  subselects in insert/replace

mysql-test/r/subselect.result

@@ -335,7 +335,6 @@ a	b
 1	21
 2	22
 drop table t1, t2;
-drop table if exists t1, t2;
 create table t1 (a int NOT NULL, b int, primary key (a));
 create table t2 (a int NOT NULL, b int, primary key (a));
 insert into t1 values (0, 10),(1, 11),(2, 12);
@@ -354,3 +353,64 @@ a	b
 0	10
 1	11
 drop table t1, t2;
+CREATE TABLE t1 (x int);
+create table t2 (a int);
+insert into t2 values (1);
+INSERT INTO t1 (x) VALUES ((SELECT a FROM t2));
+select * from t1;
+x
+1
+insert into t2 values (1);
+INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2));
+select * from t1;
+x
+1
+2
+INSERT INTO t1 (x) select (SELECT SUM(a)+1 FROM t2) FROM t2;
+select * from t1;
+x
+1
+2
+3
+3
+INSERT INTO t1 (x) select (SELECT SUM(x)+2 FROM t1) FROM t2;
+INSERT TABLE 't1' isn't allowed in FROM table list
+INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(x) FROM t1));
+select * from t1;
+x
+1
+2
+3
+3
+9
+drop table t1, t2;
+CREATE TABLE t1 (x int not null, y int, primary key (x));
+create table t2 (a int);
+insert into t2 values (1);
+select * from t1;
+x	y
+replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2));
+select * from t1;
+x	y
+1	2
+replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+2 FROM t2));
+select * from t1;
+x	y
+1	3
+replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a FROM t2));
+select * from t1;
+x	y
+1	3
+4	1
+replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a+1 FROM t2));
+select * from t1;
+x	y
+1	3
+4	2
+replace LOW_PRIORITY into t1 (x, y) VALUES ((SELECT a+1 FROM t2), (SELECT a FROM t2));
+select * from t1;
+x	y
+1	3
+4	2
+2	1
+drop table t1, t2;

mysql-test/t/subselect.test

@@ -216,7 +216,6 @@ select * from t1;
 drop table t1, t2;
 
 #delete with subselects
-drop table if exists t1, t2;
 create table t1 (a int NOT NULL, b int, primary key (a));
 create table t2 (a int NOT NULL, b int, primary key (a));
 insert into t1 values (0, 10),(1, 11),(2, 12);
@@ -226,3 +225,41 @@ select * from t1 where b = (select b from t2 where t1.a = t2.a);
 delete from t1 where b = (select b from t2 where t1.a = t2.a);
 select * from t1;
 drop table t1, t2;
+
+#insert with subselects
+CREATE TABLE t1 (x int);
+create table t2 (a int);
+insert into t2 values (1);
+INSERT INTO t1 (x) VALUES ((SELECT a FROM t2));
+select * from t1;
+insert into t2 values (1);
+INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2));
+-- sleep 1
+select * from t1;
+INSERT INTO t1 (x) select (SELECT SUM(a)+1 FROM t2) FROM t2;
+select * from t1;
+-- error 1093
+INSERT INTO t1 (x) select (SELECT SUM(x)+2 FROM t1) FROM t2;
+INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(x) FROM t1));
+-- sleep 1
+select * from t1;
+drop table t1, t2;
+
+#replace with subselects
+CREATE TABLE t1 (x int not null, y int, primary key (x));
+create table t2 (a int);
+insert into t2 values (1);
+select * from t1;
+replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2));
+select * from t1;
+replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+2 FROM t2));
+select * from t1;
+replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a FROM t2));
+-- sleep 1
+select * from t1;
+replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a+1 FROM t2));
+-- sleep 1
+select * from t1;
+replace LOW_PRIORITY into t1 (x, y) VALUES ((SELECT a+1 FROM t2), (SELECT a FROM t2));
+select * from t1;
+drop table t1, t2;

sql/sql_insert.cc

@@ -114,6 +114,8 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list, List<Item> &fields,
   List_item *values;
   char *query=thd->query;
   thr_lock_type lock_type = table_list->lock_type;
+  TABLE_LIST *insert_table_list= (TABLE_LIST*)
+    thd->lex.select_lex.table_list.first;
   DBUG_ENTER("mysql_insert");
 
   /*
@@ -126,7 +128,9 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list, List<Item> &fields,
 	thd->slave_thread)) ||
       (lock_type == TL_WRITE_CONCURRENT_INSERT && duplic == DUP_REPLACE))
     lock_type=TL_WRITE;
+  table_list->lock_type= lock_type;
 
+  int res;
   if (lock_type == TL_WRITE_DELAYED)
   {
     if (thd->locked_tables)
@@ -141,25 +145,34 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list, List<Item> &fields,
 	DBUG_RETURN(-1);
       }
     }
-    if (!(table = delayed_get_table(thd,table_list)) && !thd->fatal_error)
-      table = open_ltable(thd,table_list,lock_type=thd->update_lock_default);
+    if ((table= delayed_get_table(thd,table_list)) && !thd->fatal_error)
+      if (table_list->next && table)
+	res= open_and_lock_tables(thd, table_list->next);
+      else
+	res= (table == 0);
+    else
+      res= open_and_lock_tables(thd, table_list);
   }
   else
-    table = open_ltable(thd,table_list,lock_type);
-  if (!table)
+    res= open_and_lock_tables(thd, table_list);
+  if (res)
     DBUG_RETURN(-1);
+  fix_tables_pointers(&thd->lex.select_lex);
+
+  table= table_list->table;
   thd->proc_info="init";
   thd->used_tables=0;
   save_time_stamp=table->time_stamp;
   values= its++;
   if (check_insert_fields(thd,table,fields,*values,1) ||
-      setup_tables(table_list) || setup_fields(thd,table_list,*values,0,0,0))
+      setup_tables(insert_table_list) ||
+      setup_fields(thd, insert_table_list, *values, 0, 0, 0))
   {
-    table->time_stamp=save_time_stamp;
+    table->time_stamp= save_time_stamp;
     goto abort;
   }
   value_count= values->elements;
-  while ((values = its++))
+  while ((values= its++))
   {
     counter++;
     if (values->elements != value_count)
@@ -170,9 +183,9 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list, List<Item> &fields,
       table->time_stamp=save_time_stamp;
       goto abort;
     }
-    if (setup_fields(thd,table_list,*values,0,0,0))
+    if (setup_fields(thd,insert_table_list,*values,0,0,0))
     {
-      table->time_stamp=save_time_stamp;
+      table->time_stamp= save_time_stamp;
       goto abort;
     }
   }

sql/sql_yacc.yy

@@ -2837,7 +2837,13 @@ opt_temporary:
 */
 
 insert:
-	INSERT { Lex->sql_command = SQLCOM_INSERT; } insert_lock_option
+	INSERT
+	{
+	  LEX *lex= Lex;
+	  lex->sql_command = SQLCOM_INSERT;
+	  /* for subselects */
+          lex->lock_option= (using_update_log) ? TL_READ_NO_INSERT : TL_READ;
+	} insert_lock_option
 	opt_ignore insert2 
 	{
 	  Select->set_lock_for_tables($3);