Bug#45806 crash when replacing into a view with a join!

The crash happend because for views which are joins
we have table_list->table == 0 and 
table_list->table->'any method' call leads to crash.
The fix is to perform table_list->table->file->extra()
method for all tables belonging to view.


mysql-test/r/view.result:
  test result
mysql-test/t/view.test:
  test case
sql/sql_insert.cc:
  added prepare_for_positional_update() function
  which updates extra info about primary key for
  tables belonging to view.

mysql-test/r/view.result

@@ -3723,6 +3723,117 @@ DROP TABLE t1;
 
 # -- End of test case for Bug#40825
 
+# 
+# Bug #45806 crash when replacing into a view with a join!
+# 
+CREATE TABLE t1(a INT UNIQUE);
+CREATE VIEW v1 AS SELECT t1.a FROM t1, t1 AS a;
+INSERT INTO t1 VALUES (1), (2);
+REPLACE INTO v1(a) SELECT 1 FROM t1,t1 AS c;
+SELECT * FROM v1;
+a
+1
+2
+1
+2
+REPLACE INTO v1(a) SELECT 3 FROM t1,t1 AS c;
+SELECT * FROM v1;
+a
+1
+2
+3
+1
+2
+3
+1
+2
+3
+DELETE FROM t1 WHERE a=3;
+INSERT INTO v1(a) SELECT 1 FROM t1,t1 AS c
+ON DUPLICATE KEY UPDATE `v1`.`a`= 1;
+SELECT * FROM v1;
+a
+1
+2
+1
+2
+CREATE VIEW v2 AS SELECT t1.a FROM t1, v1 AS a;
+REPLACE INTO v2(a) SELECT 1 FROM t1,t1 AS c;
+SELECT * FROM v2;
+a
+1
+2
+1
+2
+1
+2
+1
+2
+REPLACE INTO v2(a) SELECT 3 FROM t1,t1 AS c;
+SELECT * FROM v2;
+a
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+INSERT INTO v2(a) SELECT 1 FROM t1,t1 AS c
+ON DUPLICATE KEY UPDATE `v2`.`a`= 1;
+SELECT * FROM v2;
+a
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+1
+2
+3
+DROP VIEW v1;
+DROP VIEW v2;
+DROP TABLE t1;
+# -- End of test case for Bug#45806
 # -----------------------------------------------------------------
 # -- End of 5.0 tests.
 # -----------------------------------------------------------------

mysql-test/t/view.test

@@ -3703,6 +3703,38 @@ DROP TABLE t1;
 --echo # -- End of test case for Bug#40825
 --echo
 
+--echo # 
+--echo # Bug #45806 crash when replacing into a view with a join!
+--echo # 
+CREATE TABLE t1(a INT UNIQUE);
+CREATE VIEW v1 AS SELECT t1.a FROM t1, t1 AS a;
+INSERT INTO t1 VALUES (1), (2);
+
+REPLACE INTO v1(a) SELECT 1 FROM t1,t1 AS c;
+SELECT * FROM v1;
+REPLACE INTO v1(a) SELECT 3 FROM t1,t1 AS c;
+SELECT * FROM v1;
+DELETE FROM t1 WHERE a=3;
+INSERT INTO v1(a) SELECT 1 FROM t1,t1 AS c
+ON DUPLICATE KEY UPDATE `v1`.`a`= 1;
+SELECT * FROM v1;
+
+CREATE VIEW v2 AS SELECT t1.a FROM t1, v1 AS a;
+
+REPLACE INTO v2(a) SELECT 1 FROM t1,t1 AS c;
+SELECT * FROM v2;
+REPLACE INTO v2(a) SELECT 3 FROM t1,t1 AS c;
+SELECT * FROM v2;
+INSERT INTO v2(a) SELECT 1 FROM t1,t1 AS c
+ON DUPLICATE KEY UPDATE `v2`.`a`= 1;
+SELECT * FROM v2;
+
+DROP VIEW v1;
+DROP VIEW v2;
+DROP TABLE t1;
+
+--echo # -- End of test case for Bug#45806
+
 --echo # -----------------------------------------------------------------
 --echo # -- End of 5.0 tests.
 --echo # -----------------------------------------------------------------

sql/sql_insert.cc

@@ -1148,6 +1148,33 @@ static bool mysql_prepare_insert_check_table(THD *thd, TABLE_LIST *table_list,
 }
 
 
+/*
+  Get extra info for tables we insert into
+
+  @param table     table(TABLE object) we insert into,
+                   might be NULL in case of view
+  @param           table(TABLE_LIST object) or view we insert into
+*/
+
+static void prepare_for_positional_update(TABLE *table, TABLE_LIST *tables)
+{
+  if (table)
+  {
+    if(table->reginfo.lock_type != TL_WRITE_DELAYED)
+      table->file->extra(HA_EXTRA_RETRIEVE_PRIMARY_KEY);
+    return;
+  }
+
+  DBUG_ASSERT(tables->view);
+  List_iterator<TABLE_LIST> it(*tables->view_tables);
+  TABLE_LIST *tbl;
+  while ((tbl= it++))
+    prepare_for_positional_update(tbl->table, tbl);
+
+  return;
+}
+
+
 /*
   Prepare items in INSERT statement
 
@@ -1298,9 +1325,8 @@ bool mysql_prepare_insert(THD *thd, TABLE_LIST *table_list,
     Only call extra() handler method if we are not performing a DELAYED
     operation. It will instead be executed by delayed insert thread.
   */
-  if ((duplic == DUP_UPDATE || duplic == DUP_REPLACE) &&
-      (table->reginfo.lock_type != TL_WRITE_DELAYED))
-    table->file->extra(HA_EXTRA_RETRIEVE_PRIMARY_KEY);
+  if (duplic == DUP_UPDATE || duplic == DUP_REPLACE)
+    prepare_for_positional_update(table, table_list);
   DBUG_RETURN(FALSE);
 }