Fixes for CREATE_OR_REPLACE

- MDEV-5587 Server crashes in Locked_tables_list::restore_lock on CREATE OR REPLACE .. SELECT under LOCK
- MDEV-5586 Assertion `share->tdc.all_tables.is_empty() || remove_type != TDC_RT_REMOVE_ALL' fails in tdc_remove_table
- MDEV-5588 Strange error on CREATE OR REPLACE table over an existing view

mysql-test/r/create_or_replace.result:
  Added test cases
mysql-test/r/lowercase_view.result:
  New error message
mysql-test/r/merge.result:
  New error message
mysql-test/r/multi_update.result:
  New error message
mysql-test/r/subselect.result:
  New error message
mysql-test/r/subselect_exists_to_in.result:
  New error message
mysql-test/r/subselect_no_mat.result:
  New error message
mysql-test/r/subselect_no_opts.result:
  New error message
mysql-test/r/subselect_no_scache.result:
  New error message
mysql-test/r/subselect_no_semijoin.result:
  New error message
mysql-test/r/view.result:
  New error message
mysql-test/suite/funcs_1/r/myisam_views-big.result:
  New error message
mysql-test/t/create_or_replace.test:
  New tests
mysql-test/t/view.test:
  New error message
sql/share/errmsg-utf8.txt:
  Added new error message
sql/sql_base.cc:
  Updated error message
  Do an automatic UNLOCK TABLES if we don't have any locked tables (safety fix)
sql/sql_db.cc:
  Updated arguments
sql/sql_load.cc:
  New error message
sql/sql_parse.cc:
  Check that we are not using a table we are dropping and re-creating
sql/sql_table.cc:
  Added parameter to mysql_rm_table_no_locks() to not automaticly do UNLOCK TABLES
  Added better error message if trying to drop a view with DROP TABLE
  Don't try to create something we select from
sql/sql_table.h:
  Updated prototypes

mysql-test/r/create_or_replace.result

-drop table if exists t1,t2;
+drop table if exists t1,t2,t3;
 CREATE TABLE t2 (a int);
 INSERT INTO t2 VALUES(1),(2),(3);
 #
@@ -97,13 +97,23 @@ CREATE TEMPORARY TABLE t1 AS SELECT a FROM t2;
 CREATE TEMPORARY TABLE IF NOT EXISTS t1(a int, b int) SELECT 1,2 FROM t2;
 Warnings:
 Note	1050	Table 't1' already exists
-create or replace table t1 as select 1;
-show create table t1;
+DROP TABLE t1;
+CREATE TABLE t1 (a int);
+CREATE OR REPLACE TABLE t1 AS SELECT 1;
+SHOW CREATE TABLE t1;
 Table	Create Table
-t1	CREATE TEMPORARY TABLE `t1` (
-  `a` int(11) DEFAULT NULL
+t1	CREATE TABLE `t1` (
+  `1` int(1) NOT NULL DEFAULT '0'
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t1;
+create table t1 (a int);
+create or replace table t1 as select * from t1;
+ERROR HY000: Table 't1' is specified twice, both as a target for 'CREATE' and as a separate source for data
+create or replace table t1 as select a from (select a from t1) as t3;
+ERROR HY000: Table 't1' is specified twice, both as a target for 'CREATE' and as a separate source for data
+create or replace table t1 as select a from t2 where t2.a in (select a from t1);
+ERROR HY000: Table 't1' is specified twice, both as a target for 'CREATE' and as a separate source for data
+drop table t1;
 #
 # Testing with normal tables
 #
@@ -191,6 +201,15 @@ SELECT * FROM t1 as t1_read;
 ERROR HY000: Table 't1_read' was not locked with LOCK TABLES
 DROP TABLE t1;
 UNLOCK TABLES;
+CREATE OR REPLACE TABLE t1 (a int);
+LOCK TABLE t1 WRITE;
+CREATE OR REPLACE TABLE t1 AS SELECT 1;
+SELECT * from t1;
+1
+1
+SELECT * from t2;
+ERROR HY000: Table 't2' was not locked with LOCK TABLES
+DROP TABLE t1;
 #
 # Test also with InnoDB (transactional engine)
 #
@@ -253,6 +272,21 @@ t1	CREATE TABLE `t1` (
   `a` int(11) DEFAULT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 drop table t1;
+create or replace table t1 like t2;
+create or replace table t1 like t1;
+ERROR 42000: Not unique table/alias: 't1'
+drop table t1;
+CREATE TEMPORARY TABLE t1 like t2;
+CREATE OR REPLACE TABLE t1 like t1;
+ERROR 42000: Not unique table/alias: 't1'
+CREATE OR REPLACE TABLE t1 like t1;
+ERROR 42000: Not unique table/alias: 't1'
+drop table t1;
+CREATE TEMPORARY TABLE t1 like t2;
+CREATE OR REPLACE TEMPORARY TABLE t3 like t1;
+CREATE OR REPLACE TEMPORARY TABLE t3 like t3;
+ERROR 42000: Not unique table/alias: 't3'
+drop table t1,t3;
 #
 # Test with prepared statements
 #
@@ -286,8 +320,8 @@ create table if not exists t1 (a int);
 Warnings:
 Note	1050	Table 't1' already exists
 create or replace table t1 (a int);
-ERROR 42S02: Unknown table 'test.t1'
+ERROR 42S02: 'test.t1' is a view
 drop table t1;
-ERROR 42S02: Unknown table 'test.t1'
+ERROR 42S02: 'test.t1' is a view
 drop view t1;
 DROP TABLE t2;

mysql-test/r/lowercase_view.result

@@ -20,13 +20,13 @@ ERROR HY000: The definition of table 'v1Aa' prevents operation UPDATE on table '
 update v2Aa set col1 = (select max(col1) from t1Aa);
 ERROR HY000: The definition of table 'v2Aa' prevents operation UPDATE on table 'v2Aa'.
 update v2aA set col1 = (select max(col1) from v2Aa);
-ERROR HY000: You can't specify target table 'v2aA' for update in FROM clause
+ERROR HY000: Table 'v2aA' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update v2aA,t2Aa set v2Aa.col1 = (select max(col1) from v1aA) where v2aA.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v1aA' prevents operation UPDATE on table 'v2aA'.
 update t1aA,t2Aa set t1Aa.col1 = (select max(col1) from v1Aa) where t1aA.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v1Aa' prevents operation UPDATE on table 't1aA'.
 update v1aA,t2Aa set v1Aa.col1 = (select max(col1) from v1aA) where v1Aa.col1 = t2aA.col1;
-ERROR HY000: You can't specify target table 'v1aA' for update in FROM clause
+ERROR HY000: Table 'v1aA' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t2Aa,v2Aa set v2aA.col1 = (select max(col1) from v1aA) where v2Aa.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v1aA' prevents operation UPDATE on table 't2Aa'.
 update t2Aa,t1Aa set t1aA.col1 = (select max(col1) from v1Aa) where t1Aa.col1 = t2aA.col1;
@@ -36,17 +36,17 @@ ERROR HY000: The definition of table 'v1aA' prevents operation UPDATE on table '
 update v2aA,t2Aa set v2Aa.col1 = (select max(col1) from t1aA) where v2aA.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v2aA' prevents operation UPDATE on table 'v2aA'.
 update t1Aa,t2Aa set t1aA.col1 = (select max(col1) from t1Aa) where t1aA.col1 = t2aA.col1;
-ERROR HY000: You can't specify target table 't1Aa' for update in FROM clause
+ERROR HY000: Table 't1Aa' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update v1aA,t2Aa set v1Aa.col1 = (select max(col1) from t1Aa) where v1aA.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v1aA' prevents operation UPDATE on table 'v1aA'.
 update t2Aa,v2Aa set v2aA.col1 = (select max(col1) from t1aA) where v2Aa.col1 = t2aA.col1;
-ERROR HY000: You can't specify target table 't2Aa' for update in FROM clause
+ERROR HY000: Table 't2Aa' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t2Aa,t1Aa set t1aA.col1 = (select max(col1) from t1Aa) where t1aA.col1 = t2aA.col1;
-ERROR HY000: You can't specify target table 't2Aa' for update in FROM clause
+ERROR HY000: Table 't2Aa' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t2Aa,v1Aa set v1aA.col1 = (select max(col1) from t1Aa) where v1Aa.col1 = t2aA.col1;
-ERROR HY000: You can't specify target table 't2Aa' for update in FROM clause
+ERROR HY000: Table 't2Aa' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update v2aA,t2Aa set v2Aa.col1 = (select max(col1) from v2aA) where v2Aa.col1 = t2aA.col1;
-ERROR HY000: You can't specify target table 'v2aA' for update in FROM clause
+ERROR HY000: Table 'v2aA' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t1aA,t2Aa set t1Aa.col1 = (select max(col1) from v2aA) where t1aA.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v2aA' prevents operation UPDATE on table 't1aA'.
 update v1aA,t2Aa set v1Aa.col1 = (select max(col1) from v2Aa) where v1aA.col1 = t2aA.col1;
@@ -64,27 +64,27 @@ ERROR HY000: The definition of table 'v3aA' prevents operation UPDATE on table '
 update v3aA set v3Aa.col1 = (select max(col1) from v2aA);
 ERROR HY000: The definition of table 'v2aA' prevents operation UPDATE on table 'v3aA'.
 update v3aA set v3Aa.col1 = (select max(col1) from v3aA);
-ERROR HY000: You can't specify target table 'v3aA' for update in FROM clause
+ERROR HY000: Table 'v3aA' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 delete from v2Aa where col1 = (select max(col1) from v1Aa);
 ERROR HY000: The definition of table 'v1Aa' prevents operation DELETE on table 'v2Aa'.
 delete from v2aA where col1 = (select max(col1) from t1Aa);
 ERROR HY000: The definition of table 'v2aA' prevents operation DELETE on table 'v2aA'.
 delete from v2Aa where col1 = (select max(col1) from v2aA);
-ERROR HY000: You can't specify target table 'v2Aa' for update in FROM clause
+ERROR HY000: Table 'v2Aa' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete v2Aa from v2aA,t2Aa where (select max(col1) from v1aA) > 0 and v2Aa.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v1aA' prevents operation DELETE on table 'v2aA'.
 delete t1aA from t1Aa,t2Aa where (select max(col1) from v1Aa) > 0 and t1aA.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v1Aa' prevents operation DELETE on table 't1Aa'.
 delete v1aA from v1Aa,t2Aa where (select max(col1) from v1aA) > 0 and v1Aa.col1 = t2aA.col1;
-ERROR HY000: You can't specify target table 'v1Aa' for update in FROM clause
+ERROR HY000: Table 'v1Aa' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete v2aA from v2Aa,t2Aa where (select max(col1) from t1Aa) > 0 and v2aA.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v2Aa' prevents operation DELETE on table 'v2Aa'.
 delete t1aA from t1Aa,t2Aa where (select max(col1) from t1aA) > 0 and t1Aa.col1 = t2aA.col1;
-ERROR HY000: You can't specify target table 't1Aa' for update in FROM clause
+ERROR HY000: Table 't1Aa' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete v1aA from v1Aa,t2Aa where (select max(col1) from t1aA) > 0 and v1aA.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v1Aa' prevents operation DELETE on table 'v1Aa'.
 delete v2Aa from v2aA,t2Aa where (select max(col1) from v2Aa) > 0 and v2aA.col1 = t2aA.col1;
-ERROR HY000: You can't specify target table 'v2aA' for update in FROM clause
+ERROR HY000: Table 'v2aA' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete t1Aa from t1aA,t2Aa where (select max(col1) from v2Aa) > 0 and t1Aa.col1 = t2aA.col1;
 ERROR HY000: The definition of table 'v2Aa' prevents operation DELETE on table 't1aA'.
 delete v1Aa from v1aA,t2Aa where (select max(col1) from v2aA) > 0 and v1Aa.col1 = t2aA.col1;
@@ -98,15 +98,15 @@ ERROR HY000: The definition of table 'v1aA' prevents operation INSERT on table '
 insert into v2Aa values ((select max(col1) from t1Aa));
 ERROR HY000: The definition of table 'v2Aa' prevents operation INSERT on table 'v2Aa'.
 insert into t1aA values ((select max(col1) from t1Aa));
-ERROR HY000: You can't specify target table 't1aA' for update in FROM clause
+ERROR HY000: Table 't1aA' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into v2aA values ((select max(col1) from t1aA));
 ERROR HY000: The definition of table 'v2aA' prevents operation INSERT on table 'v2aA'.
 insert into v2Aa values ((select max(col1) from v2aA));
-ERROR HY000: You can't specify target table 'v2Aa' for update in FROM clause
+ERROR HY000: Table 'v2Aa' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into t1Aa values ((select max(col1) from v2Aa));
 ERROR HY000: The definition of table 'v2Aa' prevents operation INSERT on table 't1Aa'.
 insert into v2aA values ((select max(col1) from v2Aa));
-ERROR HY000: You can't specify target table 'v2aA' for update in FROM clause
+ERROR HY000: Table 'v2aA' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into v3Aa (col1) values ((select max(col1) from v1Aa));
 ERROR HY000: The definition of table 'v1Aa' prevents operation INSERT on table 'v3Aa'.
 insert into v3aA (col1) values ((select max(col1) from t1aA));

mysql-test/r/merge.result

@@ -3657,85 +3657,85 @@ insert into tmp (b) values (1);
 insert into t1 (a) values (1);
 insert into t3 (b) values (1);
 insert into m1 (a) values ((select max(a) from m1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from m2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from t1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from t2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from t3, m1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from t3, m2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from t3, t1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from t3, t2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from tmp, m1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from tmp, m2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from tmp, t1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from tmp, t2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into m1 (a) values ((select max(a) from v1));
 ERROR HY000: The definition of table 'v1' prevents operation INSERT on table 'm1'.
 insert into m1 (a) values ((select max(a) from tmp, v1));
 ERROR HY000: The definition of table 'v1' prevents operation INSERT on table 'm1'.
 update m1 set a = ((select max(a) from m1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from m2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from t1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from t2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from t3, m1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from t3, m2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from t3, t1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from t3, t2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from tmp, m1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from tmp, m2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from tmp, t1));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from tmp, t2));
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update m1 set a = ((select max(a) from v1));
 ERROR HY000: The definition of table 'v1' prevents operation UPDATE on table 'm1'.
 update m1 set a = ((select max(a) from tmp, v1));
 ERROR HY000: The definition of table 'v1' prevents operation UPDATE on table 'm1'.
 delete from m1 where a = (select max(a) from m1);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from m2);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from t1);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from t2);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from t3, m1);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from t3, m2);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from t3, t1);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from t3, t2);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from tmp, m1);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from tmp, m2);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from tmp, t1);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from tmp, t2);
-ERROR HY000: You can't specify target table 'm1' for update in FROM clause
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from m1 where a = (select max(a) from v1);
 ERROR HY000: The definition of table 'v1' prevents operation DELETE on table 'm1'.
 delete from m1 where a = (select max(a) from tmp, v1);

mysql-test/r/multi_update.result

@@ -439,9 +439,9 @@ drop table t1, t2, t3;
 create table t1 (col1 int);
 create table t2 (col1 int);
 update t1,t2 set t1.col1 = (select max(col1) from t1) where t1.col1 = t2.col1;
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 delete t1 from t1,t2 where t1.col1 < (select max(col1) from t1) and t1.col1 = t2.col1;
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 drop table t1,t2;
 create table t1 (
 aclid bigint not null primary key,
@@ -457,7 +457,7 @@ drop table t1, t2;
 create table t1(a int);
 create table t2(a int);
 delete from t1,t2 using t1,t2 where t1.a=(select a from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 drop table t1, t2;
 create table t1 ( c char(8) not null ) engine=innodb;
 insert into t1 values ('0'),('1'),('2'),('3'),('4'),('5'),('6'),('7'),('8'),('9');

mysql-test/r/subselect.result

@@ -579,7 +579,7 @@ a	b
 1	11
 2	12
 update t1 set b= (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t1 set b= (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 update t1 set b= (select b from t2 where t1.a = t2.a);
@@ -602,7 +602,7 @@ select * from t1 where b = (select b from t2 where t1.a = t2.a);
 a	b
 2	12
 delete from t1 where b in (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from t1 where b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete from t1 where b = (select b from t2 where t1.a = t2.a);
@@ -628,7 +628,7 @@ a	b
 22	11
 2	12
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t12 where t11.a = t12.a);
-ERROR HY000: You can't specify target table 't12' for update in FROM clause
+ERROR HY000: Table 't12' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2 where t11.a = t2.a);
@@ -647,7 +647,7 @@ create table t3 (b int);
 insert into t2 values (1);
 insert into t3 values (1),(2);
 INSERT INTO t1 (x) VALUES ((SELECT x FROM t1));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t1 (x) VALUES ((SELECT b FROM t3));
 ERROR 21000: Subquery returns more than 1 row
 INSERT INTO t1 (x) VALUES ((SELECT a FROM t2));
@@ -697,7 +697,7 @@ insert into t3 values (1),(2);
 select * from t1;
 x	y
 replace into t1 (x, y) VALUES ((SELECT x FROM t1), (SELECT a+1 FROM t2));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 replace into t1 (x, y) VALUES ((SELECT a FROM t3), (SELECT a+1 FROM t2));
 ERROR 21000: Subquery returns more than 1 row
 replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2));
@@ -765,9 +765,9 @@ SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2);
 id
 2
 INSERT INTO t2 VALUES ((SELECT * FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t2 VALUES ((SELECT id FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 SELECT * FROM t2;
 id
 1

mysql-test/r/subselect_exists_to_in.result

@@ -583,7 +583,7 @@ a	b
 1	11
 2	12
 update t1 set b= (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t1 set b= (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 update t1 set b= (select b from t2 where t1.a = t2.a);
@@ -606,7 +606,7 @@ select * from t1 where b = (select b from t2 where t1.a = t2.a);
 a	b
 2	12
 delete from t1 where b in (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from t1 where b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete from t1 where b = (select b from t2 where t1.a = t2.a);
@@ -632,7 +632,7 @@ a	b
 22	11
 2	12
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t12 where t11.a = t12.a);
-ERROR HY000: You can't specify target table 't12' for update in FROM clause
+ERROR HY000: Table 't12' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2 where t11.a = t2.a);
@@ -651,7 +651,7 @@ create table t3 (b int);
 insert into t2 values (1);
 insert into t3 values (1),(2);
 INSERT INTO t1 (x) VALUES ((SELECT x FROM t1));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t1 (x) VALUES ((SELECT b FROM t3));
 ERROR 21000: Subquery returns more than 1 row
 INSERT INTO t1 (x) VALUES ((SELECT a FROM t2));
@@ -701,7 +701,7 @@ insert into t3 values (1),(2);
 select * from t1;
 x	y
 replace into t1 (x, y) VALUES ((SELECT x FROM t1), (SELECT a+1 FROM t2));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 replace into t1 (x, y) VALUES ((SELECT a FROM t3), (SELECT a+1 FROM t2));
 ERROR 21000: Subquery returns more than 1 row
 replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2));
@@ -769,9 +769,9 @@ SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2);
 id
 2
 INSERT INTO t2 VALUES ((SELECT * FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t2 VALUES ((SELECT id FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 SELECT * FROM t2;
 id
 1

mysql-test/r/subselect_no_mat.result

@@ -586,7 +586,7 @@ a	b
 1	11
 2	12
 update t1 set b= (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t1 set b= (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 update t1 set b= (select b from t2 where t1.a = t2.a);
@@ -609,7 +609,7 @@ select * from t1 where b = (select b from t2 where t1.a = t2.a);
 a	b
 2	12
 delete from t1 where b in (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from t1 where b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete from t1 where b = (select b from t2 where t1.a = t2.a);
@@ -635,7 +635,7 @@ a	b
 22	11
 2	12
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t12 where t11.a = t12.a);
-ERROR HY000: You can't specify target table 't12' for update in FROM clause
+ERROR HY000: Table 't12' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2 where t11.a = t2.a);
@@ -654,7 +654,7 @@ create table t3 (b int);
 insert into t2 values (1);
 insert into t3 values (1),(2);
 INSERT INTO t1 (x) VALUES ((SELECT x FROM t1));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t1 (x) VALUES ((SELECT b FROM t3));
 ERROR 21000: Subquery returns more than 1 row
 INSERT INTO t1 (x) VALUES ((SELECT a FROM t2));
@@ -704,7 +704,7 @@ insert into t3 values (1),(2);
 select * from t1;
 x	y
 replace into t1 (x, y) VALUES ((SELECT x FROM t1), (SELECT a+1 FROM t2));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 replace into t1 (x, y) VALUES ((SELECT a FROM t3), (SELECT a+1 FROM t2));
 ERROR 21000: Subquery returns more than 1 row
 replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2));
@@ -772,9 +772,9 @@ SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2);
 id
 2
 INSERT INTO t2 VALUES ((SELECT * FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t2 VALUES ((SELECT id FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 SELECT * FROM t2;
 id
 1

mysql-test/r/subselect_no_opts.result

@@ -582,7 +582,7 @@ a	b
 1	11
 2	12
 update t1 set b= (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t1 set b= (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 update t1 set b= (select b from t2 where t1.a = t2.a);
@@ -605,7 +605,7 @@ select * from t1 where b = (select b from t2 where t1.a = t2.a);
 a	b
 2	12
 delete from t1 where b in (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from t1 where b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete from t1 where b = (select b from t2 where t1.a = t2.a);
@@ -631,7 +631,7 @@ a	b
 22	11
 2	12
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t12 where t11.a = t12.a);
-ERROR HY000: You can't specify target table 't12' for update in FROM clause
+ERROR HY000: Table 't12' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2 where t11.a = t2.a);
@@ -650,7 +650,7 @@ create table t3 (b int);
 insert into t2 values (1);
 insert into t3 values (1),(2);
 INSERT INTO t1 (x) VALUES ((SELECT x FROM t1));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t1 (x) VALUES ((SELECT b FROM t3));
 ERROR 21000: Subquery returns more than 1 row
 INSERT INTO t1 (x) VALUES ((SELECT a FROM t2));
@@ -700,7 +700,7 @@ insert into t3 values (1),(2);
 select * from t1;
 x	y
 replace into t1 (x, y) VALUES ((SELECT x FROM t1), (SELECT a+1 FROM t2));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 replace into t1 (x, y) VALUES ((SELECT a FROM t3), (SELECT a+1 FROM t2));
 ERROR 21000: Subquery returns more than 1 row
 replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2));
@@ -768,9 +768,9 @@ SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2);
 id
 2
 INSERT INTO t2 VALUES ((SELECT * FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t2 VALUES ((SELECT id FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 SELECT * FROM t2;
 id
 1

mysql-test/r/subselect_no_scache.result

@@ -585,7 +585,7 @@ a	b
 1	11
 2	12
 update t1 set b= (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t1 set b= (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 update t1 set b= (select b from t2 where t1.a = t2.a);
@@ -608,7 +608,7 @@ select * from t1 where b = (select b from t2 where t1.a = t2.a);
 a	b
 2	12
 delete from t1 where b in (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from t1 where b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete from t1 where b = (select b from t2 where t1.a = t2.a);
@@ -634,7 +634,7 @@ a	b
 22	11
 2	12
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t12 where t11.a = t12.a);
-ERROR HY000: You can't specify target table 't12' for update in FROM clause
+ERROR HY000: Table 't12' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2 where t11.a = t2.a);
@@ -653,7 +653,7 @@ create table t3 (b int);
 insert into t2 values (1);
 insert into t3 values (1),(2);
 INSERT INTO t1 (x) VALUES ((SELECT x FROM t1));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t1 (x) VALUES ((SELECT b FROM t3));
 ERROR 21000: Subquery returns more than 1 row
 INSERT INTO t1 (x) VALUES ((SELECT a FROM t2));
@@ -703,7 +703,7 @@ insert into t3 values (1),(2);
 select * from t1;
 x	y
 replace into t1 (x, y) VALUES ((SELECT x FROM t1), (SELECT a+1 FROM t2));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 replace into t1 (x, y) VALUES ((SELECT a FROM t3), (SELECT a+1 FROM t2));
 ERROR 21000: Subquery returns more than 1 row
 replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2));
@@ -771,9 +771,9 @@ SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2);
 id
 2
 INSERT INTO t2 VALUES ((SELECT * FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t2 VALUES ((SELECT id FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 SELECT * FROM t2;
 id
 1

mysql-test/r/subselect_no_semijoin.result

@@ -582,7 +582,7 @@ a	b
 1	11
 2	12
 update t1 set b= (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t1 set b= (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 update t1 set b= (select b from t2 where t1.a = t2.a);
@@ -605,7 +605,7 @@ select * from t1 where b = (select b from t2 where t1.a = t2.a);
 a	b
 2	12
 delete from t1 where b in (select b from t1);
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete from t1 where b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete from t1 where b = (select b from t2 where t1.a = t2.a);
@@ -631,7 +631,7 @@ a	b
 22	11
 2	12
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t12 where t11.a = t12.a);
-ERROR HY000: You can't specify target table 't12' for update in FROM clause
+ERROR HY000: Table 't12' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2);
 ERROR 21000: Subquery returns more than 1 row
 delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2 where t11.a = t2.a);
@@ -650,7 +650,7 @@ create table t3 (b int);
 insert into t2 values (1);
 insert into t3 values (1),(2);
 INSERT INTO t1 (x) VALUES ((SELECT x FROM t1));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t1 (x) VALUES ((SELECT b FROM t3));
 ERROR 21000: Subquery returns more than 1 row
 INSERT INTO t1 (x) VALUES ((SELECT a FROM t2));
@@ -700,7 +700,7 @@ insert into t3 values (1),(2);
 select * from t1;
 x	y
 replace into t1 (x, y) VALUES ((SELECT x FROM t1), (SELECT a+1 FROM t2));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 replace into t1 (x, y) VALUES ((SELECT a FROM t3), (SELECT a+1 FROM t2));
 ERROR 21000: Subquery returns more than 1 row
 replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2));
@@ -768,9 +768,9 @@ SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2);
 id
 2
 INSERT INTO t2 VALUES ((SELECT * FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 INSERT INTO t2 VALUES ((SELECT id FROM t2));
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 SELECT * FROM t2;
 id
 1

mysql-test/r/view.result

@@ -205,7 +205,7 @@ ERROR 42S02: Unknown table 'v100'
 drop view t1;
 ERROR HY000: 'test.t1' is not VIEW
 drop table v1;
-ERROR 42S02: Unknown table 'test.v1'
+ERROR 42S02: 'test.v1' is a view
 drop view v1,v2;
 drop table t1;
 create table t1 (a int);
@@ -931,13 +931,13 @@ ERROR HY000: The definition of table 'v1' prevents operation UPDATE on table 'v2
 update v2 set col1 = (select max(col1) from t1);
 ERROR HY000: The definition of table 'v2' prevents operation UPDATE on table 'v2'.
 update v2 set col1 = (select max(col1) from v2);
-ERROR HY000: You can't specify target table 'v2' for update in FROM clause
+ERROR HY000: Table 'v2' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update v2,t2 set v2.col1 = (select max(col1) from v1) where v2.col1 = t2.col1;
 ERROR HY000: The definition of table 'v1' prevents operation UPDATE on table 'v2'.
 update t1,t2 set t1.col1 = (select max(col1) from v1) where t1.col1 = t2.col1;
 ERROR HY000: The definition of table 'v1' prevents operation UPDATE on table 't1'.
 update v1,t2 set v1.col1 = (select max(col1) from v1) where v1.col1 = t2.col1;
-ERROR HY000: You can't specify target table 'v1' for update in FROM clause
+ERROR HY000: Table 'v1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t2,v2 set v2.col1 = (select max(col1) from v1) where v2.col1 = t2.col1;
 ERROR HY000: The definition of table 'v1' prevents operation UPDATE on table 't2'.
 update t2,t1 set t1.col1 = (select max(col1) from v1) where t1.col1 = t2.col1;
@@ -947,17 +947,17 @@ ERROR HY000: The definition of table 'v1' prevents operation UPDATE on table 't2
 update v2,t2 set v2.col1 = (select max(col1) from t1) where v2.col1 = t2.col1;
 ERROR HY000: The definition of table 'v2' prevents operation UPDATE on table 'v2'.
 update t1,t2 set t1.col1 = (select max(col1) from t1) where t1.col1 = t2.col1;
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update v1,t2 set v1.col1 = (select max(col1) from t1) where v1.col1 = t2.col1;
 ERROR HY000: The definition of table 'v1' prevents operation UPDATE on table 'v1'.
 update t2,v2 set v2.col1 = (select max(col1) from t1) where v2.col1 = t2.col1;
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t2,t1 set t1.col1 = (select max(col1) from t1) where t1.col1 = t2.col1;
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t2,v1 set v1.col1 = (select max(col1) from t1) where v1.col1 = t2.col1;
-ERROR HY000: You can't specify target table 't2' for update in FROM clause
+ERROR HY000: Table 't2' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update v2,t2 set v2.col1 = (select max(col1) from v2) where v2.col1 = t2.col1;
-ERROR HY000: You can't specify target table 'v2' for update in FROM clause
+ERROR HY000: Table 'v2' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 update t1,t2 set t1.col1 = (select max(col1) from v2) where t1.col1 = t2.col1;
 ERROR HY000: The definition of table 'v2' prevents operation UPDATE on table 't1'.
 update v1,t2 set v1.col1 = (select max(col1) from v2) where v1.col1 = t2.col1;
@@ -975,27 +975,27 @@ ERROR HY000: The definition of table 'v3' prevents operation UPDATE on table 'v3
 update v3 set v3.col1 = (select max(col1) from v2);
 ERROR HY000: The definition of table 'v2' prevents operation UPDATE on table 'v3'.
 update v3 set v3.col1 = (select max(col1) from v3);
-ERROR HY000: You can't specify target table 'v3' for update in FROM clause
+ERROR HY000: Table 'v3' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 delete from v2 where col1 = (select max(col1) from v1);
 ERROR HY000: The definition of table 'v1' prevents operation DELETE on table 'v2'.
 delete from v2 where col1 = (select max(col1) from t1);
 ERROR HY000: The definition of table 'v2' prevents operation DELETE on table 'v2'.
 delete from v2 where col1 = (select max(col1) from v2);
-ERROR HY000: You can't specify target table 'v2' for update in FROM clause
+ERROR HY000: Table 'v2' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete v2 from v2,t2 where (select max(col1) from v1) > 0 and v2.col1 = t2.col1;
 ERROR HY000: The definition of table 'v1' prevents operation DELETE on table 'v2'.
 delete t1 from t1,t2 where (select max(col1) from v1) > 0 and t1.col1 = t2.col1;
 ERROR HY000: The definition of table 'v1' prevents operation DELETE on table 't1'.
 delete v1 from v1,t2 where (select max(col1) from v1) > 0 and v1.col1 = t2.col1;
-ERROR HY000: You can't specify target table 'v1' for update in FROM clause
+ERROR HY000: Table 'v1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete v2 from v2,t2 where (select max(col1) from t1) > 0 and v2.col1 = t2.col1;
 ERROR HY000: The definition of table 'v2' prevents operation DELETE on table 'v2'.
 delete t1 from t1,t2 where (select max(col1) from t1) > 0 and t1.col1 = t2.col1;
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete v1 from v1,t2 where (select max(col1) from t1) > 0 and v1.col1 = t2.col1;
 ERROR HY000: The definition of table 'v1' prevents operation DELETE on table 'v1'.
 delete v2 from v2,t2 where (select max(col1) from v2) > 0 and v2.col1 = t2.col1;
-ERROR HY000: You can't specify target table 'v2' for update in FROM clause
+ERROR HY000: Table 'v2' is specified twice, both as a target for 'DELETE' and as a separate source for data
 delete t1 from t1,t2 where (select max(col1) from v2) > 0 and t1.col1 = t2.col1;
 ERROR HY000: The definition of table 'v2' prevents operation DELETE on table 't1'.
 delete v1 from v1,t2 where (select max(col1) from v2) > 0 and v1.col1 = t2.col1;
@@ -1009,15 +1009,15 @@ ERROR HY000: The definition of table 'v1' prevents operation INSERT on table 'v2
 insert into v2 values ((select max(col1) from t1));
 ERROR HY000: The definition of table 'v2' prevents operation INSERT on table 'v2'.
 insert into t1 values ((select max(col1) from t1));
-ERROR HY000: You can't specify target table 't1' for update in FROM clause
+ERROR HY000: Table 't1' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into v2 values ((select max(col1) from t1));
 ERROR HY000: The definition of table 'v2' prevents operation INSERT on table 'v2'.
 insert into v2 values ((select max(col1) from v2));
-ERROR HY000: You can't specify target table 'v2' for update in FROM clause
+ERROR HY000: Table 'v2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into t1 values ((select max(col1) from v2));
 ERROR HY000: The definition of table 'v2' prevents operation INSERT on table 't1'.
 insert into v2 values ((select max(col1) from v2));
-ERROR HY000: You can't specify target table 'v2' for update in FROM clause
+ERROR HY000: Table 'v2' is specified twice, both as a target for 'INSERT' and as a separate source for data
 insert into v3 (col1) values ((select max(col1) from v1));
 ERROR HY000: The definition of table 'v1' prevents operation INSERT on table 'v3'.
 insert into v3 (col1) values ((select max(col1) from t1));

mysql-test/t/create_or_replace.test

@@ -4,7 +4,7 @@
 
 --source include/have_innodb.inc
 --disable_warnings
-drop table if exists t1,t2;
+drop table if exists t1,t2,t3;
 --enable_warnings
 
 #
@@ -90,10 +90,21 @@ SHOW CREATE TABLE t1;
 DROP TABLE t1;
 CREATE TEMPORARY TABLE t1 AS SELECT a FROM t2;
 CREATE TEMPORARY TABLE IF NOT EXISTS t1(a int, b int) SELECT 1,2 FROM t2;
-create or replace table t1 as select 1;
-show create table t1;
 DROP TABLE t1;
 
+CREATE TABLE t1 (a int);
+CREATE OR REPLACE TABLE t1 AS SELECT 1;
+SHOW CREATE TABLE t1;
+DROP TABLE t1;
+
+create table t1 (a int);
+--error ER_UPDATE_TABLE_USED
+create or replace table t1 as select * from t1;
+--error ER_UPDATE_TABLE_USED
+create or replace table t1 as select a from (select a from t1) as t3;
+--error ER_UPDATE_TABLE_USED
+create or replace table t1 as select a from t2 where t2.a in (select a from t1);
+drop table t1;
 
 --echo #
 --echo # Testing with normal tables
@@ -156,6 +167,14 @@ SELECT * FROM t1 as t1_read;
 DROP TABLE t1;
 UNLOCK TABLES;
 
+CREATE OR REPLACE TABLE t1 (a int);
+LOCK TABLE t1 WRITE;
+CREATE OR REPLACE TABLE t1 AS SELECT 1;
+SELECT * from t1;
+--error ER_TABLE_NOT_LOCKED
+SELECT * from t2;
+DROP TABLE t1;
+
 --echo #
 --echo # Test also with InnoDB (transactional engine)
 --echo #
@@ -201,6 +220,24 @@ unlock tables;
 show create table t1;
 drop table t1;
 
+create or replace table t1 like t2;
+--error ER_NONUNIQ_TABLE
+create or replace table t1 like t1;
+drop table t1;
+
+CREATE TEMPORARY TABLE t1 like t2;
+--error ER_NONUNIQ_TABLE
+CREATE OR REPLACE TABLE t1 like t1;
+--error ER_NONUNIQ_TABLE
+CREATE OR REPLACE TABLE t1 like t1;
+drop table t1;
+
+CREATE TEMPORARY TABLE t1 like t2;
+CREATE OR REPLACE TEMPORARY TABLE t3 like t1;
+--error ER_NONUNIQ_TABLE
+CREATE OR REPLACE TEMPORARY TABLE t3 like t3;
+drop table t1,t3;
+
 --echo #
 --echo # Test with prepared statements
 --echo #
@@ -222,9 +259,9 @@ drop table t1;
 
 create view t1 as select 1;
 create table if not exists t1 (a int);
---error ER_BAD_TABLE_ERROR
+--error ER_IT_IS_A_VIEW
 create or replace table t1 (a int);
---error ER_BAD_TABLE_ERROR
+--error ER_IT_IS_A_VIEW
 drop table t1;
 drop view t1;
 

mysql-test/t/view.test

@@ -141,7 +141,7 @@ drop view v100;
 drop view t1;
 
 # try to drop VIEW with DROP TABLE
--- error ER_BAD_TABLE_ERROR
+-- error ER_IT_IS_A_VIEW
 drop table v1;
 
 # try to drop table with DROP VIEW

sql/share/errmsg-utf8.txt

@@ -2140,13 +2140,9 @@ ER_INSERT_INFO
         spa "Registros: %ld  Duplicados: %ld  Peligros: %ld"
         swe "Rader: %ld  Dubletter: %ld  Varningar: %ld"
         ukr "Записів: %ld  Дублікатів: %ld  Застережень: %ld"
-ER_UPDATE_TABLE_USED  
-        eng "You can't specify target table '%-.192s' for update in FROM clause"
-        ger "Die Verwendung der zu aktualisierenden Zieltabelle '%-.192s' ist in der FROM-Klausel nicht zulässig."
-        jpn "FROM句にある表 '%-.192s' はUPDATEの対象にできません。"
-        rus "Не допускается указание таблицы '%-.192s' в списке таблиц FROM для внесения в нее изменений"
-        swe "INSERT-table '%-.192s' får inte finnas i FROM tabell-listan"
-        ukr "Таблиця '%-.192s' що змінюється не дозволена у переліку таблиць FROM"
+ER_UPDATE_TABLE_USED
+        eng "Table '%-.192s' is specified twice, both as a target for '%s' and as a separate source for data"
+        swe "Table '%-.192s' är använd två gånger. Både för '%s' och för att hämta data"
 ER_NO_SUCH_THREAD  
         cze "Neznámá identifikace threadu: %lu"
         dan "Ukendt tråd id: %lu"
@@ -7089,3 +7085,5 @@ ER_CHANGE_SLAVE_PARALLEL_THREADS_ACTIVE
 	eng "Cannot change @@slave_parallel_threads while another change is in progress"
 ER_PRIOR_COMMIT_FAILED
 	eng "Commit failed due to failure of an earlier commit on which this one depends"
+ER_IT_IS_A_VIEW 42S02
+        eng "'%-.192s' is a view"

sql/sql_base.cc

@@ -1483,7 +1483,7 @@ void update_non_unique_table_error(TABLE_LIST *update,
       return;
     }
   }
-  my_error(ER_UPDATE_TABLE_USED, MYF(0), update->alias);
+  my_error(ER_UPDATE_TABLE_USED, MYF(0), update->alias, operation);
 }
 
 
@@ -2839,6 +2839,10 @@ unlink_all_closed_tables(THD *thd, MYSQL_LOCK *lock, size_t reopen_count)
       m_locked_tables_count--;
     }
   }
+
+  /* If no tables left, do an automatic UNLOCK TABLES */
+  if (thd->lock && thd->lock->table_count == 0)
+    unlock_locked_tables(thd);
 }
 
 

sql/sql_db.cc

@@ -829,7 +829,7 @@ bool mysql_rm_db(THD *thd,char *db,bool if_exists, bool silent)
   thd->push_internal_handler(&err_handler);
   if (!thd->killed &&
       !(tables &&
-        mysql_rm_table_no_locks(thd, tables, true, false, true, true)))
+        mysql_rm_table_no_locks(thd, tables, true, false, true, true, false)))
   {
     /*
       We temporarily disable the binary log while dropping the objects

sql/sql_load.cc

@@ -258,7 +258,8 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
   */
   if (unique_table(thd, table_list, table_list->next_global, 0))
   {
-    my_error(ER_UPDATE_TABLE_USED, MYF(0), table_list->table_name);
+    my_error(ER_UPDATE_TABLE_USED, MYF(0), table_list->table_name,
+             "LOAD DATA");
     DBUG_RETURN(TRUE);
   }
 

sql/sql_parse.cc

@@ -2957,8 +2957,24 @@ case SQLCOM_PREPARE:
         /* Got error or warning. Set res to 1 if error */
         if (!(res= thd->is_error()))
           my_ok(thd);                           // CREATE ... IF NOT EXISTS
+        goto end_with_restore_list;
+      }
+
+      /* Ensure we don't try to create something from which we select from */
+      if ((create_info.options & HA_LEX_CREATE_REPLACE) &&
+          !create_info.tmp_table())
+      {
+        TABLE_LIST *duplicate;
+        if ((duplicate= unique_table(thd, lex->query_tables,
+                                     lex->query_tables->next_global,
+                                     0)))
+        {
+          update_non_unique_table_error(lex->query_tables, "CREATE",
+                                        duplicate);
+          res= TRUE;
+          goto end_with_restore_list;
+        }
       }
-      else
       {
         /*
           Remove target table from main select and name resolution

sql/sql_table.cc

@@ -2103,7 +2103,7 @@ bool mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists,
   /* mark for close and remove all cached entries */
   thd->push_internal_handler(&err_handler);
   error= mysql_rm_table_no_locks(thd, tables, if_exists, drop_temporary,
-                                 false, false);
+                                 false, false, false);
   thd->pop_internal_handler();
 
   if (error)
@@ -2168,6 +2168,8 @@ static uint32 comment_length(THD *thd, uint32 comment_pos,
   @param  drop_view       Allow to delete VIEW .frm
   @param  dont_log_query  Don't write query to log files. This will also not
                           generate warnings if the handler files doesn't exists
+  @param  dont_free_locks Don't do automatic UNLOCK TABLE if no more locked
+                          tables
 
   @retval  0  ok
   @retval  1  Error
@@ -2190,7 +2192,8 @@ static uint32 comment_length(THD *thd, uint32 comment_pos,
 
 int mysql_rm_table_no_locks(THD *thd, TABLE_LIST *tables, bool if_exists,
                             bool drop_temporary, bool drop_view,
-                            bool dont_log_query)
+                            bool dont_log_query,
+                            bool dont_free_locks)
 {
   TABLE_LIST *table;
   char path[FN_REFLEN + 1], wrong_tables_buff[160], *alias= NULL;
@@ -2204,6 +2207,8 @@ int mysql_rm_table_no_locks(THD *thd, TABLE_LIST *tables, bool if_exists,
   bool trans_tmp_table_deleted= 0, non_trans_tmp_table_deleted= 0;
   bool non_tmp_table_deleted= 0;
   bool is_drop_tmp_if_exists_added= 0;
+  bool one_table= tables->next_local == 0;
+  bool was_view= 0;
   String built_query;
   String built_trans_tmp_query, built_non_trans_tmp_query;
   DBUG_ENTER("mysql_rm_table_no_locks");
@@ -2413,7 +2418,7 @@ int mysql_rm_table_no_locks(THD *thd, TABLE_LIST *tables, bool if_exists,
     DEBUG_SYNC(thd, "rm_table_no_locks_before_delete_table");
     error= 0;
     if ((drop_temporary || !ha_table_exists(thd, db, alias, &table_type) ||
-         (!drop_view && table_type == view_pseudo_hton)))
+         (!drop_view && (was_view= (table_type == view_pseudo_hton)))))
     {
       /*
         One of the following cases happened:
@@ -2544,7 +2549,10 @@ int mysql_rm_table_no_locks(THD *thd, TABLE_LIST *tables, bool if_exists,
 err:
   if (wrong_tables.length())
   {
-    if (!foreign_key_error)
+    if (one_table && was_view)
+      my_printf_error(ER_IT_IS_A_VIEW, ER(ER_IT_IS_A_VIEW), MYF(0),
+                      wrong_tables.c_ptr_safe());
+    else if (!foreign_key_error)
       my_printf_error(ER_BAD_TABLE_ERROR, ER(ER_BAD_TABLE_ERROR), MYF(0),
                       wrong_tables.c_ptr_safe());
     else
@@ -2610,7 +2618,8 @@ err:
     */
     if (thd->locked_tables_mode)
     {
-      if (thd->lock && thd->lock->table_count == 0 && non_temp_tables_count > 0)
+      if (thd->lock && thd->lock->table_count == 0 &&
+          non_temp_tables_count > 0 && !dont_free_locks)
       {
         thd->locked_tables_list.unlock_locked_tables(thd);
         goto end;
@@ -4608,8 +4617,8 @@ int create_table_impl(THD *thd,
           call to open_and_lock_tables() when we are using LOCK TABLES.
         */
         (void) trans_rollback_stmt(thd);
-        /* Remove normal table without logging */
-        if (mysql_rm_table_no_locks(thd, &table_list, 0, 0, 0, 1))
+        /* Remove normal table without logging. Keep tables locked */
+        if (mysql_rm_table_no_locks(thd, &table_list, 0, 0, 0, 1, 1))
           goto err;
         /*
           The test of query_tables is to ensure we have any tables in the
@@ -4618,6 +4627,11 @@ int create_table_impl(THD *thd,
         if (thd->lex->query_tables &&
             restart_trans_for_tables(thd, thd->lex->query_tables->next_global))
           goto err;
+        /*
+          We have to log this query, even if it failed later to ensure the
+          drop is done.
+        */
+        thd->variables.option_bits|= OPTION_KEEP_LOG;
       }
       else if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS)
         goto warn;
@@ -5084,6 +5098,18 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table,
     res= thd->is_error();
     goto err;
   }
+  /* Ensure we don't try to create something from which we select from */
+  if ((create_info->options & HA_LEX_CREATE_REPLACE) &&
+      !create_info->tmp_table())
+  {
+    TABLE_LIST *duplicate;
+    if ((duplicate= unique_table(thd, table, src_table, 0)))
+    {
+      update_non_unique_table_error(src_table, "CREATE", duplicate);
+      goto err;
+    }
+  }
+
   src_table->table->use_all_columns();
 
   DEBUG_SYNC(thd, "create_table_like_after_open");

sql/sql_table.h

@@ -238,7 +238,7 @@ bool mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists,
                     my_bool drop_temporary);
 int mysql_rm_table_no_locks(THD *thd, TABLE_LIST *tables, bool if_exists,
                             bool drop_temporary, bool drop_view,
-                            bool log_query);
+                            bool log_query, bool dont_free_locks);
 bool quick_rm_table(THD *thd, handlerton *base, const char *db,
                     const char *table_name, uint flags);
 void close_cached_table(THD *thd, TABLE *table);