MDEV-12874 UPDATE statements with the same source and target

update engine tests

mysql-test/suite/engines/funcs/r/sq_error.result

@@ -15,8 +15,6 @@ ERROR 42000: This version of MariaDB doesn't yet support 'LIMIT & IN/ALL/ANY/SOM
 SELECT * FROM t1 WHERE c1 = (SELECT c1 FROM t2);
 ERROR 21000: Subquery returns more than 1 row
 UPDATE t1 SET c2 = (SELECT MAX(c1) FROM t2);
-UPDATE t1 SET c1 = (SELECT MAX(c1) FROM t1);
-ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 DROP TABLE t1;
 DROP TABLE t2;
 CREATE TABLE t1 (c1 INT, c2 VARCHAR(100),c3 FLOAT);
@@ -34,8 +32,6 @@ ERROR 42000: This version of MariaDB doesn't yet support 'LIMIT & IN/ALL/ANY/SOM
 SELECT * FROM t1 WHERE c1 = (SELECT c1 FROM t2);
 ERROR 21000: Subquery returns more than 1 row
 UPDATE t1 SET c2 = (SELECT MAX(c1) FROM t2);
-UPDATE t1 SET c1 = (SELECT MAX(c1) FROM t1);
-ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 DROP TABLE t1;
 DROP TABLE t2;
 CREATE TABLE t1 (c1 INT, c2 BINARY(100),c3 FLOAT);
@@ -53,8 +49,6 @@ ERROR 42000: This version of MariaDB doesn't yet support 'LIMIT & IN/ALL/ANY/SOM
 SELECT * FROM t1 WHERE c1 = (SELECT c1 FROM t2);
 ERROR 21000: Subquery returns more than 1 row
 UPDATE t1 SET c2 = (SELECT MAX(c1) FROM t2);
-UPDATE t1 SET c1 = (SELECT MAX(c1) FROM t1);
-ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 DROP TABLE t1;
 DROP TABLE t2;
 CREATE TABLE t1 (c1 INT, c2 VARBINARY(100),c3 FLOAT);
@@ -72,7 +66,5 @@ ERROR 42000: This version of MariaDB doesn't yet support 'LIMIT & IN/ALL/ANY/SOM
 SELECT * FROM t1 WHERE c1 = (SELECT c1 FROM t2);
 ERROR 21000: Subquery returns more than 1 row
 UPDATE t1 SET c2 = (SELECT MAX(c1) FROM t2);
-UPDATE t1 SET c1 = (SELECT MAX(c1) FROM t1);
-ERROR HY000: Table 't1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 DROP TABLE t1;
 DROP TABLE t2;

mysql-test/suite/engines/funcs/t/sq_error.test

@@ -19,8 +19,6 @@ SELECT (SELECT c1, c2 FROM t2) FROM t1;
 --error 1242
 SELECT * FROM t1 WHERE c1 = (SELECT c1 FROM t2);
 UPDATE t1 SET c2 = (SELECT MAX(c1) FROM t2);
---error 1093
-UPDATE t1 SET c1 = (SELECT MAX(c1) FROM t1);
 DROP TABLE t1;
 DROP TABLE t2;
 CREATE TABLE t1 (c1 INT, c2 VARCHAR(100),c3 FLOAT);
@@ -38,8 +36,6 @@ SELECT (SELECT c1, c2 FROM t2) FROM t1;
 --error 1242
 SELECT * FROM t1 WHERE c1 = (SELECT c1 FROM t2);
 UPDATE t1 SET c2 = (SELECT MAX(c1) FROM t2);
---error 1093
-UPDATE t1 SET c1 = (SELECT MAX(c1) FROM t1);
 DROP TABLE t1;
 DROP TABLE t2;
 CREATE TABLE t1 (c1 INT, c2 BINARY(100),c3 FLOAT);
@@ -57,8 +53,6 @@ SELECT (SELECT c1, c2 FROM t2) FROM t1;
 --error 1242
 SELECT * FROM t1 WHERE c1 = (SELECT c1 FROM t2);
 UPDATE t1 SET c2 = (SELECT MAX(c1) FROM t2);
---error 1093
-UPDATE t1 SET c1 = (SELECT MAX(c1) FROM t1);
 DROP TABLE t1;
 DROP TABLE t2;
 CREATE TABLE t1 (c1 INT, c2 VARBINARY(100),c3 FLOAT);
@@ -76,8 +70,6 @@ SELECT (SELECT c1, c2 FROM t2) FROM t1;
 --error 1242
 SELECT * FROM t1 WHERE c1 = (SELECT c1 FROM t2);
 UPDATE t1 SET c2 = (SELECT MAX(c1) FROM t2);
---error 1093
-UPDATE t1 SET c1 = (SELECT MAX(c1) FROM t1);
 DROP TABLE t1;
 DROP TABLE t2;
 

mysql-test/suite/engines/iuds/r/update_delete_number.result

@@ -980,7 +980,6 @@ drop table mt1, mt2, mt3;
 create table mt1 (col1 int);
 create table mt2 (col1 int);
 update mt1,mt2 set mt1.col1 = (select max(col1) from mt1) where mt1.col1 = mt2.col1;
-ERROR HY000: Table 'mt1' is specified twice, both as a target for 'UPDATE' and as a separate source for data
 delete mt1 from mt1,mt2 where mt1.col1 < (select max(col1) from mt1) and mt1.col1 = mt2.col1;
 ERROR HY000: Table 'mt1' is specified twice, both as a target for 'DELETE' and as a separate source for data
 drop table mt1,mt2;

mysql-test/suite/engines/iuds/t/update_delete_number.test

@@ -495,7 +495,6 @@ drop table mt1, mt2, mt3;
 # multi* unique updating table check
 create table mt1 (col1 int);
 create table mt2 (col1 int);
--- error ER_UPDATE_TABLE_USED
 update mt1,mt2 set mt1.col1 = (select max(col1) from mt1) where mt1.col1 = mt2.col1;
 -- error ER_UPDATE_TABLE_USED
 delete mt1 from mt1,mt2 where mt1.col1 < (select max(col1) from mt1) and mt1.col1 = mt2.col1;