Merge 10.3 into 10.4

13 files changed, 545 insertions, 97 deletions

diff --git a/mysql-test/main/alter_table.result b/mysql-test/main/alter_table.result
index 908435710a3..3c59b83f2ce 100644
--- a/mysql-test/main/alter_table.result
+++ b/mysql-test/main/alter_table.result
@@ -2529,6 +2529,23 @@ ALTER TABLE t1 ALTER COLUMN k1 SET DEFAULT (SELECT 1 FROM t2 limit 1);
 ERROR HY000: Function or expression 'select ...' cannot be used in the DEFAULT clause of `k1`
 DROP TABLE t1,t2;
 #
+# MDEV-25403 ALTER TABLE wrongly checks for field's default value if AFTER is used
+#
+create table t1(t int, d date not null);
+insert into t1 values (1,'2001-1-1');
+set sql_mode = "no_zero_date";
+alter table t1 change d d date not null after t, add i int;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `t` int(11) DEFAULT NULL,
+  `d` date NOT NULL,
+  `i` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+alter table t1 add x date not null;
+ERROR 22007: Incorrect date value: '0000-00-00' for column `test`.`t1`.`x` at row 1
+drop table t1;
+#
 # End of 10.2 tests
 #
 #
diff --git a/mysql-test/main/alter_table.test b/mysql-test/main/alter_table.test
index ce461b2fe46..fa931fcadbf 100644
--- a/mysql-test/main/alter_table.test
+++ b/mysql-test/main/alter_table.test
@@ -2051,6 +2051,18 @@ ALTER TABLE t1 ALTER COLUMN k1 SET DEFAULT (SELECT 1 FROM t2 limit 1);
 DROP TABLE t1,t2;
 
 --echo #
+--echo # MDEV-25403 ALTER TABLE wrongly checks for field's default value if AFTER is used
+--echo #
+create table t1(t int, d date not null);
+insert into t1 values (1,'2001-1-1');
+set sql_mode = "no_zero_date";
+alter table t1 change d d date not null after t, add i int;
+show create table t1;
+--error ER_TRUNCATED_WRONG_VALUE
+alter table t1 add x date not null;
+drop table t1;
+
+--echo #
 --echo # End of 10.2 tests
 --echo #
 
diff --git a/mysql-test/main/join_outer.result b/mysql-test/main/join_outer.result
index c92b8e6115b..b7fcb55e4fe 100644
--- a/mysql-test/main/join_outer.result
+++ b/mysql-test/main/join_outer.result
@@ -2687,6 +2687,77 @@ id	timestamp	modifiedBy	id	REV	REVTYPE	profile_id	id	REV	person_id	id	REV
 DROP TABLE t1,t2,t3,t4;
 # end of 10.1 tests
 #
+# MDEV-25362: name resolution for subqueries in ON expressions
+#
+create table t1 (a int, b int);
+create table t2 (c int, d int);
+create table t3 (e int, f int);
+create table t4 (g int, h int);
+explain
+select *
+from
+t1 left join
+(t2
+join
+t3 on
+(t3.f=t1.a)
+) on (t2.c=t1.a );
+ERROR 42S22: Unknown column 't1.a' in 'on clause'
+explain
+select *
+from
+t1 left join
+(t2
+join
+t3 on
+(t3.f=(select max(g) from t4 where t4.h=t1.a))
+) on (t2.c=t1.a );
+ERROR 42S22: Unknown column 't1.a' in 'where clause'
+drop table t1,t2,t3,t4;
+create table t1 (a int);
+insert into t1 values (1),(2);
+create table t2 (b int);
+insert into t2 values (1),(2);
+create table t3 (c int);
+insert into t3 values (1),(2);
+select * from ( select * from t1 left join t2
+on b in (select x from t3 as sq1)
+) as sq2;
+ERROR 42S22: Unknown column 'x' in 'field list'
+drop table t1,t2,t3;
+# end of 10.2 tests
+#
+# MDEV-22866: Crash in join optimizer with constant outer join nest
+#
+CREATE TABLE t1 (a INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+CREATE TABLE t2 (b INT) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (3),(4);
+CREATE TABLE t3 (c INT, KEY(c)) ENGINE=MyISAM;
+CREATE TABLE t4 (d INT, KEY(d)) ENGINE=MyISAM;
+INSERT INTO t4 VALUES (5),(6);
+CREATE TABLE t5 (e INT) ENGINE=MyISAM;
+INSERT INTO t5 VALUES (7),(8);
+CREATE TABLE t6 (f INT) ENGINE=MyISAM;
+INSERT INTO t6 VALUES (9),(10);
+SELECT *
+FROM
+t1
+LEFT JOIN (
+t2 LEFT JOIN (
+t3 JOIN
+t4 ON t3.c = t4.d and t3.c >2 and t3.c<0
+) ON t2.b >= t4.d
+) ON t1.a <= t2.b
+LEFT JOIN t5 ON t2.b = t5.e
+LEFT JOIN t6 ON t3.c = t6.f;
+a	b	c	d	e	f
+1	3	NULL	NULL	NULL	NULL
+1	4	NULL	NULL	NULL	NULL
+2	3	NULL	NULL	NULL	NULL
+2	4	NULL	NULL	NULL	NULL
+drop table t1,t2,t3,t4,t5,t6;
+#
 # MDEV-17518: Range optimization doesn't use ON expressions from nested outer joins
 #
 create table t1(a int);
@@ -2754,35 +2825,5 @@ WHERE t3.pk IN (2);
 1
 drop view v4;
 drop table t1,t2,t3,t4;
+# end of 10.3 tests
 SET optimizer_switch=@org_optimizer_switch;
-#
-# MDEV-22866: Crash in join optimizer with constant outer join nest
-#
-CREATE TABLE t1 (a INT) ENGINE=MyISAM;
-INSERT INTO t1 VALUES (1),(2);
-CREATE TABLE t2 (b INT) ENGINE=MyISAM;
-INSERT INTO t2 VALUES (3),(4);
-CREATE TABLE t3 (c INT, KEY(c)) ENGINE=MyISAM;
-CREATE TABLE t4 (d INT, KEY(d)) ENGINE=MyISAM;
-INSERT INTO t4 VALUES (5),(6);
-CREATE TABLE t5 (e INT) ENGINE=MyISAM;
-INSERT INTO t5 VALUES (7),(8);
-CREATE TABLE t6 (f INT) ENGINE=MyISAM;
-INSERT INTO t6 VALUES (9),(10);
-SELECT *
-FROM
-t1
-LEFT JOIN (
-t2 LEFT JOIN (
-t3 JOIN
-t4 ON t3.c = t4.d and t3.c >2 and t3.c<0
-) ON t2.b >= t4.d
-) ON t1.a <= t2.b
-LEFT JOIN t5 ON t2.b = t5.e
-LEFT JOIN t6 ON t3.c = t6.f;
-a	b	c	d	e	f
-1	3	NULL	NULL	NULL	NULL
-2	3	NULL	NULL	NULL	NULL
-1	4	NULL	NULL	NULL	NULL
-2	4	NULL	NULL	NULL	NULL
-drop table t1,t2,t3,t4,t5,t6;
diff --git a/mysql-test/main/join_outer.test b/mysql-test/main/join_outer.test
index f835d8af5a8..82c7b265b56 100644
--- a/mysql-test/main/join_outer.test
+++ b/mysql-test/main/join_outer.test
@@ -2192,6 +2192,91 @@ DROP TABLE t1,t2,t3,t4;
 --echo # end of 10.1 tests
 
 --echo #
+--echo # MDEV-25362: name resolution for subqueries in ON expressions
+--echo #
+
+create table t1 (a int, b int);
+create table t2 (c int, d int);
+create table t3 (e int, f int);
+create table t4 (g int, h int);
+
+--error ER_BAD_FIELD_ERROR
+explain
+select *
+from
+  t1 left join
+   (t2
+    join
+    t3 on
+    (t3.f=t1.a)
+   ) on (t2.c=t1.a );
+
+# This must produce an error:
+--error ER_BAD_FIELD_ERROR
+explain
+select *
+from
+  t1 left join
+   (t2
+    join
+    t3 on
+    (t3.f=(select max(g) from t4 where t4.h=t1.a))
+   ) on (t2.c=t1.a );
+
+drop table t1,t2,t3,t4;
+
+create table t1 (a int);
+insert into t1 values (1),(2);
+create table t2 (b int);
+insert into t2 values (1),(2);
+create table t3 (c int);
+insert into t3 values (1),(2);
+
+--error ER_BAD_FIELD_ERROR
+select * from ( select * from t1 left join t2
+                              on b in (select x from t3 as sq1)
+              ) as sq2;
+
+drop table t1,t2,t3;
+
+--echo # end of 10.2 tests
+
+--echo #
+--echo # MDEV-22866: Crash in join optimizer with constant outer join nest
+--echo #
+
+CREATE TABLE t1 (a INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+
+CREATE TABLE t2 (b INT) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (3),(4);
+
+CREATE TABLE t3 (c INT, KEY(c)) ENGINE=MyISAM;
+
+CREATE TABLE t4 (d INT, KEY(d)) ENGINE=MyISAM;
+INSERT INTO t4 VALUES (5),(6);
+
+CREATE TABLE t5 (e INT) ENGINE=MyISAM;
+INSERT INTO t5 VALUES (7),(8);
+
+CREATE TABLE t6 (f INT) ENGINE=MyISAM;
+INSERT INTO t6 VALUES (9),(10);
+
+SELECT *
+FROM
+  t1
+  LEFT JOIN (
+    t2 LEFT JOIN (
+       t3 JOIN
+       t4 ON t3.c = t4.d and t3.c >2 and t3.c<0
+    ) ON t2.b >= t4.d
+  ) ON t1.a <= t2.b
+  LEFT JOIN t5 ON t2.b = t5.e
+  LEFT JOIN t6 ON t3.c = t6.f;
+
+drop table t1,t2,t3,t4,t5,t6;
+
+--echo #
 --echo # MDEV-17518: Range optimization doesn't use ON expressions from nested outer joins
 --echo #
 create table t1(a int);
@@ -2251,39 +2336,6 @@ WHERE t3.pk IN (2);
 drop view v4;
 drop table t1,t2,t3,t4;
 
-SET optimizer_switch=@org_optimizer_switch;
-
---echo #
---echo # MDEV-22866: Crash in join optimizer with constant outer join nest
---echo #
-
-CREATE TABLE t1 (a INT) ENGINE=MyISAM;
-INSERT INTO t1 VALUES (1),(2);
+--echo # end of 10.3 tests
 
-CREATE TABLE t2 (b INT) ENGINE=MyISAM;
-INSERT INTO t2 VALUES (3),(4);
-
-CREATE TABLE t3 (c INT, KEY(c)) ENGINE=MyISAM;
-
-CREATE TABLE t4 (d INT, KEY(d)) ENGINE=MyISAM;
-INSERT INTO t4 VALUES (5),(6);
-
-CREATE TABLE t5 (e INT) ENGINE=MyISAM;
-INSERT INTO t5 VALUES (7),(8);
-
-CREATE TABLE t6 (f INT) ENGINE=MyISAM;
-INSERT INTO t6 VALUES (9),(10);
-
-SELECT *
-FROM
-  t1
-  LEFT JOIN (
-    t2 LEFT JOIN (
-       t3 JOIN
-       t4 ON t3.c = t4.d and t3.c >2 and t3.c<0
-    ) ON t2.b >= t4.d
-  ) ON t1.a <= t2.b
-  LEFT JOIN t5 ON t2.b = t5.e
-  LEFT JOIN t6 ON t3.c = t6.f;
-
-drop table t1,t2,t3,t4,t5,t6;
+SET optimizer_switch=@org_optimizer_switch;
diff --git a/mysql-test/main/join_outer_jcl6.result b/mysql-test/main/join_outer_jcl6.result
index 2c7dc7b85bb..3cb846426fe 100644
--- a/mysql-test/main/join_outer_jcl6.result
+++ b/mysql-test/main/join_outer_jcl6.result
@@ -2694,6 +2694,77 @@ id	timestamp	modifiedBy	id	REV	REVTYPE	profile_id	id	REV	person_id	id	REV
 DROP TABLE t1,t2,t3,t4;
 # end of 10.1 tests
 #
+# MDEV-25362: name resolution for subqueries in ON expressions
+#
+create table t1 (a int, b int);
+create table t2 (c int, d int);
+create table t3 (e int, f int);
+create table t4 (g int, h int);
+explain
+select *
+from
+t1 left join
+(t2
+join
+t3 on
+(t3.f=t1.a)
+) on (t2.c=t1.a );
+ERROR 42S22: Unknown column 't1.a' in 'on clause'
+explain
+select *
+from
+t1 left join
+(t2
+join
+t3 on
+(t3.f=(select max(g) from t4 where t4.h=t1.a))
+) on (t2.c=t1.a );
+ERROR 42S22: Unknown column 't1.a' in 'where clause'
+drop table t1,t2,t3,t4;
+create table t1 (a int);
+insert into t1 values (1),(2);
+create table t2 (b int);
+insert into t2 values (1),(2);
+create table t3 (c int);
+insert into t3 values (1),(2);
+select * from ( select * from t1 left join t2
+on b in (select x from t3 as sq1)
+) as sq2;
+ERROR 42S22: Unknown column 'x' in 'field list'
+drop table t1,t2,t3;
+# end of 10.2 tests
+#
+# MDEV-22866: Crash in join optimizer with constant outer join nest
+#
+CREATE TABLE t1 (a INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+CREATE TABLE t2 (b INT) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (3),(4);
+CREATE TABLE t3 (c INT, KEY(c)) ENGINE=MyISAM;
+CREATE TABLE t4 (d INT, KEY(d)) ENGINE=MyISAM;
+INSERT INTO t4 VALUES (5),(6);
+CREATE TABLE t5 (e INT) ENGINE=MyISAM;
+INSERT INTO t5 VALUES (7),(8);
+CREATE TABLE t6 (f INT) ENGINE=MyISAM;
+INSERT INTO t6 VALUES (9),(10);
+SELECT *
+FROM
+t1
+LEFT JOIN (
+t2 LEFT JOIN (
+t3 JOIN
+t4 ON t3.c = t4.d and t3.c >2 and t3.c<0
+) ON t2.b >= t4.d
+) ON t1.a <= t2.b
+LEFT JOIN t5 ON t2.b = t5.e
+LEFT JOIN t6 ON t3.c = t6.f;
+a	b	c	d	e	f
+1	3	NULL	NULL	NULL	NULL
+2	3	NULL	NULL	NULL	NULL
+1	4	NULL	NULL	NULL	NULL
+2	4	NULL	NULL	NULL	NULL
+drop table t1,t2,t3,t4,t5,t6;
+#
 # MDEV-17518: Range optimization doesn't use ON expressions from nested outer joins
 #
 create table t1(a int);
@@ -2761,35 +2832,5 @@ WHERE t3.pk IN (2);
 1
 drop view v4;
 drop table t1,t2,t3,t4;
+# end of 10.3 tests
 SET optimizer_switch=@org_optimizer_switch;
-#
-# MDEV-22866: Crash in join optimizer with constant outer join nest
-#
-CREATE TABLE t1 (a INT) ENGINE=MyISAM;
-INSERT INTO t1 VALUES (1),(2);
-CREATE TABLE t2 (b INT) ENGINE=MyISAM;
-INSERT INTO t2 VALUES (3),(4);
-CREATE TABLE t3 (c INT, KEY(c)) ENGINE=MyISAM;
-CREATE TABLE t4 (d INT, KEY(d)) ENGINE=MyISAM;
-INSERT INTO t4 VALUES (5),(6);
-CREATE TABLE t5 (e INT) ENGINE=MyISAM;
-INSERT INTO t5 VALUES (7),(8);
-CREATE TABLE t6 (f INT) ENGINE=MyISAM;
-INSERT INTO t6 VALUES (9),(10);
-SELECT *
-FROM
-t1
-LEFT JOIN (
-t2 LEFT JOIN (
-t3 JOIN
-t4 ON t3.c = t4.d and t3.c >2 and t3.c<0
-) ON t2.b >= t4.d
-) ON t1.a <= t2.b
-LEFT JOIN t5 ON t2.b = t5.e
-LEFT JOIN t6 ON t3.c = t6.f;
-a	b	c	d	e	f
-1	3	NULL	NULL	NULL	NULL
-2	3	NULL	NULL	NULL	NULL
-1	4	NULL	NULL	NULL	NULL
-2	4	NULL	NULL	NULL	NULL
-drop table t1,t2,t3,t4,t5,t6;
diff --git a/mysql-test/main/subselect_exists2in.result b/mysql-test/main/subselect_exists2in.result
index e8ef7081b09..6ff518b5a29 100644
--- a/mysql-test/main/subselect_exists2in.result
+++ b/mysql-test/main/subselect_exists2in.result
@@ -1102,4 +1102,22 @@ U5.`storage_target_id` = V0.`id`
 );
 id
 drop table t1,t2,t3;
+#
+# MDEV-25407: EXISTS subquery with correlation in ON expression crashes
+#
+create table t10(a int primary key);
+insert into t10 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t11(a int primary key);
+insert into t11 select a.a + b.a* 10 + c.a * 100 from t10 a, t10 b, t10 c;
+create table t1 (a int, b int);
+insert into t1 select a,a from t10;
+create table t2 (a int, b int);
+insert into t2 select a,a from t11;
+create table t3 as select * from t2;
+explain  select *  from t1  where    exists (select t2.a from t2 left join t3 on (t3.b=t1.b) where t2.a=t1.a);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	10	
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	1000	Using where; Start temporary; Using join buffer (flat, BNL join)
+1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	1000	Using where; End temporary; Using join buffer (incremental, BNL join)
+drop table t1, t2, t3, t10, t11;
 set optimizer_switch=default;
diff --git a/mysql-test/main/subselect_exists2in.test b/mysql-test/main/subselect_exists2in.test
index e27ce57038b..e70d643138b 100644
--- a/mysql-test/main/subselect_exists2in.test
+++ b/mysql-test/main/subselect_exists2in.test
@@ -941,5 +941,28 @@ WHERE (
 
 drop table t1,t2,t3;
 
+--echo #
+--echo # MDEV-25407: EXISTS subquery with correlation in ON expression crashes
+--echo #
+create table t10(a int primary key);
+insert into t10 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+create table t11(a int primary key);
+insert into t11 select a.a + b.a* 10 + c.a * 100 from t10 a, t10 b, t10 c;
+
+create table t1 (a int, b int);
+insert into t1 select a,a from t10;
+
+create table t2 (a int, b int);
+insert into t2 select a,a from t11;
+
+create table t3 as select * from t2;
+
+
+explain  select *  from t1  where    exists (select t2.a from t2 left join t3 on (t3.b=t1.b) where t2.a=t1.a);
+
+drop table t1, t2, t3, t10, t11;
+
+
 #restore defaults
 set optimizer_switch=default;
diff --git a/mysql-test/suite/binlog/r/binlog_statement_insert_delayed.result b/mysql-test/suite/binlog/r/binlog_statement_insert_delayed.result
index d6875ab60e0..a4cd5b4080d 100644
--- a/mysql-test/suite/binlog/r/binlog_statement_insert_delayed.result
+++ b/mysql-test/suite/binlog/r/binlog_statement_insert_delayed.result
@@ -50,3 +50,4 @@ a
 400
 401
 drop table t1;
+reset master;
diff --git a/mysql-test/suite/binlog/t/binlog_statement_insert_delayed.test b/mysql-test/suite/binlog/t/binlog_statement_insert_delayed.test
index b2af560fa50..9145afc047f 100644
--- a/mysql-test/suite/binlog/t/binlog_statement_insert_delayed.test
+++ b/mysql-test/suite/binlog/t/binlog_statement_insert_delayed.test
@@ -10,3 +10,4 @@ disable_query_log;
 call mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT");
 enable_query_log;
 -- source include/binlog_insert_delayed.test
+reset master;
diff --git a/mysql-test/suite/innodb/r/temporary_table.result b/mysql-test/suite/innodb/r/temporary_table.result
index d7ea25fa117..0df99aecc46 100644
--- a/mysql-test/suite/innodb/r/temporary_table.result
+++ b/mysql-test/suite/innodb/r/temporary_table.result
@@ -678,3 +678,99 @@ SET FOREIGN_KEY_CHECKS = 0;
 CREATE TEMPORARY TABLE t1(f1 INT NOT NULL,
 FOREIGN KEY(f1) REFERENCES t0(f1))ENGINE=InnoDB;
 ERROR HY000: Can't create table `test`.`t1` (errno: 150 "Foreign key constraint is incorrectly formed")
+CREATE TABLE t (c INT) ENGINE=InnoDB;
+INSERT INTO t VALUES(0);
+CREATE TEMPORARY TABLE t2 (c INT) ENGINE=InnoDB;
+START TRANSACTION READ ONLY;
+INSERT INTO t2 SELECT * FROM t;
+COMMIT;
+DROP TABLE t, t2;
+CREATE TEMPORARY TABLE t (c INT,c2 INT) ENGINE=InnoDB;
+START TRANSACTION READ ONLY;
+INSERT INTO t VALUES(0);
+ERROR 21S01: Column count doesn't match value count at row 1
+SAVEPOINT s;
+INSERT INTO t VALUES(0,0);
+COMMIT;
+DROP TABLE t;
+CREATE TEMPORARY TABLE t (c INT,c2 INT) ENGINE=InnoDB;
+START TRANSACTION READ ONLY;
+INSERT INTO t VALUES(0);
+ERROR 21S01: Column count doesn't match value count at row 1
+SAVEPOINT s;
+INSERT INTO t VALUES(0,0);
+ROLLBACK;
+DROP TABLE t;
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1);
+START TRANSACTION READ ONLY;
+UPDATE t1 SET a= 2;
+COMMIT;
+DROP TABLE t1;
+CREATE TEMPORARY TABLE t(c INT) ENGINE=InnoDB;
+SET SESSION tx_read_only=TRUE;
+LOCK TABLE test.t READ;
+SELECT * FROM t;
+c
+INSERT INTO t VALUES(0xADC3);
+SET SESSION tx_read_only=FALSE;
+DROP TABLE t;
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1);
+START TRANSACTION READ ONLY;
+UPDATE t1 SET a= 2;
+COMMIT;
+DROP TABLE t1;
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY, b int) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1, 1);
+START TRANSACTION READ ONLY;
+UPDATE t1 SET b= 2;
+COMMIT;
+DROP TABLE t1;
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY, b int, c varchar(255)) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1, 1, repeat('a', 200));
+START TRANSACTION READ ONLY;
+UPDATE t1 SET b= 2, c=repeat('a', 250);
+COMMIT;
+DROP TABLE t1;
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1);
+START TRANSACTION READ ONLY;
+UPDATE t1 SET a= 2;
+ROLLBACK;
+DROP TABLE t1;
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1);
+START TRANSACTION READ ONLY;
+DELETE FROM t1 WHERE a= 2;
+COMMIT;
+DROP TABLE t1;
+CREATE TEMPORARY TABLE tmp (a INT) ENGINE=InnoDB;
+INSERT INTO tmp () VALUES (),();
+SET TX_READ_ONLY= 1;
+INSERT INTO tmp SELECT * FROM tmp;
+SET TX_READ_ONLY= 0;
+DROP TABLE tmp;
+SET sql_mode='';
+SET GLOBAL tx_read_only=TRUE;
+CREATE TEMPORARY TABLE t (c INT);
+SET SESSION tx_read_only=DEFAULT;
+INSERT INTO t VALUES(1);
+INSERT INTO t SELECT * FROM t;
+SET SESSION tx_read_only=FALSE;
+SET GLOBAL tx_read_only=OFF;
+DROP TABLE t;
+CREATE TEMPORARY TABLE t(a INT);
+SET SESSION tx_read_only=ON;
+LOCK TABLE t READ;
+SELECT COUNT(*)FROM t;
+COUNT(*)
+0
+INSERT INTO t VALUES (0);
+SET SESSION tx_read_only=OFF;
+DROP TABLE t;
+CREATE TEMPORARY TABLE t (a INT) ENGINE=InnoDB;
+INSERT INTO t VALUES (1);
+START TRANSACTION READ ONLY;
+UPDATE t SET a = NULL;
+ROLLBACK;
diff --git a/mysql-test/suite/innodb/t/temporary_table.test b/mysql-test/suite/innodb/t/temporary_table.test
index 8e3ddf95634..13c203b587b 100644
--- a/mysql-test/suite/innodb/t/temporary_table.test
+++ b/mysql-test/suite/innodb/t/temporary_table.test
@@ -502,3 +502,110 @@ SET FOREIGN_KEY_CHECKS = 0;
 --error ER_CANT_CREATE_TABLE
 CREATE TEMPORARY TABLE t1(f1 INT NOT NULL,
 			  FOREIGN KEY(f1) REFERENCES t0(f1))ENGINE=InnoDB;
+
+CREATE TABLE t (c INT) ENGINE=InnoDB;
+INSERT INTO t VALUES(0);
+CREATE TEMPORARY TABLE t2 (c INT) ENGINE=InnoDB;
+START TRANSACTION READ ONLY;
+INSERT INTO t2 SELECT * FROM t;
+COMMIT;
+DROP TABLE t, t2;
+
+CREATE TEMPORARY TABLE t (c INT,c2 INT) ENGINE=InnoDB;
+START TRANSACTION READ ONLY;
+--error ER_WRONG_VALUE_COUNT_ON_ROW
+INSERT INTO t VALUES(0);
+SAVEPOINT s;
+INSERT INTO t VALUES(0,0);
+COMMIT;
+DROP TABLE t;
+
+CREATE TEMPORARY TABLE t (c INT,c2 INT) ENGINE=InnoDB;
+START TRANSACTION READ ONLY;
+--error ER_WRONG_VALUE_COUNT_ON_ROW
+INSERT INTO t VALUES(0);
+SAVEPOINT s;
+INSERT INTO t VALUES(0,0);
+ROLLBACK;
+DROP TABLE t;
+
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1);
+START TRANSACTION READ ONLY;
+UPDATE t1 SET a= 2;
+COMMIT;
+DROP TABLE t1;
+
+CREATE TEMPORARY TABLE t(c INT) ENGINE=InnoDB;
+SET SESSION tx_read_only=TRUE;
+LOCK TABLE test.t READ;
+SELECT * FROM t;
+INSERT INTO t VALUES(0xADC3);
+SET SESSION tx_read_only=FALSE;
+DROP TABLE t;
+
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1);
+START TRANSACTION READ ONLY;
+UPDATE t1 SET a= 2;
+COMMIT;
+DROP TABLE t1;
+
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY, b int) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1, 1);
+START TRANSACTION READ ONLY;
+UPDATE t1 SET b= 2;
+COMMIT;
+DROP TABLE t1;
+
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY, b int, c varchar(255)) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1, 1, repeat('a', 200));
+START TRANSACTION READ ONLY;
+UPDATE t1 SET b= 2, c=repeat('a', 250);
+COMMIT;
+DROP TABLE t1;
+
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1);
+START TRANSACTION READ ONLY;
+UPDATE t1 SET a= 2;
+ROLLBACK;
+DROP TABLE t1;
+
+CREATE TEMPORARY TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1);
+START TRANSACTION READ ONLY;
+DELETE FROM t1 WHERE a= 2;
+COMMIT;
+DROP TABLE t1;
+
+CREATE TEMPORARY TABLE tmp (a INT) ENGINE=InnoDB;
+INSERT INTO tmp () VALUES (),();
+SET TX_READ_ONLY= 1;
+INSERT INTO tmp SELECT * FROM tmp;
+SET TX_READ_ONLY= 0;
+DROP TABLE tmp;
+
+SET sql_mode='';
+SET GLOBAL tx_read_only=TRUE;
+CREATE TEMPORARY TABLE t (c INT);
+SET SESSION tx_read_only=DEFAULT;
+INSERT INTO t VALUES(1);
+INSERT INTO t SELECT * FROM t;
+SET SESSION tx_read_only=FALSE;
+SET GLOBAL tx_read_only=OFF;
+DROP TABLE t;
+
+CREATE TEMPORARY TABLE t(a INT);
+SET SESSION tx_read_only=ON;
+LOCK TABLE t READ;
+SELECT COUNT(*)FROM t;
+INSERT INTO t VALUES (0);
+SET SESSION tx_read_only=OFF;
+DROP TABLE t;
+
+CREATE TEMPORARY TABLE t (a INT) ENGINE=InnoDB;
+INSERT INTO t VALUES (1);
+START TRANSACTION READ ONLY;
+UPDATE t SET a = NULL;
+ROLLBACK;
diff --git a/mysql-test/suite/versioning/r/alter.result b/mysql-test/suite/versioning/r/alter.result
index e0cd63c4d56..b2dbbba7027 100644
--- a/mysql-test/suite/versioning/r/alter.result
+++ b/mysql-test/suite/versioning/r/alter.result
@@ -745,3 +745,20 @@ create or replace table t1 (x int);
 alter table t1 add column y timestamp(6) as row start;
 ERROR HY000: Table `t1` is not system-versioned
 drop table t1;
+#
+# MDEV-25327 Unexpected ER_DUP_ENTRY upon dropping PK column from system-versioned table
+#
+create table t1 (pk int, a int, primary key (pk), key (a))
+with system versioning;
+insert into t1 values (1, 1), (2, 2);
+delete from t1;
+set system_versioning_alter_history= keep;
+alter table t1 drop pk;
+drop table t1;
+create table t1 (pk int, a int, primary key (pk), key (a))
+with system versioning;
+insert into t1 values (1, 2), (2, 8), (3, 4), (4, 4), (5, 0);
+delete from t1;
+set system_versioning_alter_history= keep;
+alter ignore table t1 drop pk;
+drop table t1;
diff --git a/mysql-test/suite/versioning/t/alter.test b/mysql-test/suite/versioning/t/alter.test
index efb7609bbbe..16f391b1454 100644
--- a/mysql-test/suite/versioning/t/alter.test
+++ b/mysql-test/suite/versioning/t/alter.test
@@ -631,3 +631,25 @@ create or replace table t1 (x int);
 alter table t1 add column y timestamp(6) as row start;
 # cleanup
 drop table t1;
+
+
+--echo #
+--echo # MDEV-25327 Unexpected ER_DUP_ENTRY upon dropping PK column from system-versioned table
+--echo #
+create table t1 (pk int, a int, primary key (pk), key (a))
+with system versioning;
+insert into t1 values (1, 1), (2, 2);
+delete from t1;
+set system_versioning_alter_history= keep;
+alter table t1 drop pk;
+# cleanup
+drop table t1;
+
+create table t1 (pk int, a int, primary key (pk), key (a))
+with system versioning;
+insert into t1 values (1, 2), (2, 8), (3, 4), (4, 4), (5, 0);
+delete from t1;
+set system_versioning_alter_history= keep;
+alter ignore table t1 drop pk;
+# cleanup
+drop table t1;