drop table if exists t1,t2;
drop view if exists v1;
drop procedure if exists p1;
CREATE TABLE t1 (a int, b varchar(32));
INSERT INTO t1 VALUES
(7,'ggggggg'), (1,'a'), (3,'ccc'),
(4,'dddd'), (1,'A'), (2,'BB'), (4,'DDDD'),
(5,'EEEEE'), (7,'GGGGGGG'), (2,'bb');
CREATE TABLE t1c SELECT * FROM t1;
CREATE TABLE t2 (c int);
INSERT INTO t2 VALUES 
(4), (5), (7), (1);
CREATE TABLE t2c SELECT * FROM t2;
CREATE VIEW v1 AS SELECT a, UPPER(b) FROM t1;
DELETE FROM t1 WHERE a=2 RETURNING * ;
a	b
2	BB
2	bb
SELECT * FROM t1;
a	b
7	ggggggg
1	a
3	ccc
4	dddd
1	A
4	DDDD
5	EEEEE
7	GGGGGGG
INSERT INTO t1 VALUES (2,'BB'), (2,'bb');
DELETE FROM t1 WHERE a=2 RETURNING b;
b
bb
BB
SELECT * FROM t1;
a	b
7	ggggggg
1	a
3	ccc
4	dddd
1	A
4	DDDD
5	EEEEE
7	GGGGGGG
DELETE FROM t1 WHERE a=2 RETURNING c;
ERROR 42S22: Unknown column 'c' in 'RETURNING'
INSERT INTO t1 VALUES (2,'BB'), (2,'bb');
DELETE FROM t1 WHERE a=2 RETURNING a, UPPER(b);
a	UPPER(b)
2	BB
2	BB
SELECT * FROM t1;
a	b
7	ggggggg
1	a
3	ccc
4	dddd
1	A
4	DDDD
5	EEEEE
7	GGGGGGG
INSERT INTO t1 VALUES (2,'BB'), (2,'bb');
DELETE FROM t1 WHERE a=6 RETURNING b;
b
SELECT * FROM t1;
a	b
7	ggggggg
1	a
3	ccc
4	dddd
1	A
2	bb
4	DDDD
5	EEEEE
7	GGGGGGG
2	BB
DELETE FROM t1 WHERE a=2 RETURNING MAX(b);
ERROR HY000: Invalid use of group function
DELETE FROM t1 WHERE a < 5 RETURNING a, (SELECT MIN(c) FROM t2 WHERE c=a+1);
a	(SELECT MIN(c) FROM t2 WHERE c=a+1)
1	NULL
3	4
4	5
1	NULL
2	NULL
4	5
2	NULL
SELECT * FROM t1;
a	b
7	ggggggg
5	EEEEE
7	GGGGGGG
DELETE FROM t1;
INSERT INTO t1 SELECT * FROM t1c;
DELETE FROM t2 WHERE c < 5 
RETURNING (SELECT GROUP_CONCAT(b) FROM t1 GROUP BY a HAVING a=c);
(SELECT GROUP_CONCAT(b) FROM t1 GROUP BY a HAVING a=c)
dddd,DDDD
a,A
SELECT * FROM t2;
c
5
7
DELETE FROM t2;
INSERT INTO t2 SELECT * FROM t2c;
CREATE FUNCTION f(arg INT) RETURNS TEXT
BEGIN
RETURN (SELECT GROUP_CONCAT(b) FROM t1 WHERE a=arg);
END|
DELETE FROM t2 WHERE c < 5 RETURNING f(c);
f(c)
dddd,DDDD
a,A
SELECT * FROM t2;
c
5
7
DELETE FROM t2;
INSERT INTO t2 SELECT * FROM t2c;
DROP FUNCTION f;
DELETE FROM v1 WHERE a < 5 RETURNING * ;
a	UPPER(b)
1	A
3	CCC
4	DDDD
1	A
2	BB
4	DDDD
2	BB
SELECT * FROM t1;
a	b
7	ggggggg
5	EEEEE
7	GGGGGGG
DELETE FROM t1;
INSERT INTO t1 SELECT * FROM t1c;
CREATE VIEW v11(a,c) AS SELECT a, COUNT(b) FROM t1 GROUP BY a;
DELETE FROM v11 WHERE a < 5 RETURNING * ;
ERROR HY000: The target table v11 of the DELETE is not updatable
DROP VIEW v11;
PREPARE stmt FROM 
"DELETE FROM t1 WHERE a=2 ORDER BY b LIMIT 1 RETURNING a, UPPER(b)";
EXECUTE stmt;
a	UPPER(b)
2	BB
SELECT * FROM t1;
a	b
7	ggggggg
1	a
3	ccc
4	dddd
1	A
4	DDDD
5	EEEEE
7	GGGGGGG
2	bb
EXECUTE stmt;
a	UPPER(b)
2	BB
SELECT * FROM t1;
a	b
7	ggggggg
1	a
3	ccc
4	dddd
1	A
4	DDDD
5	EEEEE
7	GGGGGGG
DEALLOCATE PREPARE stmt;
DROP VIEW v1;
DROP TABLE t1,t2;
DROP TABLE t1c,t2c;
#
# Bug mdev-4918: DELETE ... RETURNING subquery with more than 1 row
#
CREATE TABLE t1 (i1 int);
INSERT INTO t1 VALUES (1),(2);
CREATE TABLE t2 (i2 int);
INSERT INTO t2 VALUES (1),(2);
DELETE FROM t1 ORDER BY i1 RETURNING ( SELECT i2 FROM t2 );
ERROR 21000: Subquery returns more than 1 row
DROP TABLE t1,t2;
#
# MDEV-4919: Packets out of order on a SELECT after calling a procedure with DELETE .. RETURNING
#
CREATE TABLE t1 (i INT);
INSERT INTO t1 VALUES (1),(2);
CREATE PROCEDURE p1 (a INT) 
BEGIN
DELETE FROM t1 WHERE i = a RETURNING *;
INSERT INTO t1 VALUES (a);
END |
CALL p1(1);
i
1
SELECT * FROM t1;
i
1
2
DROP PROCEDURE p1;
DROP TABLE t1;
#
# MDEV-13776: DELETE ... RETURNING with sql_mode='ONLY_FULL_GROUP_BY'
#
set @sql_mode_save= @@sql_mode;
set sql_mode='ONLY_FULL_GROUP_BY';
CREATE TABLE t1 (id INT);
INSERT INTO t1 VALUE(1),(2),(3);
DELETE FROM t1 WHERE id > 2 RETURNING *;
id
3
set sql_mode=@sql_mode_save;
DROP TABLE t1;