DROP DATABASE IF EXISTS mcs83_db;
CREATE DATABASE mcs83_db;
USE mcs83_db;
CREATE TABLE t1 (t1_int INT, t1_char CHAR(5))ENGINE=Columnstore;
CREATE TABLE t2 (t2_int INT, t2_char CHAR(5))ENGINE=Columnstore;
INSERT INTO t1 VALUES (NULL, NULL),(1, 'aaa'),(2, 'bbb'),(3, 'ccc'),(4, 'ddd'),(5, 'aa'),(6, ''),(7, 'aaaaa');
INSERT INTO t2 VALUES (NULL, NULL),(1, 'hhhh'),(3, 'iii'),(5, 'jjj'),(6, ''),(7, 'lll'),(9, 'm'),(11, 'nnn');
SELECT * FROM t1 ORDER BY t1_int;
t1_int	t1_char
NULL	NULL
1	aaa
2	bbb
3	ccc
4	ddd
5	aa
6	
7	aaaaa
SELECT * FROM t2 ORDER BY t2_int;
t2_int	t2_char
NULL	NULL
1	hhhh
3	iii
5	jjj
6	
7	lll
9	m
11	nnn
DELETE t1 FROM t1 INNER JOIN t2 ON t1.t1_int=t2.t2_int AND t1.t1_char LIKE '%a%';
SELECT * FROM t1 ORDER BY t1_int;
t1_int	t1_char
NULL	NULL
2	bbb
3	ccc
4	ddd
6	
DELETE t2 FROM t2 LEFT JOIN t1 ON t1.t1_int=t2.t2_int WHERE t2.t2_int IS NULL;
SELECT * FROM t2 ORDER BY t2_int;
t2_int	t2_char
1	hhhh
3	iii
5	jjj
6	
7	lll
9	m
11	nnn
DROP DATABASE mcs83_db;