DROP DATABASE IF EXISTS mcs219_db;
CREATE DATABASE mcs219_db;
USE mcs219_db;
CREATE TABLE t1 (a INT, b CHAR(35))ENGINE=Columnstore;
INSERT INTO t1 VALUES (NULL, NULL),(1, 'columnstore engine'),(2, 'mariadb database');
SELECT b, MID(b,4,5) FROM t1;
b	MID(b,4,5)
NULL	NULL
columnstore engine	umnst
mariadb database	iadb 
SELECT b, MID(b,12,5) FROM t1;
b	MID(b,12,5)
NULL	NULL
columnstore engine	 engi
mariadb database	abase
SELECT b, MID(b,5,15) FROM t1;
b	MID(b,5,15)
NULL	NULL
columnstore engine	mnstore engine
mariadb database	adb database
SELECT b, MID(b,12,15) FROM t1;
b	MID(b,12,15)
NULL	NULL
columnstore engine	 engine
mariadb database	abase
SELECT b, MID(b,1,1) FROM t1;
b	MID(b,1,1)
NULL	NULL
columnstore engine	c
mariadb database	m
SELECT b, MID(b,1,2) FROM t1;
b	MID(b,1,2)
NULL	NULL
columnstore engine	co
mariadb database	ma
SELECT b, MID(b,5,5) FROM t1;
b	MID(b,5,5)
NULL	NULL
columnstore engine	mnsto
mariadb database	adb d
SELECT b, MID(b,-2,5) FROM t1;
b	MID(b,-2,5)
NULL	NULL
columnstore engine	ne
mariadb database	se
SELECT b, MID(b,-5,15) FROM t1;
b	MID(b,-5,15)
NULL	NULL
columnstore engine	ngine
mariadb database	abase
SELECT b, MID(b,-15,15) FROM t1;
b	MID(b,-15,15)
NULL	NULL
columnstore engine	umnstore engine
mariadb database	ariadb database
SELECT b, MID(b,0,0) FROM t1;
b	MID(b,0,0)
NULL	NULL
columnstore engine	
mariadb database	
SELECT b, MID(b,1,0) FROM t1;
b	MID(b,1,0)
NULL	NULL
columnstore engine	
mariadb database	
SELECT b, MID(b,0,1) FROM t1;
b	MID(b,0,1)
NULL	NULL
columnstore engine	
mariadb database	
SELECT b, MID(b,-1,0) FROM t1;
b	MID(b,-1,0)
NULL	NULL
columnstore engine	
mariadb database	
DROP DATABASE mcs219_db;