DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (b1 BOOL <CUSTOM_COL_OPTIONS>,
b2 BOOLEAN <CUSTOM_COL_OPTIONS>
) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
SHOW COLUMNS IN t1;
Field	Type	Null	Key	Default	Extra
b1	tinyint(1)	#	#	#	
b2	tinyint(1)	#	#	#	
INSERT INTO t1 (b1,b2) VALUES (1,TRUE);
SELECT b1,b2 FROM t1;
b1	b2
1	1
INSERT INTO t1 (b1,b2) VALUES (FALSE,0);
SELECT b1,b2 FROM t1;
b1	b2
0	0
1	1
INSERT INTO t1 (b1,b2) VALUES (2,3);
SELECT b1,b2 FROM t1;
b1	b2
0	0
1	1
2	3
INSERT INTO t1 (b1,b2) VALUES (-1,-2);
SELECT b1,b2 FROM t1;
b1	b2
-1	-2
0	0
1	1
2	3
SELECT IF(b1,'true','false') AS a, IF(b2,'true','false') AS b FROM t1;
a	b
false	false
true	true
true	true
true	true
SELECT b1,b2 FROM t1 WHERE b1 = TRUE;
b1	b2
1	1
SELECT b1,b2 FROM t1 WHERE b2 = FALSE;
b1	b2
0	0
INSERT INTO t1 (b1,b2) VALUES ('a','b');
Warnings:
Warning	1366	Incorrect integer value: 'a' for column 'b1' at row 1
Warning	1366	Incorrect integer value: 'b' for column 'b2' at row 1
SELECT b1,b2 FROM t1;
b1	b2
-1	-2
0	0
0	0
1	1
2	3
INSERT INTO t1 (b1,b2) VALUES (128,-129);
Warnings:
Warning	1264	Out of range value for column 'b1' at row 1
Warning	1264	Out of range value for column 'b2' at row 1
SELECT b1,b2 FROM t1;
b1	b2
-1	-2
0	0
0	0
1	1
127	-128
2	3
ALTER TABLE t1 ADD COLUMN b3 BOOLEAN UNSIGNED;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNSIGNED' at line 1
ALTER TABLE t1 ADD COLUMN b3 BOOL ZEROFILL;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'ZEROFILL' at line 1
DROP TABLE t1;
