DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a SET('') <CUSTOM_COL_OPTIONS>,
b SET('test1','test2','test3','test4','test5') <CUSTOM_COL_OPTIONS>,
c SET('01','02','03','04','05','06','07','08','09','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','25','26','27','28','29','30','31','32','33','34','35','36','37','38','39','40','41','42','43','44','45','46','47','48','49','50''51','52','53','54','55','56','57','58','59','60','61','62','63','64') <CUSTOM_COL_OPTIONS>
) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
SHOW COLUMNS IN t1;
Field	Type	Null	Key	Default	Extra
a	set('')	#	#	#	
b	set('test1','test2','test3','test4','test5')	#	#	#	
c	set('01','02','03','04','05','06','07','08','09','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','25','26','27','28','29','30','31','32','33','34','35','36','37','38','39','40','41','42','43','44','45','46','47','48','49','50''51','52','53','54','55','56','57','58','59','60','61','62','63','64')	#	#	#	
INSERT INTO t1 (a,b,c) VALUES 
('','test2,test3','01,34,44,,23'),
('',5,2),
(',','test4,test2','');
Warnings:
Warning	1265	Data truncated for column 'c' at row 1
SELECT a,b,c FROM t1;
a	b	c
	test1,test3	02
	test2,test3	01,23,34,44
	test2,test4	
INSERT INTO t1 (a,b,c) VALUES (0,'test6',-1);
Warnings:
Warning	1265	Data truncated for column 'b' at row 1
Warning	1265	Data truncated for column 'c' at row 1
SELECT a,b,c FROM t1;
a	b	c
		01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50'51,52,53,54,55,56,57,58,59,60,61,62,63,64
	test1,test3	02
	test2,test3	01,23,34,44
	test2,test4	
ALTER TABLE t1 ADD COLUMN e SET('a','A') <CUSTOM_COL_OPTIONS>;
Warnings:
Note	1291	Column 'e' has duplicated value 'a' in SET
SHOW COLUMNS IN t1;
Field	Type	Null	Key	Default	Extra
a	set('')	#	#	#	
b	set('test1','test2','test3','test4','test5')	#	#	#	
c	set('01','02','03','04','05','06','07','08','09','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','25','26','27','28','29','30','31','32','33','34','35','36','37','38','39','40','41','42','43','44','45','46','47','48','49','50''51','52','53','54','55','56','57','58','59','60','61','62','63','64')	#	#	#	
e	set('a','A')	#	#	#	
ALTER TABLE t1 ADD COLUMN f SET('1','2','3','4','5','6','7','8','9','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',' ','11','12','13','14','15','16','17','18','19','1a','1b','1c','1d','1e','1f','1g','1h','1i','1j','1k','1l','1m','1n','1o','1p','1q','1r','1s','1t','1u','1v','1w','1x','1y','1z','20','21','22','23','24','25','26','27','28','29','2a','2b','2c','2d','2e','2f','2g','2h','2i','2j','2k','2l','2m','2n','2o','2p','2q','2r','2s','2t','2u','2v','2w','2x','2y','2z','30','31','32','33','34','35','36','37','38','39','3a','3b','3c','3d','3e','3f','3g','3h','3i') <CUSTOM_COL_OPTIONS>;
ERROR HY000: Too many strings for column f and SET
SELECT a,b,c,e FROM t1 WHERE FIND_IN_SET('test2',b)>0 OR a != '';
a	b	c	e
	test2,test3	01,23,34,44	NULL
	test2,test4		NULL
DROP TABLE t1;