1
CREATE TABLE bug44032(c CHAR(3) CHARACTER SET UTF8) ROW_FORMAT=REDUNDANT
3
INSERT INTO bug44032 VALUES('abc'),(0xEFBCA4EFBCA4EFBCA4);
4
UPDATE bug44032 SET c='DDD' WHERE c=0xEFBCA4EFBCA4EFBCA4;
5
UPDATE bug44032 SET c=NULL WHERE c='DDD';
6
UPDATE bug44032 SET c='DDD' WHERE c IS NULL;