Am I breaking something if I set an autoincrement PK to 0?

I have this table CREATE TABLE test_table ( id int unsigned NOT NULL AUTO_INCREMENT, name varchar(50) NOT NULL, PRIMARY KEY (id), UNIQUE KEY name_UNIQUE (name) ) ENGINE=InnoDB; Insert some records... INSERT INTO test_table (name) VALUES ('a'); INSERT INTO test_table (name) VALUES ('b'); INSERT INTO test_table (name) VALUES ('c'); So I get records 1, 2 and 3 with values a, b and c respectively. Now, I need to have a record with 0 as id and empty string as name. So I did this INSERT INTO test_table (id, name) VALUES ('0', ''); UPDATE test_table SET id='0' WHERE id='4'; ALTER TABLE test_table AUTO_INCREMENT = 4 ; Do I have a guarantee that everything will continue to work properly? Table references, auto increment sequence, etc...