SQL RESET AUTOCRENME
ALTER TABLE tmp AUTO_INCREMENT = 3;
Fair Finch
ALTER TABLE tmp AUTO_INCREMENT = 3;
DBCC CHECKIDENT (mytable, RESEED, 0)
ALTER TABLE tablename AUTO_INCREMENT = 1
SET @num := 0;
UPDATE your_table SET id = @num := (@num+1);
ALTER TABLE your_table AUTO_INCREMENT =1;