how to reset auto_increment in mysql after delete code example

Example 1: mysql reset auto increment value

ALTER TABLE table_name AUTO_INCREMENT = 1;

Example 2: mysql reset auto increment to 1

ALTER TABLE tablename AUTO_INCREMENT = 1

Example 3: reset id auto increment after deleting a table row in phpmyadmin

SET @autoid :=0; 
UPDATE table_name SET id = @autoid:=(@autoid+1);
ALTER TABLE table_name AUTO_INCREMENT=1;

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