Answers for "how to add auto increment to a column in mysql"

mysql set id auto increment

ALTER TABLE users AUTO_INCREMENT=1001;

auto_increment mysql

ALTER TABLE User AUTO_INCREMENT = 1;

add auto_increment column to existing table mysql

ALTER TABLE `users` ADD `id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY

ALTER TABLE `users` ADD `id` INT NOT NULL AUTO_INCREMENT UNIQUE FIRST

auto increment column in mysql query results

SET @auto_increment=0;
SELECT @auto_increment := @auto_increment+1 AS `No`;