Answers for "create created at and updated_at mysql"

ADD COLOUNS CREATED AND UPDATED AT IN MYSQL

ALTER TABLE t1
ADD COLUMN created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
ADD COLUMN updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP;

created at and updated at in mysql

ALTER TABLE t1
ADD COLUMN created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
ADD COLUMN updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP;