t_user * SELECT FROM SELECT FROM id <= ${ user.id } INSERT INTO t_user #{ item } ${ item } SELECT * FROM t_user type = 1 type = 2 type = 3 type = 0 INSERT INTO t_user #{ item } VALUES ${ item } update name = ${ user.name } age = ${ user.age } id = ${ user.id } name = ${ user.name } DELETE FROM WHERE id = ${ id }