select * from t_user where id = #{id}; select * from t_user where name = #{name} and password = #{password}; insert into t_user(name, password, identity, telNumber, idCard, email) values(#{name}, #{password}, #{identity}, #{telNumber}, #{idCard}, #{email}); update t_user set name = #{name}, identity = #{identity}, telNumber = #{telNumber}, idCard = #{idCard}, email = #{email} where id = #{id} update t_user set password = #{password} where id = #{id}