SELECT * FROM student stu LEFT JOIN sys_user su ON su.id_=stu.user_id_ WHERE stu.user_id_=#{id} SELECT * FROM student WHERE tenant_id_=#{tenantId} INSERT INTO student (user_id_,certificate_photo_,create_time_,update_time_,tenant_id_) VALUES(#{userId},#{certificatePhoto},#{createTime},#{updateTime},#{tenantId}) UPDATE student certificate_photo_ = #{certificatePhoto}, tenant_id_ = #{tenantId}, create_time_ = #{createTime}, update_time_ = NOW() WHERE user_id_ = #{userId} DELETE FROM student WHERE user_id_ = #{id} tenant_id_=#{tenantId} AND (stu.user_id_=#{search} OR su.real_name_ LIKE CONCAT (#{search}, '%')) SELECT * FROM student stu LEFT JOIN sys_user su ON su.id_=stu.user_id_ SELECT COUNT(*) FROM student LEFT JOIN sys_user su ON su.id_=stu.user_id_