select id,class_name,num from clazz where id = #{id} select id,class_name,num from clazz and id = #{id} and class_name = #{className} and num = #{num} limit #{pageable.offset}, #{pageable.pageSize} select count(1) from clazz and id = #{id} and class_name = #{className} and num = #{num} insert into clazz(class_name, num) values (#{className}, #{num}) insert into clazz(class_name,num) values (#{entity.className},#{entity.num}) insert into clazz(class_name,num) values (#{entity.className},#{entity.num}) on duplicate key update class_name = values(class_name)num = values(num) update clazz class_name = #{className}, num = #{num}, where id = #{id} delete from clazz where id = #{id}