摘要: 原文:https://blog.csdn.net/fu_fei_wen/article/details/78646410 一般求和 select sum(money) from user group by id; 按条件求和 select sum(if(type=1,money,0)) from u 阅读全文
posted @ 2022-06-21 09:13 pine007 阅读(764) 评论(0) 推荐(0) 编辑