select sum(a.b) as num from (select count() as b from table_1 uNIOn all select coun
select sum(a.b) as num from (
select count() as b from table_1
uNIOn all
select count() as b from table_2
) as a(注意这里要取个别名)
--结束END--
本文标题: mysql使用 union all查询统计总数量
本文链接: https://www.lsjlt.com/news/42756.html(转载时请注明来源链接)
有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341
下载Word文档到电脑,方便收藏和打印~
2024-05-16
2024-05-16
2024-05-16
2024-05-15
2024-05-15
2024-05-15
2024-05-15
2024-05-15
2024-05-15
2024-05-15
回答
回答
回答
回答
回答
回答
回答
回答
回答
回答
0