摘要: 1. case, count sql (mysql) SELECT (case when shi='1101' then 1 when shi='2101' then 2 when shi='3101' then 3 when shi='3206' then 4 when shi='5101' th 阅读全文
posted @ 2021-12-29 15:53 花生与酒 阅读(76) 评论(0) 推荐(0) 编辑