Let's say I have two tables. A table with some common ids and common information about them. Then I have a table, which shows all the unique ids corresponding with common_ids and some unique information. I made a picture with Table1 and Table2. Let's say I have two tables. A table with some
阅读背景：
如何统一两个SQL查询（一个具有公共信息，一个具有唯一信息）
来源：互联网
分享到：
