0
我很好奇,如果可以连接两个表来重新获取像下面这样的东西。SQL Server - 两个连接到同一列上的同一个表
**superTable**
id | project
1 aaa
2 bbb
**approvedTable**
id | statusStep | Emp
1 BossMan Gregor
1 FirstMate Hans
**notApprovedTable**
id | statusStep | Emp
1 Sailor Julia
1 Sr.Sailor Dave
我想加入这两个表“approvedTable”和“notApprovedTable”以超表上的ID,以有这样的事情
id | project | approvedStep | Emp | notApprovedStep | Emp
1 aaa BossMan Gregor null null
1 aaa FirstMate Hans null null
1 aaa null null Sailor Julia
1 aaa null null Sr.Sailor Dave
,如果我做一个简单连接就建立这样的
id | project | approvedStep | Emp | notApprovedStep | Emp
1 aaa BossMan Gregor Sailor Julia
1 aaa FirstMate Hans Sailor Julia
1 aaa BossMan Gregor Sr.Sailor Dave
1 aaa FirstMate Hans Sr.Sailor Dave