拆分成SQL多行

Question

我的表看起来像 -

我想实现这样的 -

请帮助SQL

Answer 1

替换表名，并尝试

insert into yourTableName (CollegeID, DeptID, EmpID, Yr, Mnth, Act, Pred) values (234, 34, 4, 2017, 1, 6131.86, 6131.82) 

Answer 2

如果列名是静态的，你可能会使用UNION SELECT查询，如下所示：

Select CollegeID, DeptID, EmpID, "2017" As Y, "1" As Mnth, [Act201701] As Act, [Pred201701] As Pred from [SomeTable] 
UNION 
Select CollegeID, DeptID, EmpID, "2017" As Y, "2" As Mnth, [Act201702] As Act, [Pred201702] As Pred from [SomeTable] 
UNION 
Select CollegeID, DeptID, EmpID, "2017" As Y, "3" As Mnth, [Act201703] As Act, [Pred201703] As Pred from [SomeTable] 

其中SomeTable是您的表名称。

Answer 3

使用apply：

select t.collegeid, t.deptid, t.empid, v.yr, v.mnth, v.act, v.pred 
from t outer apply 
    (values (act201701, pred201701, 2017, 1), 
      (act201702, pred201702, 2017, 2), 
      (act201703, pred201703, 2017, 3), 
    ) v(act, pred, yr, mnth); 

您还可以使用unpivot同样的事情。但是，apply实现了横向连接，它比仅仅不透明数据更强大。