Question

我得到一行，其中包含两列中的非零值：FixHours和AddHours：

FixHours | AddHours | CalculatedValue
---------+----------+----------------
     0,5 |      1,5 |            16.5

如何将其拆分为两行，例如：

FixHours | AddHours | CalculatedValue
---------+----------+----------------
     0,5 |        0 |            16.5
       0 |      1,5 |            16.5

我有一个想法是找到该行并使用union运算符人为地制作第二行。但是我有很多行同时在两列中包含值。有什么想法吗？

Answer 1

假设我正确理解你的问题，我认为你正在寻找的是这样的东西：

SELECT FixHours, AddHours, CalculatedValue
FROM tbl
WHERE FixHours = 0
OR AddHours = 0

UNION

SELECT FixHours, 0, CalculatedValue
FROM tbl
WHERE FixHours <> 0
AND AddHours <> 0

UNION

SELECT 0, AddHours, CalculatedValue
FROM tbl
WHERE FixHours <> 0
AND AddHours <> 0

Answer 2

这样的事情应该这样做：

select
 case when x=1 THEN 0 ELSE fixHours END as fixHours,
 case when x=2 THEN 0 ELSE addHours END as addHours,
 calculatedValue
from input
 cross join (select 1 as x UNION select 2 as x)

Answer 3

试试这个

SELECT FixHours, 0 AS AddHours, CalculatedValue
FROM table
UNION
SELECT 0, AddHours, CalculatedValue
FROM table

Answer 4

SELECT Split.FixHours
      ,Split.AddHours
      ,YourTable.CalculatedValue
FROM YourTable
     CROSS APPLY (
         VALUES (FixHours, 0), (0, AddHours)
     ) AS Split(FixHours, AddHours)

如何在MS SQL中将行拆分为两行

4 个答案: