Sql server SQL server将多行作为多列

我的测试数据如下：

表中还有一个uniqueidentifier列

**Month       Cost**

Jan         1000
Feb         1500
May         1200

我期望的结果是格式的

Jan     Feb     Mar     Apr     May 
1000    1500    NULL    NULL    1200

---

Pivot、CTE或普通查询的任何方法都可以。

如果月份总是12个月，您可以轻松使用Pivot，但不需要测试：

SELECT 
   P.[Jan],P.[Feb],P.[Mar],P.[Apr] 
FROM 
   TABLE
PIVOT 
   (MAX (Cost) for [Month] in ([Jan],[Feb],[Mar],[Apr])) AS P

---

如果需要创建动态代码，则必须生成sql代码，然后使用exec运行该代码，您可以将行转换为列

SELECT
    MIN(CASE WHEN [MONTH]='JAN' THEN Cost END) AS JAN,
    MIN(CASE WHEN [MONTH]='Feb' THEN Cost END) AS Feb,
    MIN(CASE WHEN [MONTH]='MAR' THEN Cost END) AS MAR,
    MIN(CASE WHEN [MONTH]='APR' THEN Cost END) AS APR,
    MIN(CASE WHEN [MONTH]='MAY' THEN Cost END) AS MAY,
    MIN(CASE WHEN [MONTH]='JUN' THEN Cost END) AS JUNE,
    MIN(CASE WHEN [MONTH]='JUL' THEN Cost END) AS JUL,
    MIN(CASE WHEN [MONTH]='AUG' THEN Cost END) AS AUG,
    MIN(CASE WHEN [MONTH]='SEP' THEN Cost END) AS SEP,
    MIN(CASE WHEN [MONTH]='OCT' THEN Cost END) AS OCT,
    MIN(CASE WHEN [MONTH]='NOV' THEN Cost END) AS NOV,
    MIN(CASE WHEN [MONTH]='DEC' THEN Cost END) AS DEC
    FROM YOURTABLE

---

如果您想要值的总和，您可以像往常一样将MIN改为sum

，您尝试过哪些不起作用的方法？它比pivot好吗？计划的成本是一样的，pivot更紧凑，但我认为它是一样的，非常感谢。没想到会这么简单