Question

请查看以下示例：

Empid.   Compcode.     Amount
101.        Basic.     1000
101.        Hra.       200
102.        Basic.     1200
102.        Hra.       200
102.        Medical.   100

我想格式化数据，如下所示：

Emplid     basic.  Hra.      Medical
101.       1000.   200.     
102.       1200.   200.      100

有没有办法使用Oracle SQL生成此输出？

Answer 1

您的问题将通过在SQL中使用PIVOT来解决。

SELECT *
FROM (
    SELECT 
       Empid,Compcode,Amount FROM TableName
) AS S
PIVOT
(
    SUM(Amount)
    FOR Compcode IN ('Basic', 'Hra', 'Medical')
)AS pvt

Answer 2

    SELECT
    x.Emplid,
    MAX(DECODE(x.Compcode, 'Basic.', x.Amount)) AS Basic,
    MAX(DECODE(x.Compcode, 'Hra.', x.Amount)) AS Hra,
    MAX(DECODE(x.Compcode, 'Medical.', x.Amount)) AS Medical,  
    FROM
    (
      SELECT a.Emplid,
             a.Compcode,
             a.Amount
      FROM   your_table a
    )As x
GROUP BY x.Emplid;

不同列下单行中的多行SQL

2 个答案: