我收到一条消息,说表达式是无效标识符。我还收到消息说单个 group by 无效。请提出替代方案。
我有以下 Oracle SQL 语句:
SELECT SUM(CASE
WHEN PDRVARIANCE >= -1 then '1'
WHEN PDRVARIANCE <-1 then '0'
END)
/ count(*)
* 100 as PercentCompliance ,
TO_CHAR (ACTUALFINISHDATE,'MM/YY') AS DCSMONTH
FROM ACTIVITIES
WHERE DCSMONTH IS NOT NULL
GROUP BY DCSMONTH
现有数据将是这样的......
Variance Month
20 10/12
3.2 10/12
-4.2 10/12
-27.8 10/12
13 11/12
3 11/12
-1.2 12/12
-2 12/12
期望的结果是对每个方差条件和按月分组的“真”与“假”的百分比,并将其显示为...
Percent Month
50 10/12
100 11/12
0 12/12