伪列的行上的SQL百分比

Question

我在下面有这个脚本，它显示了我的伪列的百分比。我想介绍另外两列，并获得所有记录的集体数字。

问题是我只得到一个在所有记录上都重复的数字。我做错了什么？

初始脚本

  SELECT ulIDSOrdProductionorTrading
    ,CASE 
        WHEN ulIDSOrdProductionorTrading IN ('Board Split', 'Production - Other')
            THEN 'Production'
        WHEN ulIDSOrdProductionorTrading = 'Trading'
            THEN 'Trading'
        END AS Unit
    ,Score
    ,count(*) * 100.0 / (
        SELECT count(*)
        FROM dbo.Efficiency
        ) AS Percentage
FROM dbo.Efficiency
GROUP BY ulIDSOrdProductionorTrading
    ,Score

添加两列后

    SELECT InvoiceDate
    ,ulIDSOrdProductionorTrading
    ,CASE 
        WHEN ulIDSOrdProductionorTrading IN ('Board Split', 'Production - Other')
            THEN 'Production'
        WHEN ulIDSOrdProductionorTrading = 'Trading'
            THEN 'Trading'
        END AS Unit
    ,Score
    ,COUNT(*) * 100.0 / (
        SELECT COUNT(*) AS Expr1
        FROM dbo.Efficiency
        ) AS Percentage
    ,ucINCInvNumber
    ,ucINCOrderNum
FROM dbo.Efficiency AS Efficiency_1
GROUP BY ulIDSOrdProductionorTrading
    ,Score
    ,InvoiceDate
    ,ucINCInvNumber
    ,ucINCOrderNum

Answer 1

您的伪列使用的查询与您的

组无关

ilIDSOrdProductionorTrading, Score, InvoiceDate, ucINCInvNumber, ucINCOrderNum

因为您在该查询中没有where或group by和having combo。您需要在伪列中过滤查询，以确保您对给定组的count具有正确的Efficiency。伪列的唯一变化是外部查询组的count除以常量。