Question

在这个选择中我需要和结果IIF表达式，但是当我执行这个查询时只获得第一个IIF语句。有什么建议??感谢

SELECT conto, desconto, date, codoperaio, SUM(IIF(totcasse ='1',SUM(totcasse),0)+
                                              IIF(totcasse ='6',SUM(totcasse*3),0)+
                                              IIF(totcasse ='8',SUM(totcasse*4),0)+
                                              IIF(totcasse ='10',SUM(totcasse*5),0)) as Kilogrammi
FROM dbo.Import
where totcasse BETWEEN 1 and 10
Group by conto, desconto, date,codoperaio, totcasse

Answer 1

如果没有错，你正在寻找这个

SELECT conto,
       desconto,
       date,
       codoperaio,
       Sum(CASE totcasse WHEN '1' THEN totcasse ELSE 0 END) + 
       Sum(CASE totcasse WHEN '6' THEN totcasse * 3 ELSE 0 END) + 
       Sum(CASE totcasse WHEN '8' THEN totcasse * 4 ELSE 0 END) + 
       Sum(CASE totcasse WHEN '10' THEN totcasse * 5 ELSE 0 END)
FROM   dbo.Import
WHERE  totcasse in (1,6,8,10)
GROUP  BY conto,
          desconto,
          date,
          codoperaio

或

SELECT conto,
       desconto,
       date,
       codoperaio,
       Sum(CASE totcasse
             WHEN '1' THEN totcasse 
             WHEN '6' THEN totcasse * 3
             WHEN '8' THEN totcasse * 4
             WHEN '10' THEN totcasse * 5
           END)
FROM   dbo.Import
WHERE  totcasse in (1,6,8,10)
GROUP  BY conto,
          desconto,
          date,
          codoperaio

Answer 2

SELECT conto, desconto, date, codoperaio, IIF(totcasse ='1',SUM(totcasse),0)+
                                              IIF(totcasse ='6',SUM(totcasse*3),0)+
                                              IIF(totcasse ='8',SUM(totcasse*4),0)+
                                              IIF(totcasse ='10',SUM(totcasse*5),0) as Kilogrammi
FROM dbo.Import
where totcasse BETWEEN 1 and 10
Group by conto, desconto, date,codoperaio, totcasse

Answer 3

不要按照小组进行分组。而且，在IIF之后不要使用SUM。我有一个较旧的SQL Server版本，所以我无法测试IIF，但我认为它应该是这样的：

SELECT conto,
       desconto,
       date,
       codoperaio,
       Sum(iif( totcasse = 1, totcasse, 
           iif( totcasse = 6, totcasse * 3, 
           iif( totcasse = 8, totcasse * 4, 
           iif( totcasse = 10, totcasse * 5, 0))))) as Kilogrammi
FROM   dbo.Import
WHERE  totcasse >= 1 
  AND  totcasse <= 10
GROUP  BY conto,
          desconto,
          date,
          codoperaio

确保没有可能的值，例如3或9 totcasse。否则他们不会被计算出来。或者，用totcasse替换0。

Answer 4

使用CASE语句

尝试此操作

SELECT conto, desconto, date, codoperaio,
        SUM(CASE totcasse
            WHEN '1' THEN totcasse
            WHEN '6' THEN totcasse*3
            WHEN '8' THEN totcasse*4
            WHEN '10' THEN totcasse*5
            ELSE 0 END
        )as Kilogrammi
FROM dbo.Import
where totcasse BETWEEN 1 and 10
Group by conto, desconto, date,codoperaio, totcasse

Answer 5

查询中有三个明显的问题。

您无法嵌套SUM()功能。
totcasse中有group by，但您似乎想将它们合并为一行。
您的WHERE子句将totcasse视为数字而不是字符串。

此外，case是编写查询的更好方式，而不是iif()。（case是ANSI标准SQL; iif()在SQL Server中是为了向后兼容MS Access以及谁想要倒退？）

我猜这是您想要的查询查询：

SELECT conto, desconto, date, codoperaio,
       SUM(CASE WHEN totcasse ='1' THEN totcasse
                WHEN totcasse ='6' THEN totcasse * 3
                WHEN totcasse ='8' THEN totcasse * 4
                WHEN totcasse ='10' THEN totcasse * 5
                ELSE 0
           END) as Kilogrammi
FROM dbo.Import
where totcasse IN ('1', '2', '3', '4', '5', '6', '7', '8', '9', '10')
Group by conto, desconto, date, codoperaio;

请注意WHERE子句。当您使用字符串时，表达式为：

where totcasse between '1' and '10'

基本上只返回以'10'开头的值。不要在比较中混合类型。

Answer 6

  SELECT conto＆＃xA;，desconto＆＃xA;，date＆＃xA;，codoperaio＆＃xA;，SUM（CASE totcasse＆＃xA; WHEN 1 THEN totcasse＆＃xA; WHEN 6TEN totcasse * 3＆＃xA ;当8时那么* 4＆＃xA; 10时那么* 5＆＃xA; ELSE 0＆＃xA; END）AS Kilogrammi＆＃xA; FROM dbo.Import＆＃xA;其中包括1和10之间＆＃xA;按conto分组，desconto，date，codoperaio＆＃xA;

＆＃xA;

SUM IIF表达结果

6 个答案: