Question

Date        Name    Charge
1/15/2015   Alpha   3.39
2/15/2015   Alpha   3.39
2/15/2015   Beta    3.39
2/15/2015   Gamma   2
3/15/2015   Gamma   3
3/15/2015   Alpha   5
4/15/2015   Beta    3.39

以上是Access中的示例表。我的目的是捕获所有对于＆＃39; Charge＆＃39;具有严格值3.39的唯一名称，但如果任何名称的值不是3.39，则查询将根本不返回名称。例如，基于样本数据，正确写入查询将仅导致＆＃34; Beta＆＃34;出现。

如何针对上述要求编写SQL查询？

Answer 1

select distinct Name from thisTable s1
left join
(select * from thisTable where Charge<>3.39) s2
on
s1.Name=s2.Name
where
s2.Name is null
and
s1.Charge=3.39

Answer 2

嗯，我得到了答案，但是另一种方式：

SELECT [Name] FROM dbo.charges
WHERE [Charge] = '3.39'
GROUP BY [Name]
HAVING [Name] NOT IN (
    SELECT [Name] FROM dbo.charges
    WHERE [Charge] <> '3.39'
    GROUP BY [Name]
)

好的，那是SQL Server版本，这里的Access版本略有不同：

SELECT [Name] FROM charges
WHERE [Charge] = 3.39
GROUP BY [Name]
HAVING [Name] NOT IN (
    SELECT [Name] FROM charges
    WHERE [Charge] <> 3.39
    GROUP BY [Name]
)

这里的表名是＆＃34;费用＆＃34; - 将表格和字段名称更改为您的表格和字段名称，但根据上述对话，我不确定这是否是您所需要的。

以下是添加了参数的更新：

PARAMETERS [Start Date] DateTime, [End Date] DateTime; 
SELECT charges.Name
FROM charges
WHERE (((charges.Date)>=[Start Date] And (charges.Date)<=[End Date]) AND ((charges.Charge)=3.39))
GROUP BY charges.Name
HAVING (((charges.Name) Not In (SELECT [charges].[Name] FROM [charges] WHERE [charges].[Charge] <> 3.39 GROUP BY [charges].[Name])));

访问所有记录的SQL查询（非零）

2 个答案: