SQL 计数不同

发布于 2024-11-14 14:55:44 字数 893 浏览 1 评论 0原文

我有一个 SQL 查询，它只计算并返回正确的值，但是当我将其分割并获取不同区域的计数时，总计数不再与第一个匹配。

这就是我得到的：

表邮政编码，其中包含 CountyID、CountyName 和邮政编码。

包含 ShippingCountry & 的表订单ShippingZip

第一个计数如下所示：

SELECT COUNT(STFO.ShippingZip)
FROM Orders
WHERE 
AND STFO.intShippingCountryID = 202
AND STFO.ShippingZip IN (SELECT DISTINCT ZipCode FROM SwedishZipCodes07)
AND STFO.ShippingZip > 0

在一个示例中，我得到的计数为 3007，这是正确的。在我的下一个计数中，它看起来更像是这样：

SELECT DISTINCT CountyName, CountyID,
(SELECT COUNT(STFO.ShippingZip)
FROM Orders
WHERE 
AND STFO.intShippingCountryID = 202
AND STFO.ShippingZip IN (SELECT DISTINCT ZipCode FROM SwedishZipCodes07 WHERE CountyID = ZipWrapper.CountyID)
AND STFO.ShippingZip > 0) AS Count
FROM Zipcodes ZipWrapper
ORDER BY ZipWrapper.CountyID

在同一个示例中，我现在得到的计数类似于 3018。（在我的示例中，查询被更具体地过滤，但它们都相互匹配，差异在于我的简化示例代码中）。

原文

I have a SQL query that just count and it returns the correct value, but when i slice it up and get the count for the different areas the total count no longer match the first.

This is what i got:

Table zipcodes, that contain a CountyID, CountyName & Zipcode.

Table Orders that contains ShippingCountry & ShippingZip

The first count looks like this:

SELECT COUNT(STFO.ShippingZip)
FROM Orders
WHERE 
AND STFO.intShippingCountryID = 202
AND STFO.ShippingZip IN (SELECT DISTINCT ZipCode FROM SwedishZipCodes07)
AND STFO.ShippingZip > 0

In one example i get this count to 3007 wich is correct.
In my next count it looks more like this:

SELECT DISTINCT CountyName, CountyID,
(SELECT COUNT(STFO.ShippingZip)
FROM Orders
WHERE 
AND STFO.intShippingCountryID = 202
AND STFO.ShippingZip IN (SELECT DISTINCT ZipCode FROM SwedishZipCodes07 WHERE CountyID = ZipWrapper.CountyID)
AND STFO.ShippingZip > 0) AS Count
FROM Zipcodes ZipWrapper
ORDER BY ZipWrapper.CountyID

In the very same example i now get count like 3018.
(In my examples the query is filtered more specific but they both match each other, the differences are in my simplified example code here).

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猫七 2024-11-21 14:55:44

您的 2 个不同的 CountyID 可能具有相同的 STFO.ShippingZip。

这就是为什么在第二个查询中它将添加到每个 CountyID 而在第一个查询中仅添加一次。

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深居我梦 2024-11-21 14:55:44

试试这样：

SELECT CountyName, CountyID,
(
    SELECT COUNT(DISTINCT(STFO.ShippingZip))
    FROM Orders STFO, SwedishZipCodes07
    WHERE STFO.intShippingCountryID = 202
    AND STFO.ShippingZip > 0
    AND STFO.ShippingZip = SwedishZipCodes07.ZipCode
    AND SwedishZipCodes07.CountyId = ZipWrapper.CountyID

) AS Count
FROM Zipcodes ZipWrapper
ORDER BY ZipWrapper.CountyID

Try it this way:

SELECT CountyName, CountyID,
(
    SELECT COUNT(DISTINCT(STFO.ShippingZip))
    FROM Orders STFO, SwedishZipCodes07
    WHERE STFO.intShippingCountryID = 202
    AND STFO.ShippingZip > 0
    AND STFO.ShippingZip = SwedishZipCodes07.ZipCode
    AND SwedishZipCodes07.CountyId = ZipWrapper.CountyID

) AS Count
FROM Zipcodes ZipWrapper
ORDER BY ZipWrapper.CountyID

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