数字不按顺序排序

Question

我正在尝试使用 asp.net 和 c# 在 sql 中按顺序（从 1 到 ...）对列进行排序。在做了一些研究之后，我似乎需要将 SQL 服务器中的列类型更改为 int 但是这是不可能的，因为该列正在存储门牌号，我最终可能会得到门牌号 10a（例如）所以当前设置为varchar。因此，它不能正确地对列进行排序。我已经尝试将相关列转换为 int，但是在运行应用程序时，我在 gridview 中遇到了它的绑定错误，我也尝试了其他的 * 1，但在运行 [=15 时仍然在绑定部分出现错误=]

SQL声明

    SELECT DISTINCT tblcontact.ContactID, tblcontact.Forename, tblcontact.Surname, 
    tbladdress.[House Number], tbladdress.AddressLine1, tbladdress.AddressLine2, 
    tblcontact.[Business Name] FROM tblcontact INNER JOIN tbladdress ON tblcontact.AddressID = tbladdress.AddressID 
    LEFT OUTER JOIN tblDonate 
    ON tblcontact.ContactID = tblDonate.ContactID 
    WHERE (tbladdress.CollectionArea = @CollectionArea) AND 
(tbladdress.AddressLine1 = @drpCollectionStreet) 
    ORDER BY tbladdress.[House Number] ASC

网格视图标记

                                    <asp:TemplateField HeaderText="House Number">
                                        <EditItemTemplate>
                                            <asp:TextBox ID="txtHouseNum" runat="server" Text='<%# Bind("[House Number]") %>'></asp:TextBox>
                                        </EditItemTemplate>
                                        <ItemTemplate>
                                            <asp:Label ID="lblHouseNum" runat="server" Text='<%# Bind("[House Number]") %>'></asp:Label>
                                        </ItemTemplate>
                                    </asp:TemplateField>

这是一个如何排序的例子

这就是我转换为 int 的方式，它在 SQL 中排序良好，但我在 Bind 上遇到错误（上图）

SELECT DISTINCT tblcontact.ContactID, tblcontact.Forename, tblcontact.Surname, cast(tbladdress.[House Number] as int), 
tbladdress.AddressLine1, tbladdress.AddressLine2, tblcontact.[Business Name] 
FROM tblcontact INNER JOIN tbladdress ON tblcontact.AddressID = tbladdress.AddressID 
LEFT OUTER JOIN tblDonate ON tblcontact.ContactID = tblDonate.ContactID 
WHERE (tbladdress.CollectionArea = 'Queens Park') AND (tbladdress.AddressLine1 = 'Kings Road') 
ORDER BY cast(tbladdress.[House Number] as int)

运行时出错

这是运行时的错误（这个最有意义）

 "House Number is neither a DataColumn nor a DataRelation for table DefaultView."}

Answer 1

要按数字对街道号码进行排序，您需要将它们转换为数字。当然，麻烦在于像“10a”这样的字符串不能转换为 INT。答案是从 [House Number] 列中提取数字字符，然后进行转换。以下为 ORDER BY 子句执行此操作：

... 
ORDER BY CAST(SUBSTRING(tbladdress.[House Number], PATINDEX('%[0-9]%', tbladdress.[House Number]),
                 1 + PATINDEX('%[0-9][^0-9]%', tbladdress.[House Number] + ' ') -
                 PATINDEX('%[0-9]%',tbladdress.[House Number])) AS INT)

请参阅 http://blogs.lessthandot.com/index.php/DataMgmt/DataDesign/extracting-numbers-with-sql-server/ 了解复杂公式的工作原理。

Answer 2

从 select column list 中删除 cast。仅保留 order by 仍然会排序结果。

select A.ContactID,
                A.Forename,
                A.Surname,
                A.[House Number],
                A.AddressLine1,
                A.AddressLine2,
                A.[Business Name] from (
SELECT DISTINCT tblcontact.ContactID,
                tblcontact.Forename,
                tblcontact.Surname,
                tbladdress.[House Number],
                tbladdress.AddressLine1,
                tbladdress.AddressLine2,
                tblcontact.[Business Name]
FROM   tblcontact
       INNER JOIN tbladdress
               ON tblcontact.AddressID = tbladdress.AddressID
       LEFT OUTER JOIN tblDonate
                    ON tblcontact.ContactID = tblDonate.ContactID
WHERE  ( tbladdress.CollectionArea = 'Queens Park' )
       AND ( tbladdress.AddressLine1 = 'Kings Road' )) A
ORDER  BY Cast(tbladdress.[House Number] AS INT)

Answer 3

正确答案是 JohnS 和 NoDisplayName 答案的组合，谢谢你们

select A.ContactID,
                A.Forename,
                A.Surname,
                A.[House Number],
                A.AddressLine1,
                A.AddressLine2,
                A.[Business Name] from (
SELECT DISTINCT tblcontact.ContactID,
                tblcontact.Forename,
                tblcontact.Surname,
                tbladdress.[House Number],
                tbladdress.AddressLine1,
                tbladdress.AddressLine2,
                tblcontact.[Business Name]
FROM   tblcontact
       INNER JOIN tbladdress
               ON tblcontact.AddressID = tbladdress.AddressID
       LEFT OUTER JOIN tblDonate
                    ON tblcontact.ContactID = tblDonate.ContactID
WHERE  ( tbladdress.CollectionArea = 'Queens Park' )
       AND ( tbladdress.AddressLine1 = 'Kings Road' )) A
       ORDER BY CAST(SUBSTRING(A.[House Number], PATINDEX('%[0-9]%', A.[House Number]),
                 1 + PATINDEX('%[0-9][^0-9]%', A.[House Number] + ' ') -
                 PATINDEX('%[0-9]%',A.[House Number])) AS INT)

数字不按顺序排序

numbers not sorting in order

c#

sql-server

asp.net

gridview