用于Visual Studio的TableAdapter的查询生成器的NOT IN语句 [英] NOT IN statement for Visual Studio's Query Builder for TableAdapter

问题描述

我想在查询生成器中使用Visual Studio 2008构建的TableAdapter来实现对TableAdapter的查询，类似于以下内容(MSSQL 2008):

I want to realize a query with the Visual Studio 2008 build in Query Builder for a TableAdapter similar like following (MSSQL 2008):

select * from [MyDB].[dbo].[MyView] where UNIQUE_ID NOT IN ('MyUniqueID1','MyUniqueID2')

如何在查询中设置过滤器，以便使用myTableAdapter.GetDataExceptUniqueIds(...)函数进行调用?

How do I have to set the Filter in my query in order to call it with the myTableAdapter.GetDataExceptUniqueIds(...) function?

我试图将过滤器设置为NOT IN (@ids)并用

I tried to set the filter to NOT IN (@ids) and called it with

string[] uniqueIds = ...;
myTableAdapter.GetDataExceptUniqueIds(String.Join("','", uniqueIds));

和

StringBuilder sb = new StringBuilder("'");
sb.Append(String.Join("','", uniqueIds));
sb.Append("'");
return myTableAdapter.GetDataExceptUniqueIds(sb.ToString());

但都失败了

推荐答案

您不能在SELECT ...中使用动态参数，而[NOT] IN列表中

You cannot use dynamic parameters in a SELECT ... WHERE [NOT] IN list

解决方法:

创建一个表函数，类似于以下函数:

Create a table function, similar to the following function:

CREATE FUNCTION dbo.ParmsToTable(@Parameters varchar(4000))
returns @result TABLE (Value varchar(100))
AS  
begin
     DECLARE @pTable table
          (
          Value varchar(100)
          )

     DECLARE @Value varchar(100), @Pos int

     SET @Parameters = LTRIM(RTRIM(@Parameters))+ ','
     SET @Pos = CHARINDEX(',', @Parameters, 1)

     IF REPLACE(@Parameters, ',', '') <> ''
     BEGIN
          WHILE @Pos > 0
          BEGIN
               SET @Value = LTRIM(RTRIM(LEFT(@Parameters, @Pos - 1)))
               IF @Value <> ''
               BEGIN
                    INSERT INTO @pTable (Value) VALUES (@Value) 
               END
               SET @Parameters = RIGHT(@Parameters, LEN(@Parameters) - @Pos)
               SET @Pos = CHARINDEX(',', @Parameters, 1)

          END
     END    
     INSERT @result
     SELECT value
        FROM @pTable 
     RETURN
END    

并按如下所示更改TableAdapter:

and change your TableAdapter as follows:

select * from [MyDB].[dbo].[MyView] where UNIQUE_ID NOT IN
(select value from dbo.ParmsToTable(@p)  )

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