在 sql 2000 中存储大于 4000 的 nvarchar

Question

我正在尝试使用 @SumSQL var type nvarchar 4000 执行 sql，当我在存储过程中输入的参数值大于特定值（如“11”）时，程序返回 sql 错误...问题出在当 sql 将 char 存储在 var @SumSQL 中时，它的大小变得大于 4000，然后它什么都不存储，在 sql 2008 中，如果我将 nvarchar (4000) 的类型更改为 nvarchar (max) 它工作得很好，但这没有t 存在于 sql 2000 中，这里是存储的 sql 部分：

DECLARE @SQL AS [nvarchar](4000)     
            DECLARE @SumSQL AS [nvarchar](4000)       
            SET @SumSQL = ''     
            SET @SQL = ' ALTER TABLE [#t] ADD [TotalRemainingPrice] [FLOAT], [TotalRemainingQnt] [FLOAT], [MatUnitName] [nvarchar](256) COLLATE ARABIC_CI_AI, [AvgQty] [FLOAT], [AvgPrice] [FLOAT], [Price] [FLOAT]'     
            WHILE @PeriodCounter < @NumOfPeriods      
            BEGIN       
                SET @SQL = @SQL + ', [P' + CAST((@PeriodCounter+1) AS [nvarchar](10)) + '] [FLOAT]'        
                SET @SQL = @SQL + ', [r' + CAST((@PeriodCounter+1) AS [nvarchar](10)) + '] [FLOAT]'        

                SET @PeriodStart = @PeriodCounter * @PeriodLength      
                SET @PeriodEnd = @PeriodStart + @PeriodLength      

                IF @PeriodCounter = (@NumOfPeriods - 1) 
                        SET @SumSQL = @SumSQL +  ', ISNULL((SELECT SUM( [Remaining]) FROM [#In_Result] [t_inner] WHERE  [t_inner].[MatID] = [t_outer].[MatID] AND [t_inner].[Age] >' + CAST(@PeriodStart AS [nvarchar](10)) + '), 0)'      
                                    +    
                                    ', ISNULL((SELECT SUM( [Price] * [Remaining]) FROM [#In_Result] [t_inner] WHERE [t_inner].[MatID] = [t_outer].[MatID] AND [t_inner].[Age] > ' + CAST(@PeriodStart AS [nvarchar](10)) + '), 0)'       


                ELSE      
                BEGIN      
                    IF @PeriodCounter = 0    

                        SET @SumSQL = @SumSQL +  ', ISNULL((SELECT SUM([Remaining]) FROM [#In_Result] [t_inner] WHERE [t_inner].[MatID] = [t_outer].[MatID] AND ( [t_inner].[Age] = 0 OR ( [t_inner].[Age] > ' + CAST(@PeriodStart AS [nvarchar](10))       
                                    + ' AND [t_inner].[Age] <= ' + CAST(@PeriodEnd AS [nvarchar](10)) + '))), 0)'      
                                    +  
                                    ', ISNULL((SELECT SUM([Price] * [Remaining]) FROM [#In_Result] [t_inner] '      
                                    + ' WHERE [t_inner].[MatID] = [t_outer].[MatID]'      
                                    + ' AND ( [t_inner].[Age] = 0 OR ( [t_inner].[Age] > ' + CAST(@PeriodStart AS [nvarchar](10))       
                                    + ' AND [t_inner].[Age] <= ' + CAST(@PeriodEnd AS [nvarchar](10)) + '))), 0)'      


                    ELSE  

                        SET @SumSQL = @SumSQL +  ' , ISNULL((SELECT SUM([Remaining]) FROM [#In_Result] [t_inner] WHERE [t_inner].[MatID] = [t_outer].[MatID] AND [t_inner].[Age] > ' + CAST(@PeriodStart AS [nvarchar](10)) + ' AND t_inner.Age <= ' + CAST(@PeriodEnd AS [nvarchar](10)) + '), 0)'      
                        + ' , ISNULL((SELECT SUM([Price] * [Remaining]) FROM [#In_Result] [t_inner] WHERE [t_inner].[MatID] = [t_outer].[MatID] AND [t_inner].[Age] > ' + CAST(@PeriodStart AS [nvarchar](10)) + ' AND [t_inner].[Age] <= ' + CAST(@PeriodEnd AS [nvarchar](10)) + '), 0)'      

                END       
                SET @PeriodCounter = @PeriodCounter + 1     
            END 
            EXEC( @SQL) 
            DECLARE @SqlInsert AS [nvarchar](4000)
            DECLARE @SqlInsert2 AS [nvarchar](4000)
            SET @SqlInsert =  ' INSERT INTO [#t] SELECT [MatID], SUM([Price] * [Remaining]), SUM([Remaining]), [MatUnitName], [AvgQty], [AvgPrice], [Price1] ' --+ @SumSQL + 
            SET @SqlInsert2 =  ' FROM [#In_Result] [t_outer] GROUP BY [MatID], [MatUnitName],[AvgQty], [AvgPrice],[Price1]'     
            EXEC( @SqlInsert+@SumSQL+@SqlInsert2)  <--- here is where to execute stored nvarchar ! 

那么在 sql 2000 中存储大于 4000 的 nvarchar 的最佳方法是什么？

Answer 1

如果您真的必须使用 2000 版本，最好的选择是将数据类型从 nvarchar(4000) 更改为 nText。
如果它甚至是远程可能的，你应该迫使你的老板/客户升级到更新版本的 sql server。