Question

我执行此类查询时返回表中的重复行，这有什么问题?????

Declare @Keyword AS NVARCHAR(MAX) 
Set @Keyword = 'scale'


select DISTINCT * from (
    SELECT DISTINCT                           dbo.Product_Search.Product_Name,     dbo.Product_Search.Product_Code,
                              dbo.Product_Search.Product_ModelNo,  dbo.Brand_Master.Brand_Name,
                              dbo.Product_Search.Product_Kid,   dbo.Product_Search.Product_Image, 
                               dbo.Unit_Master.Unit_Name,   dbo.product_Search.CatName, 
                              dbo.product_Search.ProdName,  dbo.product_Search.ProductDescription, ROW_NUMBER() over(order by Product_Kid) as ROW

                    FROM      dbo.Product_Search INNER JOIN
                              dbo.Brand_Master ON dbo.Product_Search.Product_BrandId = dbo.Brand_Master.Brand_Kid LEFT OUTER JOIN
                              dbo.Category_Index_Master ON dbo.Product_Search.Product_CategoryId = dbo.Category_Index_Master.Category_Kid LEFT OUTER JOIN
                              dbo.Unit_Master ON dbo.Product_Search.Product_MarketPriceType = dbo.Unit_Master.Unit_Kid
                    WHERE     (dbo.Product_Search.Product_Name LIKE '%' + @Keyword + '%') 
                        OR      CategoryIndex_Name LIKE '%' + @Keyword + '%'
                        OR      Brand_Name LIKE '%' + @Keyword + '%'
                        OR      Product_ModelNo LIKE '%' + @Keyword + '%'
                        OR      Product_Code LIKE '%' + @Keyword + '%'
)h

Answer 1

ROW_NUMBER： http://msdn.microsoft.com/en-us/library/ms186734.aspx

返回结果分区中行的序号设置，从1开始，每个分区的第一行

因此，您将始终拥有非唯一值。让你试着将ROW向上移动：

SELECT *,ROW_NUMBER() OVER ( ORDER BY Product_Kid ) AS ROW
FROM    ( SELECT DISTINCT
                    dbo.Product_Search.Product_Name ,
                    dbo.Product_Search.Product_Code ,
                    dbo.Product_Search.Product_ModelNo ,
                    dbo.Brand_Master.Brand_Name ,
                    dbo.Product_Search.Product_Kid ,
                    dbo.Product_Search.Product_Image ,
                    dbo.Unit_Master.Unit_Name ,
                    dbo.product_Search.CatName ,
                    dbo.product_Search.ProdName ,
                    dbo.product_Search.ProductDescription
          FROM      dbo.Product_Search
                    INNER JOIN dbo.Brand_Master ON dbo.Product_Search.Product_BrandId = dbo.Brand_Master.Brand_Kid
                    LEFT OUTER JOIN dbo.Category_Index_Master ON dbo.Product_Search.Product_CategoryId = dbo.Category_Index_Master.Category_Kid
                    LEFT OUTER JOIN dbo.Unit_Master ON dbo.Product_Search.Product_MarketPriceType = dbo.Unit_Master.Unit_Kid
          WHERE     ( dbo.Product_Search.Product_Name LIKE '%' + @Keyword
                      + '%' )
                    OR CategoryIndex_Name LIKE '%' + @Keyword + '%'
                    OR Brand_Name LIKE '%' + @Keyword + '%'
                    OR Product_ModelNo LIKE '%' + @Keyword + '%'
                    OR Product_Code LIKE '%' + @Keyword + '%'
        ) h

从表中获取非重复行的问题

1 个答案: