删除具有相同值的列中的重复？

url link 1.247appliances.co.uk [email protected] [email protected] 2.365electrical.com [email protected] [email protected] [email protected] [email protected]|[email protected] [email protected]

这里呼吁栏时使用DISTINCT是样品

SELECT DISTINCT column_name,column_name 
FROM table_name;

来源

2014-02-17 09:39:33

这可能不是你的问题的确切解决方案，但我试图给你一个想法。干杯

首先创建一个拆分功能

CREATE FUNCTION dbo.Split (@sep CHAR(1), @s VARCHAR(512)) 
RETURNS TABLE 
AS 
RETURN (
    WITH Pieces(pn, START, stop) AS (
     SELECT 1, 1, CHARINDEX(@sep, @LinkValue) 
     UNION ALL 
     SELECT pn + 1, stop + 1, CHARINDEX(@sep, @LinkValue, stop + 1) 
     FROM Pieces 
     WHERE stop > 0 
    ) 
    SELECT pn, 
     SUBSTRING(@LinkValue, START, CASE WHEN stop > 0 THEN stop-START ELSE 512 END) AS Link 
    FROM Pieces 
)

我创建了一个临时表的样本数据（使用自己的表）

CREATE TABLE #RemoveDuplicateWords (URL VARCHAR(200), Link VARCHAR(200)) 
    GO 
INSERT INTO #RemoveDuplicateWords(URL,Link) 
SELECT '1.247appliances.co.uk', '[email protected] [email protected]' 
    UNION ALL 
SELECT '2.365electrical.com','[email protected] [email protected] [email protected]' 
GO

最后一个SELECT查询

SELECT 

    rd.URL, 
    st.Link 

FROM #RemoveDuplicateWords rd 
CROSS APPLY dbo.Split(' ',rd.LINK) AS st 
GROUP BY 
    rd.URL, 
    st.Link

来源

2014-02-17 12:37:56

删除具有相同值的列中的重复？

回答

相关问题