刪除具有相同值的列中的重複？

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]

這裏呼籲欄時使用DISTINCT是樣品

SELECT DISTINCT column_name,column_name 
FROM table_name;

來源

2014-02-17 09:39:33

這可能不是你的問題的確切解決方案，但我試圖給你一個想法。乾杯

首先創建一個拆分功能

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 
)

我創建了一個臨時表的樣本數據（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

最後一個SELECT查詢

SELECT 

    rd.URL, 
    st.Link 

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

來源

2014-02-17 12:37:56

刪除具有相同值的列中的重複？

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