数と単一の列

Question

の個々の値を削除し、私はテーブルを持っていると私は、このために、|hで,hを交換する必要があり、この

create table items_table(url varchar(max),counttotal_urls int,countduplicate_urls int,Unique_urls varchar(max), 
countUnique_urls int) 

insert into items_table(url) values('ht,ha,hb,ha|hc|hy') 
insert into items_table(url) values('ht,hb,hb|hb|hx|hx') 
insert into items_table(url) values('hz,hy,hx,hm|hm,hy') 
insert into items_table(url) values('hz,hy,hx,hm|hm,hy') 

1. のような値が、私はreplace(url,',h','|h')

2. を使用します。私は分離を考慮してtotal_urlsを数える必要があります'|'

3. 私はしたいECKまたは

4. 最後に、私は別の列に更新されますUnique_urlsをカウントする重複を除去することによって、URLののは、私はunique_urlsがUnique_urlのコラムで更新したい

5. 存在する重複してどのように数える

所望の出力：

Answer 1

これはビットであります複雑です。しかし、私はSetベースの方法論でそれを達成しようとしました。

スキーマ：私はいくつかのCTEのとXMLメソッドを使用している

CREATE TABLE #items_table (
    id INT identity 
    ,url VARCHAR(max) 
    ,counttotal_urls INT 
    ,countduplicate_urls INT 
    ,Unique_urls VARCHAR(max) 
    ,countUnique_urls INT 
    ) 

INSERT INTO #items_table (url) 
VALUES ('ht,ha,hb,ha|hc|hy') 

INSERT INTO #items_table (url) 
VALUES ('ht,hb,hb|hb|hx|hx') 

INSERT INTO #items_table (url) 
VALUES ('hz,hy,hx,hm|hm,hy') 

INSERT INTO #items_table (url) 
VALUES ('hy,hx,hm|hm,hy') 

は

;WITH CTE 
AS (
    SELECT url 
     ,REPLACE(',' + url, ',h', '|h') AS url2 
     ,CAST('<M>' 
     + REPLACE(REPLACE(',' + url, ',h', '|h'), '|', '</M><M>') 
     + '</M>' AS XML) AS XML_FLD 
    FROM #items_table 
    ) 
,CTE2 
AS (
    SELECT url 
     ,SUM(CASE 
       WHEN SUBSTRING(url2, number, 1) > '|' 
        THEN 1 
       ELSE 0 
       END)/2 AS counttotal_urls 
    FROM CTE C 
    CROSS APPLY (
     SELECT * 
     FROM master.dbo.spt_values 
     WHERE type = 'P' 
      AND number BETWEEN 1 
       AND LEN(C.url2) 
     ) CA 
    GROUP BY url 
    ) 
,CTE3 
AS (
    SELECT C2.url 
     ,C2.counttotal_urls 
     ,SPLITS.ABC.value('.', 'varchar(MAX)') DUP_URLS 
    FROM CTE2 C2 
    INNER JOIN CTE C ON C2.url = C.url 
    CROSS APPLY C.XML_FLD.nodes('/M') AS SPLITS(ABC) 
    ) 
SELECT url 
    ,counttotal_urls 
    ,counttotal_urls - (COUNT(DISTINCT DUP_URLS) - 1) AS countduplicate_urls 
    ,STUFF((
      SELECT DISTINCT '|' + DUP_URLS 
      FROM CTE3 C 
      WHERE C3.url = C.url 
      FOR XML PATH('') 
      ), 1, 1, '') AS Unique_urls 
FROM CTE3 C3 
GROUP BY url 
    ,counttotal_urls 

結果は

+-------------------+-----------------+---------------------+-----------------+ 
|  url  | counttotal_urls | countduplicate_urls | Unique_urls | 
+-------------------+-----------------+---------------------+-----------------+ 
| ht,ha,hb,ha|hc|hy |    6 |     1 | |ha|hb|hc|ht|hy | 
| ht,hb,hb|hb|hx|hx |    6 |     3 | |hb|ht|hx  | 
| hy,hx,hm|hm,hy |    5 |     2 | |hm|hx|hy  | 
| hz,hy,hx,hm|hm,hy |    6 |     2 | |hm|hx|hy|hz | 
+-------------------+-----------------+---------------------+-----------------+ 

Answer 2

あなたは、文字列分割テーブル値関数を作成する必要がありますでしょう（Found one at aspsnippets）

CREATE FUNCTION ufn_SplitString 
( 
     @Input NVARCHAR(MAX), 
     @Character CHAR(1) 
) 
RETURNS @Output TABLE (
     Item NVARCHAR(1000) 
) 
AS 
BEGIN 
     DECLARE @StartIndex INT, @EndIndex INT 

     SET @StartIndex = 1 
     IF SUBSTRING(@Input, LEN(@Input) - 1, LEN(@Input)) <> @Character 
     BEGIN 
      SET @Input = @Input + @Character 
     END 

     WHILE CHARINDEX(@Character, @Input) > 0 
     BEGIN 
      SET @EndIndex = CHARINDEX(@Character, @Input) 

      INSERT INTO @Output(Item) 
      SELECT SUBSTRING(@Input, @StartIndex, @EndIndex - 1) 

      SET @Input = SUBSTRING(@Input, @EndIndex + 1, LEN(@Input)) 
     END 

     RETURN 
END 
GO 

---

機能が所定の位置に以下のコードは、望ましい結果

;WITH cte_OriginalTable(url) as 
(
SELECT 'ht,ha,hb,ha|hc|hy' UNION ALL 
SELECT 'ht,hb,hb|hb|hx|hx' UNION ALL 
SELECT 'hz,hy,hx,hm|hm,hy' UNION ALL 
SELECT 'hz,hy,hx,hm|hm,hy' 
) 
,cte_SaperaterFix AS 
(
SELECT ROW_NUMBER() OVER(ORDER BY (SELECT NULL)) AS ID, replace(url, ',h', '|h') AS url 
FROM cte_OriginalTable 
) 
,cte_Split as 
(
SELECT o.*, 
    y.Item 
FROM cte_SaperaterFix o 
CROSS APPLY dbo.ufn_SplitString(o.url, '|') y 
) 
,cte_TotalCount AS 
(
SELECT ID,COUNT(ID) AS counttotal_urls, COUNT(DISTINCT Item) AS Unique_urls, COUNT(ID) - COUNT(DISTINCT Item) AS countduplicate_urls 
FROM cte_Split 
GROUP BY ID 
) 
SELECT DISTINCT b.ID, b.url AS URLs, a.CountTotal_URLs, a.CountDuplicate_URLS, STUFF(( SELECT DISTINCT '|' + b1.Item AS [text()] 
         FROM cte_Split b1 
         WHERE 
         b.ID = b1.ID 
         FOR XML PATH('') 
         ), 1, 1, '') AS Unique_URLs, a.Unique_URLs AS CountUnique_URLs 
FROM cte_TotalCount a 
JOIN cte_Split b 
ON a.ID = b.ID