字符串轉換爲逗號分隔值

Question

我有一個表，如下

DECLARE @T TABLE(Data VARCHAR(MAX)) 
INSERT INTO @T 
SELECT 'SQL' UNION ALL SELECT 'JOB' 

需要如下的輸出，但不使用任何UDF。

Data String 
------------ 
SQL S,Q,L 
JOB J,O,B 

請幫我在這

Answer 1

當然，你可以:)。你可以使它更短...

DECLARE @T TABLE(Data VARCHAR(MAX)) 
INSERT INTO @T 
SELECT 'SQL' UNION ALL SELECT 'JOB';  

With cte as 
(
    Select Data, Len(Data) DataLength, 1 level 
    From @t 
    Union All 
    Select Data, DataLength - 1, level + 1 
    From cte 
    Where DataLength > 1 
), 
cte2 as 
(
    Select Data, SUBSTRING(Data, DataLength, 1) DataLetter, level 
    From cte 
), 
cte3 as 
(
    Select Data, 
     (
      SELECT DataLetter + ',' 
      FROM cte2 c 
      Where c.Data = cte2.Data 
      Order By level desc 
      FOR XML PATH(''), TYPE 

     ).value('.[1]', 'NVARCHAR(1000)') DataComa 
    From cte2 
    Group By Data 
) 
Select Data, substring(DataComa, 1, Len(DataComa) - 1) Data2 
From cte3 

Answer 2

這是很容易做的UDF。 但是，如果你想出來UDF，我能想到的只有一個辦法是

像這樣

DECLARE @T TABLE(Data VARCHAR(MAX)) 
INSERT INTO @T 
SELECT 'SQL' UNION ALL SELECT 'JOB' 

select replace(replace(replace(data,'S','S,'),'Q','Q,'),'L','L,') from @T 

在這裏你必須更換所有的26個字符與替換功能。即， 'A' 與 'A'， 'B' 與 'B' .... '' 與 'Z Z，'

Answer 3

使用I用於INITCAP函數這裏http://beyondrelational.com/modules/2/blogs/70/posts/10901/tsql-initcap-function-convert-a-string-to-proper-case.aspx

DECLARE @T TABLE(Data VARCHAR(MAX)) 
INSERT INTO @T 
SELECT 'SQL' UNION ALL SELECT 'JOB' 

select data, 
     upper(replace(replace(replace(replace(replace(replace(replace(
     replace(replace(replace(replace(replace(replace(replace(
     replace(replace(replace(replace(replace(replace(replace(
     replace(replace(replace(replace(replace(
      ' '+data , 
     ' a','a,'),' b','b,'),'c','c,'),'d','d,'),'e','e,'),'f','f,'), 
     ' g','g,'),' h','h,'),'i','i,'),'j','j,'),'k','k,'),'l','l,'), 
     ' m','m,'),' n','n,'),'o','o,'),'p','p,'),'q','q,'),'r','r,'), 
     ' s','s,'),' t','t,'),'u','u,'),'v','v,'),'w','w,'),'x','x,'), 
     ' y','y,'),' z','z,')) as splitted_data 
from 
    @t 

相同的方法

Answer 4

遲到了，但這裏有一個稍短的版本：

DECLARE @T TABLE(Data VARCHAR(MAX)); 

INSERT INTO @T VALUES('SQL'),('JOB'),('FLOOB'); 

;WITH n AS (SELECT TOP (SELECT MAX(LEN(Data)) FROM @T) 
    n = ROW_NUMBER() OVER (ORDER BY [object_id]) FROM sys.all_objects 
), 
t AS (SELECT n, Data, Letter = SUBSTRING(t.Data, n.n, 1) FROM n 
    INNER JOIN @T AS t ON SUBSTRING(t.Data, n.n, 1) > '' 
) 
SELECT Data, STUFF((SELECT ',' + letter FROM t AS t2 
    WHERE t2.Data = t.Data ORDER BY t2.n FOR XML PATH(''), 
    TYPE).value('.[1]', 'varchar(max)'), 1, 1, '') 
FROM t GROUP BY Data; 

結果：

FLOOB F,L,O,O,B 
JOB  J,O,B 
SQL  S,Q,L