SQL Server 2012 中的 STRING_SPLIT [英] STRING_SPLIT in SQL Server 2012

问题描述

我有这个参数

@ID varchar = '1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20' 

我想做点什么来分割逗号分隔的值.

I want to do something to split the comma-separated values.

string_split 函数不起作用，我收到此错误:

The string_split function doesn't work and I get this error:

STRING_SPLIT 函数仅在兼容级别 130 下可用

The STRING_SPLIT function is available only under compatibility level 130

并且我尝试更改我的数据库并将兼容性设置为 130，但我无权进行此更改.

and I try to alter my database and set the compatibility to 130 but I don't have a permission for this change.

推荐答案

其他方法也是使用 XML 方法和 CROSS APPLY 来拆分逗号分隔数据:

Other approach is too use XML Method with CROSS APPLY to split your Comma Separated Data :

SELECT Split.a.value('.', 'NVARCHAR(MAX)') DATA
FROM
(
    SELECT CAST('<X>'+REPLACE(@ID, ',', '</X><X>')+'</X>' AS XML) AS String
) AS A
CROSS APPLY String.nodes('/X') AS Split(a);

结果:

DATA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

示例:

DECLARE @ID NVARCHAR(300)= '1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20';
DECLARE @Marks NVARCHAR(300)= '0,1,2,5,8,9,4,6,7,3,5,2,7,1,9,4,0,2,5,0';
DECLARE @StudentsMark TABLE
(id    NVARCHAR(300),
 marks NVARCHAR(300)
); 
--insert into @StudentsMark 
;WITH CTE
     AS (
     SELECT Split.a.value('.', 'NVARCHAR(MAX)') id,
            ROW_NUMBER() OVER(ORDER BY
                             (
                                 SELECT NULL
                             )) RN
     FROM
     (
         SELECT CAST('<X>'+REPLACE(@ID, ',', '</X><X>')+'</X>' AS XML) AS String
     ) AS A
     CROSS APPLY String.nodes('/X') AS Split(a)),
     CTE1
     AS (
     SELECT Split.a.value('.', 'NVARCHAR(MAX)') marks,
            ROW_NUMBER() OVER(ORDER BY
                             (
                                 SELECT NULL
                             )) RN
     FROM
     (
         SELECT CAST('<X>'+REPLACE(@Marks, ',', '</X><X>')+'</X>' AS XML) AS String
     ) AS A
     CROSS APPLY String.nodes('/X') AS Split(a))
     INSERT INTO @StudentsMark
            SELECT C.id,
                   C1.marks
            FROM CTE C
                 LEFT JOIN CTE1 C1 ON C1.RN = C.RN;
SELECT *
FROM @StudentsMark;

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