SQL更新带有字符串值列表的ID的字符串列表

我想在存储过程中更新以字符串逗号分隔的值列表的字符串逗号分隔列表中传递的ID列表。SQL更新带有字符串值列表的ID的字符串列表

那么我怎样才能更新每个ID与它的相应名称从2列表。例如：

ids = "1, 2, 4 ,8"; 
names = "sam, john, sarah ,barry"; 

ALTER PROCEDURE [dbo].[update_work] 
    @ids nvarchar(MAX), 
    @names nvarchar(MAX) 
AS 
BEGIN 
    ??? 
END

来源

2016-01-01 Khairy Abd El-Zaher

解决您的数据结构来存储列出表格，而不是字符串。 –

我想他是从UI中获取的字符串作为用户选择列表。请检查'CROSS APPLY'。更多可以在这里找到http://stackoverflow.com/questions/5493510/turning-a-comma-separated-string-into-individual-rows – minatverma

我从jQuery UI中获取数据控制，所以我不能改变它，所以我怎么能更新每个ID与它的相应名称从2列表。 –

正确的方法是使用表值参数。

但是你说你不能这样我会用SUBSTRING和tally表来拆分逗号分隔的字符串。

结构：

CREATE TABLE #tab(id INT, name VARCHAR(100)); 

INSERT INTO #tab(id, name) 
VALUES (1, 'a'), (2, 'b'), (3, 'c'), (4, 'd'), 
     (5, 'e'), (6, 'f'), (7, 'g'), (8, 'h'), (9, 'i');

程序（临时过程，因为SEDE不允许创建正常数据库对象）：

CREATE PROCEDURE #update_work @ids nvarchar(MAX), @names nvarchar(MAX) 
AS 
BEGIN 
;WITH cte AS 
(SELECT TOP 1000 rn = ROW_NUMBER() OVER(ORDER BY 1/0) 
    FROM master..spt_values 
), cte2 AS 
(SELECT [val] = SUBSTRING(',' + @ids + ',', rn + 1, 
        CHARINDEX(',', ',' + @ids + ',', rn + 1) - rn -1) 
     ,[r] = ROW_NUMBER() OVER(ORDER BY rn) 
     ,[type] = 'id' 
    FROM cte 
    WHERE rn <= LEN(',' + @ids + ',') - 1 
    AND SUBSTRING(',' + @ids + ',', rn, 1) = ',' 
    UNION ALL 
    SELECT [val] = SUBSTRING(',' + @names + ',', rn + 1, 
        CHARINDEX(',', ',' + @names + ',', rn + 1) - rn -1) 
     ,[r] = ROW_NUMBER() OVER(ORDER BY rn) 
     ,[type] = 'name' 
    FROM cte 
    WHERE rn <= LEN(',' + @names + ',') - 1 
    AND SUBSTRING(',' + @names + ',', rn, 1) = ',' 
), cte3 AS 
(SELECT [id] = cte2.val, [name] = cte2a.val 
    FROM cte2 
    JOIN cte2 AS cte2a 
    ON cte2.[r] = cte2a.[r] 
    AND cte2.[type] = 'id' 
    AND cte2a.[type] = 'name' 
) 
UPDATE t 
SET name = c3.name 
FROM #tab AS t 
JOIN cte3 c3 ON t.id = c3.id; 
END;

测试：

EXEC#update_work 
    @ids = '1, 2, 4 ,8', 
    @names = 'sam, john, sarah ,barry'; 

SELECT * 
FROM #tab;

LiveDemo

输出：

╔════╦═══════╗ 
║ id ║ name ║ 
╠════╬═══════╣ 
║ 1 ║ sam ║ 
║ 2 ║ john ║ 
║ 3 ║ c  ║ 
║ 4 ║ sarah ║ 
║ 5 ║ e  ║ 
║ 6 ║ f  ║ 
║ 7 ║ g  ║ 
║ 8 ║ barry ║ 
║ 9 ║ i  ║ 
╚════╩═══════╝

来源

2016-01-01 20:20:40 lad2025

SQL更新带有字符串值列表的ID的字符串列表

回答

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