Question

我有一个字符串

('emp_id="123",emp_status="New Hire",emp_name="Smith, John A",emp_salary="2000",emp_state="VA"')

如何将其拆分为

Column Name  Value
emp_id       123
emp_status   New Hire
emp_name     Smith, John A (Note: This has a comma within the string)
emp_salary   2000
emp_state    VA

Answer 1

解决此问题的一种方法是使用递归CTE。它可能不是最快的方式，但它是我在这种特殊情况下找到的最简单的方法：

DECLARE @Source varchar(200) = 'emp_id="123",emp_status="New Hire",emp_name="Smith, John A",emp_salary="2000",emp_state="VA"'

;WITH CTE AS
(
    SELECT LEFT(@Source, CHARINDEX('",', @Source)) as val, 
           RIGHT(@Source, LEN(@Source) - CHARINDEX('",', @Source)-1) as string 

    UNION ALL

    SELECT  CASE WHEN CHARINDEX('",', string) > 0 THEN
                LEFT(String, CHARINDEX('",', string))
            ELSE
                String
            END  as val,
            CASE WHEN CHARINDEX('",', string) > 0 THEN
                RIGHT(string, LEN(string) - CHARINDEX('",', string)-1) 
            ELSE
                ''
            END as string
    FROM CTE
    WHERE LEN(string) > 0
)

SELECT LEFT(val, CHARINDEX('=', val)-1) As [Column Name], 
       REPLACE(RIGHT(val, LEN(val) - CHARINDEX('=', val) -1 ), '"', '') As Value
FROM CTE

结果：

Column Name     Value
emp_id          123
emp_status      New Hire
emp_name        Smith, John A
emp_salary      2000
emp_state       VA

将逗号分隔的字符串解析为多行

1 个答案: