拆分字符串并删除最后一个值
Split string and Remove last value
我必须使用 '/'
拆分字符串。
输入:
INTC/MODB2/0241-07133/0010-81717/0010-36299
我必须遍历它,预期输出如下:
INTC/MODB2/0241-07133/0010-81717/0010-36299
INTC/MODB2/0241-07133/0010-81717
INTC/MODB2/0241-07133
INTC/MODB2
INTC
我尝试使用拆分功能,但我能够打印出准确的输出
SELECT value
FROM STRING_SPLIT('INTC/MODB2/0241-07133/0010-81717/0010-36299', '/');
感谢任何帮助
答案:
递归 CTE 是一个选项:
DECLARE @text varchar(1000) = 'INTC/MODB2/0241-07133/0010-81717/0010-36299'
DECLARE @separator varchar(1) = '/';
WITH rCTE AS(
SELECT CHARINDEX(@separator, CONCAT(@text, @separator)) As Position
UNION ALL
SELECT CHARINDEX(@separator, CONCAT(@text, @separator), Position + 1) AS Position
FROM rCTE
WHERE CHARINDEX(@separator, CONCAT(@text, @separator), Position + 1) > 0
)
SELECT SUBSTRING(CONCAT(@text, @separator), 1, Position - 1) AS [Value]
FROM rCTE
ORDER BY Position DESC
OPTION (MAXRECURSION 0)
结果:
Value
-------------------------------------------
INTC/MODB2/0241-07133/0010-81717/0010-36299
INTC/MODB2/0241-07133/0010-81717
INTC/MODB2/0241-07133
INTC/MODB2
INTC
更新:
如果文本存储在table中,则需要不同的语句:
Table:
CREATE TABLE Data (Id int, Notes varchar(1000))
INSERT INTO Data
VALUES
(1, 'INTC/MODB2/0241-07133/0010-81717/0010-36299'),
(2, 'ABCD/0010-36299')
声明:
DECLARE @separator varchar(1) = '/';
WITH rCTE AS(
SELECT
d.Id,
d.Notes,
CHARINDEX(@separator, CONCAT(d.Notes, @separator)) AS Position
FROM Data d
UNION ALL
SELECT
r.Id,
r.Notes,
CHARINDEX(@separator, CONCAT(r.Notes, @separator), r.Position + 1) AS Position
FROM rCTE r
WHERE CHARINDEX(@separator, CONCAT(r.Notes, @separator), r.Position + 1) > 0
)
SELECT Id, SUBSTRING(CONCAT(Notes, @separator), 1, Position - 1) AS [Value]
FROM rCTE
ORDER BY Id, Position DESC
OPTION (MAXRECURSION 0)
我必须使用 '/'
拆分字符串。
输入:
INTC/MODB2/0241-07133/0010-81717/0010-36299
我必须遍历它,预期输出如下:
INTC/MODB2/0241-07133/0010-81717/0010-36299
INTC/MODB2/0241-07133/0010-81717
INTC/MODB2/0241-07133
INTC/MODB2
INTC
我尝试使用拆分功能,但我能够打印出准确的输出
SELECT value
FROM STRING_SPLIT('INTC/MODB2/0241-07133/0010-81717/0010-36299', '/');
感谢任何帮助
答案:
递归 CTE 是一个选项:
DECLARE @text varchar(1000) = 'INTC/MODB2/0241-07133/0010-81717/0010-36299'
DECLARE @separator varchar(1) = '/';
WITH rCTE AS(
SELECT CHARINDEX(@separator, CONCAT(@text, @separator)) As Position
UNION ALL
SELECT CHARINDEX(@separator, CONCAT(@text, @separator), Position + 1) AS Position
FROM rCTE
WHERE CHARINDEX(@separator, CONCAT(@text, @separator), Position + 1) > 0
)
SELECT SUBSTRING(CONCAT(@text, @separator), 1, Position - 1) AS [Value]
FROM rCTE
ORDER BY Position DESC
OPTION (MAXRECURSION 0)
结果:
Value
-------------------------------------------
INTC/MODB2/0241-07133/0010-81717/0010-36299
INTC/MODB2/0241-07133/0010-81717
INTC/MODB2/0241-07133
INTC/MODB2
INTC
更新:
如果文本存储在table中,则需要不同的语句:
Table:
CREATE TABLE Data (Id int, Notes varchar(1000))
INSERT INTO Data
VALUES
(1, 'INTC/MODB2/0241-07133/0010-81717/0010-36299'),
(2, 'ABCD/0010-36299')
声明:
DECLARE @separator varchar(1) = '/';
WITH rCTE AS(
SELECT
d.Id,
d.Notes,
CHARINDEX(@separator, CONCAT(d.Notes, @separator)) AS Position
FROM Data d
UNION ALL
SELECT
r.Id,
r.Notes,
CHARINDEX(@separator, CONCAT(r.Notes, @separator), r.Position + 1) AS Position
FROM rCTE r
WHERE CHARINDEX(@separator, CONCAT(r.Notes, @separator), r.Position + 1) > 0
)
SELECT Id, SUBSTRING(CONCAT(Notes, @separator), 1, Position - 1) AS [Value]
FROM rCTE
ORDER BY Id, Position DESC
OPTION (MAXRECURSION 0)