sql - 将 SQL Server 中的字符串拆分为最大长度，将每个字符串作为一行返回

Question

有没有一种方法可以将字符串(来自特定列)拆分为 n 个字符而不破坏单词，并且每个结果都在自己的行中？

示例:

2012-04-24 Change request #3 for the contract per terms and conditions and per John Smith in the PSO department  Customer states terms should be Net 60 not Net 30.  Please review signed contract for this information.

结果:

2012-04-24 Change request #3 for the contract per terms and conditions and per John Smith in the
PSO department  Customer states terms should be Net 60 not Net 30.
Please review signed contract for this information.

我知道我可以使用 charindex 来查找最后一个空格，但我不确定如何获取剩余的空格并将它们作为行返回。

Answer 1

尝试这样的事情。也许您可以创建以下实现的 SQL 函数。

DECLARE @Str VARCHAR(1000)
SET @Str = '2012-04-24 Change request #3 for the contract per terms and conditions and per John Smith in the PSO department  Customer states terms should be Net 60 not Net 30.  Please review signed contract for this information.'

DECLARE @End INT
DECLARE @Split INT

SET @Split = 100

declare @SomeTable table
(
  Content varchar(3000)
)


WHILE (LEN(@Str) > 0)
BEGIN
    IF (LEN(@Str) > @Split)
    BEGIN
        SET @End = LEN(LEFT(@Str, @Split)) - CHARINDEX(' ', REVERSE(LEFT(@Str, @Split)))
        INSERT INTO @SomeTable VALUES (RTRIM(LTRIM(LEFT(LEFT(@Str, @Split), @End))))
        SET @Str = SUBSTRING(@Str, @End + 1, LEN(@Str))
    END
    ELSE
    BEGIN
        INSERT INTO @SomeTable VALUES (RTRIM(LTRIM(@Str)))
        SET @Str = ''
    END
END

SELECT *
FROM @SomeTable

输出将是这样的:

2012-04-24 Change request #3 for the contract per terms and conditions and per John Smith in the
PSO department  Customer states terms should be Net 60 not Net 30.  Please review signed contract
for this information.