Question

有人可以建议我从SQL Server表中的0459字符串中提取0460和(&0459&/&0460&)*100的方法吗？

我应该能够拉出夹在两对＆符号之间的两根琴弦。

提前致谢。

Answer 1

如果您确定总有两对＆符号，您可以像这样提取两个字符串

declare @s varchar(max) = '(&0459&/&0460&)*100'

declare @first int = charindex('&', @s)
declare @second int = charindex('&', @s, @first+1)
declare @third int = charindex('&', @s, @second+1)
declare @fourth int = charindex('&', @s, @third+1)

select substring(@s, @first+1, @second-@first-1)
select substring(@s, @third+1, @fourth-@third-1)

Answer 2

此解决方案将在＆＃39;＆amp;＆＃39;

之间绘制第1和第3个值

;WITH CTE AS
(
     SELECT t.c.value('.', 'VARCHAR(2000)') v,
     rn = row_number() over (order by (select 1))-1
     FROM (
         SELECT x = CAST('<t>' + 
               REPLACE('(&0459&/&0460&)*100', '&', '</t><t>') + '</t>' AS XML)
     ) a
     CROSS APPLY x.nodes('/t') t(c)
)
SELECT v FROM CTE
WHERE rn in (1,3)

结果：

0459
0460

在SQL Server字符串中的字符之间提取字符串

2 个答案: