从 SQL Server 中的列中提取值

Question

如何从 SQL Server 中的列中提取以下值：

"ICMP (type: 8 / subtype: 0)" -----> "8" and "0"
"ICMP (type: 0 / subtype: 19)" -----> "0" and "19"
"ICMP (type: 11 / subtype: 5)" -----> "11" and "5"
"ICMP (type: 12 / subtype: 30)" -----> "12" and "30"

我尝试了不同的函数 - charindex()、left()、right() 但我失败了。

Answer 1

SQL Server 不擅长字符串操作。 但cross apply有点帮助：

select left(v.str1, charindex(' ', v.str1)) as type, replace(v.str2, ')', '') as subtype
from (values ('ICMP (type: 8 / subtype: 0)'), ('ICMP (type: 12 / subtype: 30)')) t(field) cross apply
     (values ( stuff(field, 1, charindex('type:', field) + 5, ''),
               stuff(field, 1, charindex('subtype:', field) + 8, '')
             )
     ) v(str1, str2);