本文介绍了两个字符之间的变长子串的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
数据如下所示:
Initiative: Credible Sources;
Initiative: Just in Time;
Initiative: Database Normalization;
我希望它看起来像这样:
I want it to look like this:
Credible Sources
Just in Time
Database Normalization
摆脱其中一个非常简单.
It's pretty simple to get rid of one or the other.
这个:
SELECT DISTINCT LEFT(OPTIONAL_FIELD_2, CHARINDEX(';', OPTIONAL_FIELD_2 + ';')-1) AS OPTIONAL_FIELD_2
FROM my_table
ORDER BY OPTIONAL_FIELD_2
给我这个:倡议:可靠来源倡议:及时倡议:数据库规范化
Gives me this: Initiative: Credible Sources Initiative: Just in Time Initiative: Database Normalization
还有这个:
SELECT DISTINCT RIGHT(OPTIONAL_FIELD_2, LEN(OPTIONAL_FIELD_2)-12) AS OPTIONAL_FIELD_2
FROM my_table
ORDER BY OPTIONAL_FIELD_2
给我这个:
Credible Sources;
Just in Time;
Database Normalization;
很难弄清楚如何将两者结合起来.
Having a hard time figuring out how to combine the two.
推荐答案
仅使用 substring()
怎么样?
select replace(substring(option_field_2, 13, 999), ';', '')
或者,如果您不知道前缀有多长:
Or, if you don't know how long the prefix is:
select replace(stuff(option_field_2, 1, charindex(':', option_field_2) + 1, ''), ';', '')
这里是db<>fiddle.
Here is a db<>fiddle.
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