Hive regexp_extract data

Question

I\'m trying to use regexp_extract on hive.

I have data which is varying in nature, such as:

a2=new something a1=asdasdsad;a2=old something;a3=asadasdsadsa

Answer 1

(?<=a2=)[^;]*(?:;|$)

Try this.See demo.

https://www.regex101.com/r/rC2mH4/7