Question

I have a string that comes in this format

Transaction 'pqr_111_xyz_222(Aaaa Bbbb Cccc - 3333)' failed due to connection error

I need to extract the text between ‘ and (.

pqr_111_xyz_222 in this example.

The following query returns ‘pqr_111_xyz_222(

select regexp_substr('Transaction ''pqr_111_xyz_222(Aaaa Bbbb Cccc - 3333)'' failed due to connection error', '''.+\(') from dual;

How do I modify the regex (or use any other technique that can included within this single query) so that the markers ‘ and ( are excluded and I get just pqr_111_xyz_222 ?

Answer 1

You could use REGEXP_REPLACE instead:

regexp_replace('Transaction ''pqr_111_xyz_222(Aaaa Bbbb Cccc - 3333)'' failed due to connection error', '.*''(.+)\(.*', '\1')