I am using REGEX pattern -\\s.+?_{1}
To match FY22_1-103_Evergreen - US Territories (US Virgin Islands)_ Quitters_Video Views_Twitter Feed_07.01.21-09.15.21
But the results are null in the table the regex function is returning to. I'm not sure if I just don't fully understand the limitations of re2, or if I am missing something else.
EDIT:
I ended up trying a raw string R"(-\s.+?_{1})"
which worked.
You can use a regex with a capturing group like
-\s+([^_]+)_
See the regex demo.
Details:
-
- a hyphen\s+
- one or more whitespaces([^_]+)
- Capturing group 1: one or more chars other than an underscore_
- an underscore.