I'm having a bit of trouble with the syntax and the documentation only confuses me more.
I'm trying regexp_extract_all(group_concat(score),'A-Z','')
, but getting this error:
ERROR [42S02] ERROR: Function 'regexp_extract_all(varchar, unknown, unknown)' does not exist
Unable to identify a function that satisfies the given argument types
You may need to add explicit typecasts
I'm using a box that has the regexp functions installed.