I Have a CSV table where one of the columns has names of the post offices with the type given in brackets like this:
Sri venkateswara puram (Sub Office)
I want to extract the post office type, by using regular expressions, and I can use
(?<=\().+?(?=\)) as the regular expression, but I can't figure out how I can copy the matching string to another column in Qgis's Field Calculator.
How do I extract the match of a Regular Expression in Qgis's Field Calculator, either using the inbuilt functions or custom functions?