Template:Pagename to query

The following documentation is transcluded from Template:Pagename to query/doc (edit):

This template is used to play around with nasty " character in the page name, if it's used in a query. For example, |where=_pageName="{{FULLPAGENAME}}" may cause error or even crash if the page name is "Relicologist", because it has ", and " is also used in the query to close a string value.