zhwiki recent empty categoty

SQL

CREATE FUNCTION `nsname`(`ns` INT) RETURNS VARCHAR(255)
BEGIN
  case
     when ns = 0 then RETURN ""
     when ns = 1 then RETURN "Talk:"
     when ns = 2 then RETURN "User:"
     when ns = 3 then RETURN "User talk:"
     when ns = 4 then RETURN "Wikpeida:"
     when ns = 5 then RETURN "Wikpeida talk:"
     when ns = 6 then RETURN "File:"
     when ns = 7 then RETURN "File talk:"
     when ns = 8 then RETURN "Mediawiki:"
     when ns = 9 then RETURN "Mediawiki talk:"
     when ns = 10 then RETURN "Template:"
     when ns = 11 then RETURN "Template talk:"
     when ns = 12 then RETURN "Help:"
     when ns = 13 then RETURN "Help talk:"
     when ns = 14 then RETURN "Category:"
     when ns = 15 then RETURN "Category talk:"
     when ns = 100 then RETURN "Portal:"
     when ns = 101 then RETURN "Portal talk:"
     when ns = 118 then RETURN "Draft:"
     when ns = 119 then RETURN "Draft talk:"
     when ns = 828 then RETURN "Module:"
     when ns = 829 then RETURN "Module talk:"
     end
END;
SELECT nsname(1);
SQL

Checking query status...
