SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function arrayJoin (alias s) (children 1)
     ExpressionList (children 1)
      Literal Array_[\'Hello\', \'test\', \'World\', \'world\', \'abc\', \'xyz\']
   Function in (children 1)
    ExpressionList (children 2)
     Identifier s
     Identifier set2