SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function mapExtractKeyLike (children 1)
     ExpressionList (children 2)
      Function map (children 1)
       ExpressionList (children 4)
        Literal \'aa\'
        Literal NULL
        Literal \'bb\'
        Literal NULL
      Literal \'q%\'