SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function s3 (children 1)
       ExpressionList (children 1)
        Function headers (children 1)
         ExpressionList (children 1)
          Function equals (children 1)
           ExpressionList (children 2)
            Literal \'random_header\'
            Literal \'value\'