SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function space (children 1)
     ExpressionList (children 1)
      Identifier i8
    Function length (children 1)
     ExpressionList (children 1)
      Function space (children 1)
       ExpressionList (children 1)
        Identifier i8
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier defaults
