SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function space (children 1)
     ExpressionList (children 1)
      Identifier u16
    Function length (children 1)
     ExpressionList (children 1)
      Function space (children 1)
       ExpressionList (children 1)
        Identifier u16
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier defaults
