InsertQuery   (children 2)
 Identifier b_orders
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 2)
     Identifier first_order_id
     Literal \'fake\'
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier b_customers
    ExpressionList (children 1)
     Identifier first_order_id
