On Wed, 2005-10-05 at 14:21 +0200, Frank van Vugt wrote: > Hi Joost, > > Try joining and comparing the order table with/to an aggregated orderline > table, something like this: > > select order_id, order_price, sum_price, order_price - sum_price as diff > from order, (select parent_order_id, sum(orderline_price) as sum_price > from orderline group by parent_order_id) as foo > where order_id = parent_order_id > and order_price != sum_price > > > This should prove to be as efficient as it gets ;) How nice. An answer between the questions. And a working anser!. Which manual did I miss ;-)
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