Re: Aggregation on expressions

I'd be glad to contribute to this, but I've a self-imposed deadline to respect for the project I'm on and I can't spend time now to dig into Django internals, but I stick to use existing functionality. I'm asking a lot of questions on this group and I'm really deeply impressed by the kindliness

Re: Aggregation on expressions

On Tue, Aug 18, 2009 at 10:48 PM, mettwoch wrote: > > The whole thing behind that it is: I'm developing an invoicing/ > inventory application and I run into performance problems that might > require using raw SQL and admittedly I'm not an SQL expert and I > dislike the idea of

Re: Aggregation on expressions

processing time by > > a factor of 20 in critical areas of my application. While doing so, I > > felt that some kind of a new field-type could be useful and perhaps > > lead to make aggregation on expressions possible. Something like an > > ExpressionField (or SQLFi

Re: Aggregation on expressions

o reduce processing time by > a factor of 20 in critical areas of my application. While doing so, I > felt that some kind of a new field-type could be useful and perhaps > lead to make aggregation on expressions possible. Something like an > ExpressionField (or SQLField or whatever ...) that

Aggregation on expressions

that some kind of a new field-type could be useful and perhaps lead to make aggregation on expressions possible. Something like an ExpressionField (or SQLField or whatever ...) that does some SQL processing directly on the database and that could be used like this: class InvoiceLine(): price