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Download user manual - Instant Developer Documentation
Transcript
Andrea Maioli – Instant Developer: User's Guide In its default form, the document's master query is equal to the query that the framework would have run automatically. Each column of the query is related to a public property of the document. We can now see how to use the master query to avoid calculation of the order total with a separate query in the AfterLoad event. You can simply add a new column to the query, assign it to the OrderTotal property and use as an expression a subquery capable of calculating the total. The advantage of this solution is that everything is resolved with a single query instead of two, which helps optimize execution by the database server. 188
