I\'m thinking a bit about the concept of Django aggregates. I don\'t quite \"get\" how they can be used in my case. Basically i have a three-tier hierarchy of objects in my model, and the lowest objec
I\'m having trouble doing an aggregation query on a many-to-many related field. Here are my models: class SortedTagManager(models.Manager):
I\'m trying to construct a query to get the \"average, maximum and minimum number of items purchased per user\".
开发者_JAVA技巧I need to get aggregated value of two columns. So first multiple them together and then get theirs sum(). Code below naturally does not work, it is just for clarification.
I have a Project model similar to: class Project(models.Model): ... lead_analyst=models.ForeignKey(User, related_name=\'lead_analyst\')
I have the following models: class ApiUser(models.Model): apikey = models.CharField(max_length=32, unique=True)
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