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hey everyone its Anthony from pretty printed here and todays video I want to talk a little bit about how to use annotate in Jango so a couple videos ago I talked about how to use aggregate and annotate is somewhat similar youre going to use a lot of the same functions for both but they have different purposes so for aggregate what happens is you kind of condense all the data in a particular table or multiple tables down to a single value so for example you can count all the rows in the table you can get the average value of some column in the table and it returns one value well with annotate you dont reduce everything to one value in fact you get pretty much the same results that you would without the annotate but what annotate does is it kind of aggregates across different rows and the pins that result to the individual rows that you get in return so I think its a little difficult to explain so Ill show you in this video and Ill show you the raw queries that are being generated