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egrueter-dev/n_plus_one.rb

Created April 22, 2015 22:14
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Eliminating N+1 Queries
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n_plus_one.rb
@purchases = current_user.purchases.includes(:charges)
#loads the charges for a particular user's purchases into memory, when you
#call the below code, the application does not need to go back to memory...
current_user.purchases.charges
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