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avoid N+1 queries by using includes 
#wip
improve progressions data model 
#fitloop
parametrized the hard-coded queries
add more properties 
#homestra
scope all db queries 
#chamados
review all classes and predicates in normalization ont
optimize project queries on single project page 
#octotrack
optimize db queries
process queries 2.5x more faster 
#nanobrain
move more loops to single sql queries 
#ctr
refactor customer pass validity method to rely on sql instead of ruby object checks 
#gtspunchpass
solved the SQL query for sorting by scores 2 associations away (too much ORM heaven made me forget how to do joins, aggregations, subqueries) #smumods