Magic words:
psql -U postgres
Some interesting flags (to see all, use -h
or --help
depending on your psql version):
-E
: will describe the underlaying queries of the\
commands (cool for learning!)-l
: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)
I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!
\
Command Line
pry -r ./config/app_init_file.rb
- load your app into a pry session (look at the file loaded by config.ru)pry -r ./config/environment.rb
- load your rails into a pry session
Debugger
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# Call scopes directly from your URL params: | |
# | |
# @products = Product.filter(params.slice(:status, :location, :starts_with)) | |
module Filterable | |
extend ActiveSupport::Concern | |
module ClassMethods | |
# Call the class methods with names based on the keys in <tt>filtering_params</tt> | |
# with their associated values. For example, "{ status: 'delayed' }" would call |
People
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๐ :stuck_out_tongue: |