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Popular pages
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Introduction | Understanding Postgres and Rails
WDI Materials for HK
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SQL | Understanding Postgres and Rails
SQL is really powerful: psql (9.3.5) Type "help" for help. fer=# \h Available help: ABORT CLUSTER DEALLOCATE END ALTER ...
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PSQL | Understanding Postgres and Rails
Iterm If you want to access your database quickly from your terminal, you can add this to your ~/.zshrc and zsh will create an alias for you to access PSQL If you install the Postgress.app: alias pg='...
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Active Record QueryMethods | Understanding Postgres and Rails
Specifies whether the records should be unique or not. For example: User.select(:name) # => Might return two records with the same name User.select(:name).distinct # => Returns 1 record per distinct ...
- Resources | Understanding Postgres and Rails
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Active Record | Understanding Postgres and Rails
This section uses count as an example method in this preamble, but the options described apply to all sub-sections. All calculation methods work directly on an active record model and they all generat...