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PostgreSQL character types performance test

It's a small Ruby application that tests PostgreSQL character types performance. Tested types:

  • char(n)
  • varchar(n)
  • varchar
  • text

Usage:

ruby bin/postgresql_character_types.rb <POSTGRES_USER>

More information about this application can be found here (in Polish): http://mieczyk.vilya.pl/2016/08/15/postgresql-znakowe-typy-danych/