Plus their documentation is top notch. After using Oracle for 15 years, I nearly cried when I moved to Postgres recently and saw how wonderful their documentation is.
I've often said that I didn't learn English grammar until I studied German, I didn't understand Linux until I read the Arch documentation, and I didn't comprehend relational data until I read the Postgres documentation.
I've often said that I didn't learn English grammar until I studied German, I didn't understand Linux until I read the Arch documentation, and I didn't comprehend relational data until I read the Postgres documentation.