learn postgresql quickly through a practical postgresql tutorial designed for database administrators and application developers.

the official site for postgresql, the world's most advanced open source database

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a blog by jeff atwood on programming and human factors

popsql is a unified sql collaboration workspace that connects everyone in the data analysis process so you can obtain better insights by asking the right questions, together.

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stack overflow is the largest, most trusted online community for developers to learn, share​ ​their programming ​knowledge, and build their careers.

github is where over 100 million developers shape the future of software, together. contribute to the open source community, manage your git repositories, review code like a pro, track bugs and features, power your ci/cd and devops workflows, and secure code before you commit it.