Databases are commonly used as dumb storage bins for CRUD application data. However, this doesn’t do them justice: database systems such as PostgreSQL are much more capable and versatile than that, supporting a wide range of operations across many different data types.

The standard way of interfacing with Postgres is SQL – you know, that thing you may have briefly learned in webdev class where you SELECT stuff FROM a set of tables WHERE some condition is met. But that’s a far cry from what you can achieve when taking advantage of the full feature set of this declarative and – surprise! – Turing complete programming language.

This series of posts is loosely based on what I learned in the Advanced SQL lecture held by Torsten Grust in the summer of 2017 at the University of Tübingen. Take a look at the lecture slides for in-depth explanations and a wide array of examples.

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