Automatic constraint enforcement is a useful and powerful feature, but sometimes there are reasons to defer enforcement, as examined in depth here.

Writing a proper SQL UPDATE query involving multiple tables in Postgres can be tricky and counterintuitive. Here’s a look at a particularly tricky example and the overall concepts.

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A survey of five sharding approaches and what factors could guide you to each approach.

A PG distribution integrated with lots of components and includes support for giving Postgres’s query planner ‘hints’ (or demands, really) of which indexes to use.

Which tables will be ‘vacuum’ed soon? Here’s a query that tries to figure it out.

It’s possible to keep an eye on what a lengthy ‘vacuum’ is doing using tools available on most Unix-like systems.

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