DatabasePlanet PostgreSQL
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PostgreSQL validates function bodies at creation time by default, catching syntax errors early.
After helping out a buddy with the job title of Data Analyst, who experienced some light Postgres “bucketing” woes - and given the fact that this was not the first such occasion in that area over the years, though I’d help future googlers…

TL;DR: A bug in MongoDB’s time-series collection code allows a user with the standard readWrite role to corrupt memory within the mongod process. Best case: your database crashes, and you spend the night writing a postmortem. Worst case:…
PostgreSQL's Table Access Method API is finally seeing real action.