[abryzak]

I sometimes find myself going to Google for some complex queries or obscure error messages as well, but I'll usually try an alternative query first.

In this case, DDG happens to have a bang shortcut for postgres which takes you directly to the search results on the PostgreSQL site if you query !postgres array_agg.

There's a surprisingly large number of these which end up making it more useful than the generic web search results page overall.