Super Simple, Persistent, Dynamically Generated Django Avatars
Posted by julian.a on Jan. 27, 2017, 8:40 a.m.
Implementing persistent dynamically generated avatars in Django is super simple!
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Graph Algorithms in a Database: Recursive CTEs and Topological Sort with Postgres
Posted by Iain on Jan. 26, 2017, 3:09 p.m.
Surprisingly, databases can be used to do graph algorithms. Using Postgres, this post pushes SQL to its Turing Complete limits by using a powerful device called a Recursive CTE to traverse complicated foreign key relationships as if they were directed graphs. It starts out simple and builds up to a query that will topologically sort any acyclic graph.