I find very handy the Postgres aggregate and stats functions: https://www.postgresql.org/docs/current/static/functions-aggregate.html https://www.postgresql.org

I find very handy the Postgres aggregate and stats functions: https://www.postgresql.org/docs/current/static/functions-aggregate.html https://www.postgresql.org/docs/current/static/functions-agg.... I have also used Sparklines in Python for quick and dirty trends