MySQL - Join 2 tables

Question

I have 2 tables: users & balance.

I want to join the tables with all of the details from the user table (all fields of all tuples) with the most recent entry from

Answer 1

You can use the first SQL you wrote but for all users:

SELECT u.*, b.balance, b.date
FROM users u JOIN balance b ON u.id = b.userId
WHERE b.date = (SELECT MAX(date) FROM balance WHERE userId = u.id);

This may not be the fastest way to get the result, but it'll give you what you need. I use similar queries in quite a few places in my app.