Join tables on nearest date in the past, in MySQL

Question

I have a sqlite query that I\'m trying to write. I have two tables:

TableA (sales): id sales date

TableB (goals): id goal date

I\'m selecting from Ta

Answer 1

SELECT a.id, a.sales, a.date, (SELECT TOP 1 Goal 
                               FROM TableB b WHERE b.date < a.date
                               ORDER BY b.date DESC) As Goal
FROM TableA a

Going off the nearest date in the past.