Boot.dev Learn SQL

 What can I say, but how awesome Boot.dev is!!!  I just finished their Learn SQL course and although I have been working with databases for 25 years Boots just help solidified my skills and polished them.  I wish I would have took the course one day earlier because one of my recent interview questions was:

How to you limit the results from a read query.   Answer:  limit <integer> at the end of the query.

Example:

SELECT * FROM USERS limit 50;  -- MySQL, PostgreSQL, SQLite

SELECT TOP(50) * FROM USERS;  -- MSSQL

SELECT * FROM USERS FETCH FIRST 50 ROWS ONLY; -- ORACLE

Very good theory training on increasing database speed by way of normalization and indexes.