Where is the best place for a complete beginner to learn SQL?

>>60972846
school

>>60972859
nice meme

>>60972846
practice, just design a simple polling app, and you will discover all about sql on your own after fucking up things

>>60972846
Definitely not 4Chan. Get out of here

SQLite

>>60972942
you wont learn shit about concurrency

w3schools, pretty much where I learned all my webdev shit for college

>>60972846
from working

>>60972846

who the fuck still uses sql

>not using an orm
>using a relational database
>not using nosql

you're like 5 levels below the current up to date tech

I have a slightly different question... if I know all the basics (can write queries including plenty of joins etc, use transactions, defined indices), how can I step that up?

I want to us aggregate functions/GROUP BY properly, learn proper concurrency patterns as >>60972981 says (i.e. temp locking to avoid double booking), query optimisation, what the fuck a window function is, etc.

>>60973293

this, current tech market is moving away from relational db