SQL

The SQL spec is standardized by ISO/ANSI and must be purchased.
It's difficult to validate these notes without it.
This attempts to document the more general SQL-ish features available across SQL databases.

Documentation

SQL spec (unofficial)

https://jakewheat.github.io/sql-overview/

Challenges

https://quip.com/2gwZArKuWk7W

Notes

General

sql schemas

sql datatypes

sql optimization

Mutations

sql mutations

Queries

sql queries

sql joins

sql comparison operators

sql conditionals

sql functions

sql aggregate functions