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SQL Fundamentals

Learn SQL from scratch: queries, aggregates, joins and safe data changes

0 of 4 lessons passed0%

0 / 12 stars

0 / 20 tricks - Trick Book
  1. 1

    SQL SELECT, WHERE, ORDER BY and LIMIT: Querying Your First Table

    5-stop ride6 min read

  2. 2

    SQL GROUP BY, HAVING and Aggregate Functions Explained with Examples

    5-stop ride5 min read

  3. 3

    SQL JOINs Explained: INNER vs LEFT JOIN and the Row Multiplication Trap

    5-stop ride6 min read

  4. 4

    SQL INSERT, UPDATE, DELETE, Constraints and Primary and Foreign Keys

    5-stop ride6 min read

Each ride has 5 stops: read the trick, answer the question, ride on. Pass with 3 of 5 correct (1 star), 4 for 2 stars, all 5 for 3 stars. Progress is saved in this browser. Prefer to read first? Open the reading version of SQL Fundamentals.