PostgreSQL JOINs

Table of contents

1. 1. Recap of SQL JOIN types

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   Review the most common types of JOINs. Practice JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN and others.

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   1. Simple JOINs recap
      1. Introduction
      2. Get to know the author table
      3. Get to know the book table
      4. Get to know the adaptation table
      5. JOINs – recap
      6. JOIN and filtering
      7. JOINS – ambiguous columns
   2. Various kinds of JOINs
      1. INNER JOIN
      2. LEFT JOIN
      3. RIGHT JOIN
      4. FULL JOIN
      5. CROSS JOIN
   3. Filtering with LEFT JOIN and RIGHT JOIN
      1. Filtering with JOINs
      2. Filtering with JOINS – continued
      3. ON and WHERE conditions
   4. Summary
      1. Summary
      2. Get ready
      3. Exercise 1
      4. Exercise 2
      5. Exercise 3
      6. Congratulations

2. 2. Multiple JOINs

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   Refine your joining skills. Exercise joining more than two tables in one SQL query.

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   1. Healthy Shop database
      1. Introduction
      2. Get to know the department table
      3. Get to know the product table
      4. Get to know the nutrition_data table
   2. MULTIPLE JOINs – Exercises
      1. Exercise 1
      2. Exercise 2
      3. Exercise 3 – Get to know the producer table
      4. Exercise 4
      5. Exercise 5 – Get to know the sales_history table
      6. Exercise 6
      7. Exercise 7
      8. Exercise 8
      9. Congratulations

3. 3. Joining a table with itself

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   Learn how to join SQL table with itself.

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   1. Introduction
      1. Introduction
      2. Get to know the workshop_workers table
      3. Filtering self joined tables
      4. Filtering – exercise
   2. Dictionary database
      1. Get to know the dictionary table
      2. Dictionary table – exercise 1
      3. Dictionary table – exercise 2
      4. Dictionary table – exercise 3
   3. Summary
      1. Summary
      2. Person table – exercise 1
      3. Person table – exercise 2
      4. Congratulations

4. 4. Non-equi JOINs

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   Practice joins with less common conditions: non-equi JOINs and joins between non-key columns.

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   1. Medical Center database
      1. Introduction
      2. Get to know the physician table
      3. Get to know the therapy table
      4. Get to know the treatment table
   2. Non primary-foreign key JOINs
      1. Non primary-foreign key JOINs
      2. Exercise 1
      3. Exercise 2
      4. Joining more tables
      5. Filtering results – exercise
   3. Non-equi JOINs
      1. Non-equi JOINs
      2. Get to know the item table
      3. Get to know the buyer table
      4. Items within price range
      5. Filtering non-equi-JOINs
      6. Get to know the apartments table
      7. Get to know the couples table
      8. Get apartments in price range
      9. Preferred affordable apartments
   4. Non-equi self JOINs
      1. NON-EQUI self JOINs
      2. Employee ages
      3. Get to know the product_price table
      4. Get to know the orders table
      5. Exercise 1
      6. Exercise 2
   5. Summary
      1. Summary
      2. Exercise 1
      3. Exercise 2
      4. Exercise 3
      5. Congratulations

5. 5. Challenge

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   Check your knowledge in the challenge.

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   1. Challenge time
      1. Get to know the lecturer table
      2. Get to know the student_group table
      3. Get to know the tuition table
      4. Get to know the timetable table
      5. Exercise 1
      6. Exercise 2
      7. Exercise 3
      8. Exercise 4
      9. Exercise 5
      10. Get to know the car table
      11. Get to know the charity_auction table
      12. Get to know the buyer table
      13. Exercise 6
      14. Exercise 7
      15. Exercise 8
      16. Exercise 9
      17. Exercise 10
      18. Congratulations!

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