Joins & Subqueries
Pulling data from several tables at once, and the difference between the four join types in practice.
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Choosing between INNER and LEFT
Foundation
- Not triedChoosing between INNER and LEFTFoundation
- Not triedWhat a join is actually doingFoundation
- Not triedWhat is a join for?Foundation
- Not triedA hundred and one queries for one pageCore
- Not triedThe LEFT JOIN that became an INNER JOINChallenge
- Not triedThe LEFT JOIN that became an INNER JOINChallenge
- Not triedThe NOT IN that returns nothingChallenge
- Not triedThe total that doubled after adding a joinChallenge