Repository of SQL queries I have used to solve the challenges in SQL Zoo tutorials
Some advice:
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Try to solve the challenges on your own first.
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If you get stuck first look up SQL tutorials on https://www.w3schools.com/sql/ or similar SQL tutorial websites.
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If you are still stuck then check these solutions :)
Source for challenges:
NOTE: In order for keywords XOR and LENGTH to work, you have to make sure that MySQL is swiched on in the settings - you'll find the settings icon in the top right corner of the SQL Zoo webpage.