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Start training on this collection. Each time you skip or complete a kata you will be taken to the next kata in the series. Once you cycle through the items in the collection you will revert back to your normal training routine.

Description

Somewhat tricky SQL kata

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Puzzles
SQL
Databases
Metaprogramming
Puzzles
SQL
Puzzles
SQL
Databases
Security
SQL
Restricted
Databases
Puzzles