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7 kyu
SQL with Street Fighter: Total Wins
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SQL Basics: Simple JOIN with COUNT
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SQL with Sailor Moon: Thinking about JOINs...
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SQL Basics: Group By Day
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SQL Basics: Biggest in Each Column
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SQL Basics: Simple EXISTS
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SQL Basics: Simple HAVING
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SQL Basics: Simple UNION ALL
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SQL Basics: Simple IN
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GROCERY STORE: Logistic Optimisation
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GROCERY STORE: Support Local Products
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GROCERY STORE: Inventory
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BASICS: Length based SELECT with LIKE
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Easy SQL: Absolute Value and Log to Base
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SQL Basics: Simple JOIN
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