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SQL Basics: Simple Hierarchical structure
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SQL Basics: Simple GROUP BY
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SQL Basics: Simple JOIN with COUNT
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GROCERY STORE: Inventory
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SQL: Concatenating Columns
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SQL Basics: Simple UNION ALL
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SQL Bug Fixing: Fix the JOIN
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SQL with LOTR: Elven Wildcards
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SQL Basics: Simple JOIN
21,772jhoffner
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7 kyu
Sum of odd numbers
164,819hhelwich
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SQL with Street Fighter: Total Wins
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SQL with Sailor Moon: Thinking about JOINs...
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GROCERY STORE: Support Local Products
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SQL Basics: Truncating
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