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7 kyu
SQL: Concatenating Columns
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7 kyu
SQL Basics: Simple GROUP BY
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SQL Basics: Truncating
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6 kyu
SQL Basics: Simple EXISTS
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6 kyu
SQL Basics: Simple UNION ALL
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5 kyu
Factorial decomposition
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6 kyu
Count the smiley faces!
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6 kyu
Find the odd int
308,210rbuckley
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6 kyu
Duplicate Encoder
229,453obnounce
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6 kyu
Don't rely on luck.
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5 kyu
Not very secure
48,927mayrsascha
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6 kyu
Bit Counting
251,312xcthulhu
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6 kyu
Which are in?
81,859g964
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Find The Parity Outlier
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Create Phone Number
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