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6 kyu
SQL Basics: Simple PIVOTING data WITHOUT CROSSTAB
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5 kyu
Using LATERAL JOIN To Get Top N per Group
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4 kyu
Challenge: Two actors who cast together the most
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5 kyu
Calculating Running Total
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5 kyu
Counting overlapping events
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Using Window Functions To Get Top N per Group
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6 kyu
Find the missing term in an Arithmetic Progression
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RGB To Hex Conversion
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Is a number prime?
112,390arithmetric
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7 kyu
Scoring Tests
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7 kyu
Find the next perfect square!
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7 kyu
Find the divisors!
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Retired
Vasya - Clerk
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6 kyu
Delete occurrences of an element if it occurs more than n times
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6 kyu
Which are in?
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