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6 kyu
SQL Basics: Simple table totaling.
10,104matt c
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SQL Bug Fixing: Fix the QUERY - Totaling
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5 kyu
Users' pets and JSON data: Part 3
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7 kyu
SQL Basics: Create a FUNCTION
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SQL Basics: Simple IN
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SQL Basics: Simple UNION ALL
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8 kyu
SQL Basics: Simple MIN / MAX
20,848matt c
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4 kyu
Total items belonging to the categories on all tree levels
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5 kyu
Calculating Running Total
4,588pmatseykanets
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SQL Basics: Simple VIEW
3,982matt c
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5 kyu
SQL Statistics: MIN, MEDIAN, MAX
5,825matt c
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Count IP Addresses
28,485xDranik
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SQL Basics: Simple HAVING
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Challenge: Two actors who cast together the most
3,280pmatseykanets
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N-th Fibonacci
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