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5 kyu
Counting overlapping events
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SQL Tuning: Function Calls
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Challenge: Two actors who cast together the most
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SQL Statistics: MIN, MEDIAN, MAX
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Calculating Running Total
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Dealing With Messy Data
1,248danicat
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6 kyu
Analyzing the sales by product and date
2,116FArekkusu
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5 kyu
Using Window Functions To Get Top N per Group
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SQL Basics: Simple VIEW
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6 kyu
SQL Basics: Simple IN
12,861matt c
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6 kyu
SQL Basics: Simple NULL handling
8,239matt c
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7 kyu
GROCERY STORE: Support Local Products
8,480baaart
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6 kyu
SQL Basics - Monsters using CASE
10,931PG1
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Simple Fun #74: Growing Plant
12,246myjinxin2015
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SQL Bug Fixing: Fix the QUERY - Totaling
8,885matt c
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