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5 kyu
Counting overlapping events
1,118qgppl
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5 kyu
SQL Tuning: Function Calls
1,878danicat
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4 kyu
Challenge: Two actors who cast together the most
3,278pmatseykanets
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5 kyu
SQL Statistics: MIN, MEDIAN, MAX
5,824matt c
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5 kyu
Calculating Running Total
4,588pmatseykanets
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4 kyu
Dealing With Messy Data
1,240danicat
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6 kyu
Analyzing the sales by product and date
2,105FArekkusu
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5 kyu
Using Window Functions To Get Top N per Group
2,850pmatseykanets
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5 kyu
SQL Basics: Simple VIEW
3,979matt c
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6 kyu
SQL Basics: Simple IN
12,742matt c
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6 kyu
SQL Basics: Simple NULL handling
8,152matt c
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7 kyu
GROCERY STORE: Support Local Products
8,414baaart
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6 kyu
SQL Basics - Monsters using CASE
10,824PG1
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7 kyu
Simple Fun #74: Growing Plant
12,137myjinxin2015
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SQL Bug Fixing: Fix the QUERY - Totaling
8,792matt c
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