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7 kyu
SQL: Regex Replace
5,533PG1
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7 kyu
SQL Basics: Simple GROUP BY
22,146matt c
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Count Weekdays
1,454pmatseykanets
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4 kyu
Dealing With Messy Data
1,236danicat
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4 kyu
Calculating Month-Over-Month Percentage Growth Rate
2,327pmatseykanets
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5 kyu
SQL Basics: Simple VIEW
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5 kyu
SQL Tuning: Function Calls
1,872danicat
Completed Languages:
5 kyu
Using Window Functions To Get Top N per Group
2,842pmatseykanets
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5 kyu
SQL Basics: Simple Hierarchical structure
2,808matt c
Completed Languages:
5 kyu
Relational division: Find all movies two actors cast in together
7,470pmatseykanets
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6 kyu
SQL Basics: Simple PIVOTING data WITHOUT CROSSTAB
3,331marko-bekhta
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5 kyu
SQL Basics: Simple PIVOTING data
2,775matt c
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Using LATERAL JOIN To Get Top N per Group
1,982pmatseykanets
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GROCERY STORE: Inventory
10,453baaart
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8 kyu
SQL Basics: Mod
16,128PG1
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