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8 kyu
easiest
7 kyu
6 kyu
5 kyu
4 kyu
3 kyu
2 kyu
1 kyu
hardest
Algorithms
3
Cryptography
1
Data Science
8
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1
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226
Date Time
5
Filtering
1
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40
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1
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1
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3
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4
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10
SQL
223
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1
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1
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1
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1
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
226 Kata Found
6 kyu
Conditional Count
7,633
pmatseykanets
2 Issues Reported
SQL
Fundamentals
Databases
5 kyu
Relational division: Find all movies two actors cast in together
7,826
pmatseykanets
1 Issue Reported
Fundamentals
Databases
SQL
7 kyu
SQL: Party Votes in N-Prefixed States
113
x4g4p3x
SQL
Databases
Strings
6 kyu
Youngest Team Members
725
bornForThis
SQL
Databases
Restricted
6 kyu
The Great Data Entry Blame Game
191
bornForThis
SQL
Databases
7 kyu
SQL with Pokemon: Damage Multipliers
8,079
sHale
1 Issue Reported
Fundamentals
SQL
Databases
Data Science
6 kyu
Find Inventory Changes Between Two Dates
104
bornForThis
1 Issue Reported
SQL
Databases
5 kyu
Simple data migration: assortment statuses
53
Twilight_Sun
SQL
Databases
6 kyu
Tracking Active Bookings Over Time
107
bornForThis
SQL
Databases
6 kyu
Building a User Leaderboard with Engagement Metrics
116
bornForThis
SQL
Databases
7 kyu
Identifying Mutual Likes in a Dating App
249
bornForThis
SQL
Databases
6 kyu
Finding Products Matching All Selected Tags: Parameterized Version
65
bornForThis
SQL
Databases
7 kyu
Finding Products Matching All Selected Tags
309
bornForThis
SQL
Databases
5 kyu
URL shortener
869
zLuki
Databases
Algorithms
Data Structures
6 kyu
Runner Results with Position-Based Competitor Info
197
bornForThis
SQL
Databases
6 kyu
Daily Hospital Admissions and Discharges Report
292
bornForThis
SQL
Databases
7 kyu
Categorize and Count Job Applications Based on Status
396
bornForThis
SQL
Databases
5 kyu
Analysis of Consecutive Stock Price Increases
85
bornForThis
SQL
Databases
6 kyu
Examining Traffic Data to Track Criminal Conduits
112
bornForThis
SQL
Databases
Date Time
7 kyu
Counting Interview Failures Without Using COUNT()
332
bornForThis
SQL
Databases
Restricted
6 kyu
Identifying Peak Hours for Angry Customer Calls
157
bornForThis
1 Issue Reported
SQL
Databases
6 kyu
Employee Weekend Work: Counting Unique Weekends and Total Days Worked
185
bornForThis
SQL
Databases
Date Time
6 kyu
Refactoring SQL Queries: part 2 (Pagination Disaster)
131
bornForThis
SQL
Databases
Refactoring
7 kyu
Uncover the Code: ABC Kata Solutions' Longest-Tenured Employees
379
bornForThis
SQL
Databases
7 kyu
Ten Years of Talent: Analyzing Employee Flux at ABC Kata Solutions
246
bornForThis
SQL
Databases
7 kyu
ABC Kata Solutions' Failures That Paved the Road to Success
227
bornForThis
SQL
Databases
8 kyu
SQL Basics: Simple WHERE and ORDER BY
27,244
matt c
1 Issue Reported
SQL
Filtering
Databases
Fundamentals
7 kyu
Uncovering ABC Kata Solutions' Most Extravagant Departmental Expenses
190
bornForThis
SQL
Databases
6 kyu
Monthly Landlord Revenue Report Generation
213
bornForThis
SQL
Databases
5 kyu
Check passwords by hashes
35
Twilight_Sun
SQL
Databases
Performance
Cryptography
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