Kata Library

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37 Kata Found

5 kyu

Data Structures

7 kyu

SQL Basics: Simple JOIN with COUNT

14,986matt c

4 kyu

Sum over a database

5 kyu

Vector addition

7 kyu

Countries Capitals for Trivia Night (SQL for Beginners #6)

7,871MaikelNabil2 Issues Reported

7 kyu

SQL with LOTR: Elven Wildcards

7,253sHale

7 kyu

SQL with Street Fighter: Total Wins

6,756sHale1 Issue Reported

7 kyu

SQL with Harry Potter: Sorting Hat Comparators

6,903sHale

7 kyu

SQL with Pokemon: Damage Multipliers

5,625sHale1 Issue Reported

7 kyu

SQL with Sailor Moon: Thinking about JOINs...

6,151sHale1 Issue Reported

2 kyu

Simple SQL Engine

413SteveRuble2 Issues Reported

7 kyu

GROCERY STORE: Real Price!

3,068baaart2 Issues Reported

7 kyu

GROCERY STORE: Support Local Products

7 kyu

GROCERY STORE: Logistic Optimisation

4,821baaart2 Issues Reported

7 kyu

GROCERY STORE: Inventory

7 kyu

BASICS: Length based SELECT with LIKE

6 kyu

SELECT prime numbers

6 kyu

SQL Basics: Simple PIVOTING data WITHOUT CROSSTAB

2,605marko-bekhta

3 kyu

Challenge: Transpose two-dimensional arrays

734pmatseykanets1 Issue Reported

7 kyu

Best-Selling Books (SQL for Beginners #5)

17,392MaikelNabil

8 kyu

Collect Tuition (SQL for Beginners #4)

16,320MaikelNabil1 Issue Reported

8 kyu

Register for the Party (SQL for Beginners #3)

14,823MaikelNabil

8 kyu

On the Canadian Border (SQL for Beginners #2)

18,172MaikelNabil

8 kyu

Adults only (SQL for Beginners #1)

22,561MaikelNabil

4 kyu

Calculating Month-Over-Month Percentage Growth Rate

1,839pmatseykanets1 Issue Reported

5 kyu

Calculating Running Total

3,553pmatseykanets1 Issue Reported

5 kyu

1,125pmatseykanets2 Issues Reported

4 kyu

Dealing With Messy Data

5 kyu

Using LATERAL JOIN To Get Top N per Group

1,505pmatseykanets

5 kyu

Using Window Functions To Get Top N per Group

2,156pmatseykanets1 Issue Reported

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