Kata Library: SQL Practice

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196 Kata Found

Beta

Commercial Stock Management

Status:Testing & feedback needed

Estimated Rank:
2 kyu

6 kyu

Surviving the Bloody Enterprise: A Time-Travel Adventure with Running Totals

6 kyu

Reporting on House Maintenance Tasks Completion

5 kyu

Calculate Available Time (overlaps are possible)

Beta

Backtracking Contributions: Unveiling the Penultimate Team Member in Project Task Management

Status:Ranking feedback needed

Estimated Rank:
6 kyu

5 kyu

Deduplicated Aggregation of Data from Multiple Tables in Banking Operations

Beta

E-commerce: Categories with Decreased Product Stock

Status:Ranking feedback needed

Estimated Rank:
6 kyu

6 kyu

Customers with Urgently Expiring Certificates

7 kyu

Extract Direct Subdirectories

5 kyu

Market Insight: Latest Periods of Stable Prices

5 kyu

Weekly Ticket Status Analysis: Tracking Open, Closed, and Active Tickets

5 kyu

Aggregation of Freelance Developer Activity Records into Time Intervals

7 kyu

Opinions Galore: SQL's Take on Who Thinks What

6 kyu

Extract Direct Subdirectories - parameterized version

6 kyu

Finding Batch Temperature Fluctuations in Manufacturing Processes

7 kyu

Public Domain Popularity: Analyzing User Email Trends with SQL

6 kyu

SQL Sleuths: Exposing the Developer's Attributes

7 kyu

Splitting and Listing Unique Characters from a String Column

6 kyu

Matching Orders with Dynamic Pricing

6 kyu

Creating a Simple Contingency Table in SQL

4 kyu

SQL Bad Data needs to be reported!

6 kyu

Insights for Online Store Product Variants

6 kyu

Time Trek: Navigating the Chronology of Employee Tenures

7 kyu

Extracting the Last Element from Concatenated Strings

5 kyu

Histogram Creation with Ceiling Rounding in PostgreSQL

7 kyu

Calculating Next Fiscal Year-End Dates for UK Companies

4 kyu

Call Center Traffic: Identifying Peak Hours and User Workload

6 kyu

Unmasking the Narcissists of Codewars

Beta

Finding people with a speeding record

18Crafto Hohenvels

Status:Testing & feedback needed

Estimated Rank:
7 kyu

6 kyu

Bakery Delight: Querying Custom Cakes with Perfect Decorations

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