Relational Databases Development Tutorials, Guides & Insights
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Tutorial
sql
Advanced SQL Queries: Subqueries, Unions, and Window Functions
Rank sales amounts for each employee:
SELECT sale_id, employee_id, amount,
RANK() OVER (PARTITION BY employee_id ORDER BY amount DESC) AS sales_rank
FROM sales;Aug 03, 2024
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sql
SQL Joins: A Comprehensive Guide to Combining Tables
employees
departments
Aug 03, 2024
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