Relational Databases Development Tutorials, Guides & Insights
Unlock 2+ expert-curated relational databases tutorials, real-world code snippets, and modern dev strategies. From fundamentals to advanced topics, boost your relational databases skills on DeveloperBreeze.
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Tutorial
sql
Advanced SQL Queries: Subqueries, Unions, and Window Functions
Result: John, Mary, Steve
The UNION operator combines results from two or more SELECT statements, removing duplicates. Use UNION ALL to include duplicates.
Aug 03, 2024
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sql
SQL Joins: A Comprehensive Guide to Combining Tables
Using the same tables, to generate a combination of all employees and all departments:
SELECT employees.name, departments.department_name
FROM employees
CROSS JOIN departments;Aug 03, 2024
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