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Optimizing SQL Queries: Indexing and Query Optimization Techniques

Tutorial August 03, 2024
sql

SELECT e.name, d.department_name
FROM employees e
INNER JOIN departments d ON e.department_id = d.department_id;
-- Avoid
SELECT * FROM employees WHERE UPPER(name) = 'ALICE';
-- Prefer
SELECT * FROM employees WHERE name = 'Alice';