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Joins Development Tutorials, Guides & Insights

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How to Optimize MySQL Queries for Better Performance

Tutorial August 12, 2024
mysql

Efficient SELECT statements can greatly improve query performance.

Avoid using SELECT * as it retrieves all columns, consuming more resources than necessary. Specify only the columns you need.

SQL Joins: A Comprehensive Guide to Combining Tables

Tutorial August 03, 2024
sql

SELECT columns
FROM table1
LEFT JOIN table2
ON table1.common_column = table2.common_column;

Using the same tables, to fetch all employees and their department names (including those without a department):