How to Apply MariaDB Best Practices in PostgreSQL

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What are the most important MariaDB best practices?

A practical checklist for designing, querying, and maintaining fast, reliable MariaDB databases.

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Description

Example H2

Example H3

What are essential MariaDB configuration best practices?

Enable the InnoDB engine by default, set innodb_file_per_table=ON for easier disk management, and size innodb_buffer_pool_size to about 70-80% of available RAM on dedicated servers.

How to structure tables for performance?

Normalize until it hurts, then denormalize when reads dominate writes. Use appropriate data types and keep rows narrow to reduce I/O.

Why should every table have a PRIMARY KEY?

Primary keys enforce uniqueness, speed joins, and allow clustered storage.Always choose an immutable, short column or synthetic ID.

How to write efficient SELECT statements?

Select only needed columns, avoid SELECT *, filter early with indexed predicates, and limit result sets with LIMIT.

How to protect data integrity with transactions?

Wrap multi-step operations in START TRANSACTION/COMMIT. Always handle errors with ROLLBACK to avoid partial writes.

How to use indexes wisely?

Create composite indexes that match your most common WHERE + ORDER BY patterns.Drop unused indexes to save write overhead.

What maintenance tasks should run regularly?

Schedule ANALYZE TABLE, monitor slow query logs, rotate binary logs, and test backups with full restores monthly.

Why How to Apply MariaDB Best Practices in PostgreSQL is important

How to Apply MariaDB Best Practices in PostgreSQL Example Usage


-- Efficiently fetch a customer’s last 5 orders with totals
SELECT o.id, o.order_date, o.total_amount
FROM Orders AS o
JOIN Customers AS c ON c.id = o.customer_id
WHERE c.email = 'jane@example.com'
ORDER BY o.order_date DESC
LIMIT 5;

How to Apply MariaDB Best Practices in PostgreSQL Syntax


-- Create well-typed tables
CREATE TABLE Customers (
  id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  name VARCHAR(100) NOT NULL,
  email VARCHAR(255) UNIQUE NOT NULL,
  created_at DATETIME DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB;

-- Add covering index for frequent lookup
CREATE INDEX idx_orders_customer_date
ON Orders (customer_id, order_date);

-- Transaction example
START TRANSACTION;
  INSERT INTO Orders (customer_id, order_date, total_amount)
  VALUES (12, NOW(), 149.99);
  INSERT INTO OrderItems (order_id, product_id, quantity)
  VALUES (LAST_INSERT_ID(), 5, 2);
COMMIT;

Common Mistakes

Using SELECT * in production queries. It retrieves unnecessary columns, increases network traffic, and disables covering indexes. Fix by listing only required columns.
Creating too many indexes. Every extra index slows INSERT/UPDATE operations and consumes disk. Audit index usage and drop those with zero reads.