MySQL Tutorial - MySQL Best Practices
✅ Best Practices
Golden Rules:
Do's ✅
- Always use WHERE with UPDATE/DELETE
- Use PRIMARY KEY
- INDEX important columns
- Regular backups
- Use prepared statements (SQL injection se bachao)
Don'ts ❌
- SELECT * (specific columns use karo)
- No WHERE in DELETE (sab delete ho jayega)
- Weak passwords
- Store passwords in plain text
Example
-- Good
SELECT name, price FROM products WHERE id = 1;
-- Bad
SELECT * FROM products;