Learn about the N+1 selects problem in ORM frameworks, its causes, performance impact, and effective solutions. Discover how to optimize database queries and prevent excessive roundtrips.
Learn how to find and remove duplicate records in SQL using multiple fields like email and name. Complete guide with examples for duplicate identification and cleanup.
Learn proven techniques to maximize SQLite INSERT performance in C applications for bulk data loading. Discover transaction batching, PRAGMA optimizations, and code-level strategies that can improve from 85 to 96,700 inserts/second.
Learn how to change PostgreSQL user passwords using ALTER USER command. Discover authentication methods, troubleshooting tips, and automated password management for secure database administration.
Learn proven techniques to eliminate duplicate code when using Entity Framework's .Include method across multiple classes. Discover extension methods, repository patterns, and best practices for cleaner, maintainable queries.
Learn efficient methods to retrieve the last record in each group in MySQL. Explore window functions, self-JOINs, and subquery approaches with performance comparisons for optimal database queries.
Discover the key differences between utf8_general_ci and utf8_unicode_ci collations in MySQL/MariaDB. Learn how performance impacts linguistic accuracy in sorting operations and when to use each collation type.
How to make Laravel automatically generate text for ModelNotFoundException with custom primary keys without database queries. Learn about built-in validation methods.
Learn effective ways to reduce the x-ui.db-wal file size on Ubuntu 22.04. Forced SQLite checkpoint, parameter configuration, and complete WAL file removal. Solution for 11GB file issue.
Discover the key differences between VARCHAR and NVARCHAR in database systems. Learn about storage requirements, performance implications, collation behavior, and when to use each data type for optimal database design.
How to properly implement database order updates with minimal queries and high performance. Solutions for OneToMany relationships and preventing race conditions.