SQLite's Speed Secret: How Intelligent Merging Eliminates Query Bottlenecks

Subquery flattening reveals a critical truth: temporary tables and redundant scans are invisible performance killers in database operations. By intelligently merging queries into single passes, SQLite eliminates overhead that most developers never see but always feel. Learning these optimization patterns helps developers write queries that align with how databases actually execute code, transforming performance bottlenecks into competitive advantages.