PostgreSQL's Bulk Loading Breakthrough: The COPY Command's 10-50x Speed Advantage

Bulk data loading reveals the hidden cost of abstraction layers: using ORMs or executemany forces per-statement overhead through parsing, planning, and execution. PostgreSQL's COPY command bypasses these entirely by writing directly to the table heap, delivering 10-50x faster loads. This principle applies universally—understanding database internals matters more than convenience abstractions when handling massive datasets.