bulk-insert

Optimizing large-scale data insertion operations

Databases Why PostgreSQL INSERT Slow on Empty Tables with FKs

PostgreSQL INSERTs slow on empty tables with foreign keys due to planner stats (reltuples=0) causing seq scans. Seeding 1 row or ON CONFLICT fixes it. Best practices for bulk inserts, ANALYZE, libpq sync.

#bulk-insert
#foreign-keys
#libpq
#performance
#postgresql
#query-planner

1 answer• 1 view

02/02/2026, 04:04 PM