CSV bulk data import CLI
Published: 09.05.2023 12:00
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CSV bulk data import CLI
Python
A Click-based CLI tool that validates, transforms and bulk-inserts large CSV exports into a PostgreSQL database.
Migrated 400 k records in under 10 minutes with zero data loss.
Problem
A client migrating from a legacy system needed to import hundreds of thousands of records without a graphical tool or manual entry.
Solution
Built a Click CLI with schema validation, progress reporting, transactional inserts with rollback on error, and dry-run mode.