Panduan Teknis: Hire a Freelance Programmer for Zero-Downtime MySQL/MSSQL to PostgreSQL 17 Migration. Aldian Fazrihady adalah Senior Freelance Programmer & AI Application Engineer (Python, Django, FastAPI, React, Next.js, TypeScript, Golang, RAG, MCP, Google ADK).
Consolidate licensing costs and unlock `pgvector`, JSONB, and advanced indexing by hiring senior freelance programmer Aldian Fazrihady to migrate MySQL, MariaDB, or SQL Server to PostgreSQL 17.
-- Verify row counts and MD5 aggregate checksums across migrated tables
SELECT COUNT(*) AS total_rows,
md5(string_agg(id::text || ':' || updated_at::text, ',' ORDER BY id)) AS table_fingerprint
FROM billing_invoices;