pgroll vs QuerySurge

pgroll is an open-source command-line tool for PostgreSQL schema migrations that keeps old and new schema versions available while applications move between them. Its expand/contract workflow lets clients choose a version through PostgreSQL's search_path. The project describes migrations as zero-downtime and says it applies changes without locking the database; it can also backfill columns automatically when needed. For breaking changes, pgroll builds virtual schemas from views over physical tables and uses triggers to carry writes between old and new columns. Active migrations can be rolled back to the previous schema version. It supports PostgreSQL 14 and later, including RDS and Aurora, and is available for Linux, macOS, and Windows or self-hosting. It can convert SQL generated by ORMs, with examples for Alembic, Django, and Drizzle, though manual data migrations and SQL consolidation may be needed. On PostgreSQL 14, its versioned views do not respect row-level security policies, which can make it a poor choice for RLS users on that version. The project is licensed under Apache License 2.0.

QuerySurge is an AI-powered data quality platform for automating validation across an organization's data ecosystem, from extract and transform work through loading and reporting. It compares data between sources, targets and reports without manual SQL, and its AI can generate tests from mapping documents. The company lists more than 200 data-store connections, including Databricks, Snowflake, Microsoft Fabric, Oracle, Redshift, BigQuery, MongoDB, Power BI and Tableau. REST API validation supports CI/CD workflows, with integrations such as Jenkins, GitLab and Azure DevOps; test management connections include Jira, OpenText ALM and IBM Engineering Test Management. Deployment can be on bare-metal servers or virtual machines on premises or in a private cloud, with pay-as-you-go options in Azure and AWS. Trial choices are a 1-day hosted cloud trial for one user and a 15-day download trial for two users. The download trial lists Windows, Red Hat or Fedora, with minimum requirements of 16 GB RAM and 100 GB available disk space. Pricing note: From $514/user; no free plan is listed.