ClickHouse Upgrade & Migration Overview Safely upgrade ClickHouse server and the Node.js SDK, with rollback procedures and breaking change detection. Prerequisites - Current ClickHouse version known ( ) - Git for version control - Test suite for integration validation - Staging environment for pre-production testing Instructions Step 1: Check Current Versions Step 2: Review Changelog Key breaking changes to watch for: - Client API signature changes ( options) - Default setting changes (compression, timeouts) - New query result format behavior - Deprecated SQL functions removed in server upgra…