ClickHouse 26.4 introduces improvements across query execution, indexing, SQL functionality, observability, and system stability. This release includes: This article provides a structured overview of the most relevant changes for production environments. Breaking Changes Strict Semantics for Bool in IN Operator The IN operator now uses exact value semantics for the Bool type. Previously, non-boolean numeric … Continue reading ClickHouse 26.4 Release: Features, Performance Improvements, and Breaking Changes