Filters containing NULL literals are now considered during index analysis in ClickHouse.
Why it matters
Previously, filters with NULL values were ignored during index analysis, which could lead to suboptimal index usage and query performance. By including filters with NULL literals in the index analysis, ClickHouse can better optimize query execution plans, resulting in improved performance and more accurate query optimizations for queries involving NULL conditions.How to use it
This feature is applied automatically during index analysis; no additional user action or configuration is required to enable it. When writing queries with filters that include NULL literals, these filters will now influence index utilization.