Faster Analysis for Complex Queries with JOINs and Sub-Queries
Official CH changelog text
Faster analysis for queries with a large number of JOINs and sub-queries.
Improved Query Analysis Performance for Complex JOINs and Sub-Queries
Why it matters
Enhances the efficiency of query analysis when dealing with queries that involve a large number of JOIN operations and deeply nested sub-queries, reducing planning time and improving overall query performance.
How to use it
This improvement is integrated into the query analyzer of ClickHouse and activates automatically when complex queries with many JOINs or sub-queries are processed. Users do not need to enable any specific settings.