v.21.7Improvement

Avoid Concealing Scalar Subquery Errors in ClickHouse

Avoid hiding errors like Limit for rows or bytes to read exceeded for scalar subqueries. #24545 (nvartolomei).
Avoid hiding errors such as Limit for rows or bytes to read exceeded in scalar subqueries.

Why it matters

This feature addresses the issue where important errors occurring during the execution of scalar subqueries, particularly limits exceeded for rows or bytes to read, were previously suppressed or hidden. By making these errors visible, users gain clearer insight into query execution problems, facilitating easier debugging and more reliable query results.

How to use it

The feature is applied automatically in ClickHouse; users do not need to enable any special settings. Errors related to limits exceeded in scalar subqueries will now properly surface during query execution.