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Huge log file output for aggregated query over a UNION ALL subselect

Details

Detail name	Value
Changelog Number	31043
Type	Bug
Status	Resolved
Affected Versions	Exasol 2026.1.0
Fix Versions	Exasol 2026.1.1
Resolution Date	2026-08-06

Description

In rare cases an aggregated query over a UNION ALL subselect can cause huge log file output exceeding 1 GB for the default log level "notice".

Workarounds

Run the statement CONTROL SET TRACE LEVEL QUIET before affected statements and enable the normal logging afterwards again using CONTROL SET TRACE LEVEL NOTICE. This only affects one session but requires DBA privileges.
Start the database with the database parameter -traceLevel=0 (see Add database parameters) to reduce the log level globally (not recommended).

Fix

We removed the huge log output.

Huge log file output for aggregated query over a UNION ALL subselect

Details

Description

Workarounds

Fix

PRODUCT

RESOURCES