v.20.3Bug Fix
Fixed Performance Issues for UNION Selects Due to Thread Limit Error
Fixed performance for selects with UNION caused by wrong limit for the total number of threads. Fixes #12030. #12103 (Nikolai Kochetov).Fixed performance for selects with UNION caused by wrong limit for the total number of threads. Fixes #12030. #12103 (Nikolai Kochetov).