Release 375 (28 Mar 2022)#
General#
- Change behavior of - ALTER TABLE qualified_name TO unqualified_nameto leave the table in the schema. This is backwards-incompatible behavioral change. (#11282)
- Disallow table redirections for the - GRANT,- REVOKE, and- SET TABLE AUTHORIZATIONtable tasks. (#11302)
- Improve performance of queries that contain filter predicates on aggregation results. (#11469) 
- Improve performance of queries that contain - array_distinct(array_sort(…))expressions. (#8777)
- Fix - SHOW CREATE TABLEto show actual table name in case of table redirections, so that the statement can be used to recreate the table. (#11604)
- Fix scheduling for non-remotely accessible splits in fault-tolerant execution. (#11581) 
- Fix incorrect - is_nullablevalue in- information_schema.columnstable. (#11613)
JDBC driver#
Cassandra connector#
- Return - 0instead of row count in completed bytes. (#11644)
Delta Lake connector#
Hive connector#
Iceberg connector#
Kudu connector#
MongoDB connector#
MySQL connector#
- Add support for table comments. (#11211) 
Pinot connector#
PostgreSQL connector#
- Improve performance of queries involving - ORwith- IS NULL,- IS NOT NULLpredicates, or involving- NOTexpression by pushing predicate computation to the PostgreSQL database. (#11514)
- Improve performance of queries with predicates involving - nulliffunction by pushing predicate computation to the PostgreSQL database. (#11532)
- Improve performance of queries involving joins by pushing computation to the PostgreSQL database. (#11635) 
- Improve performance of queries involving predicates with arithmetic expressions by pushing predicate computation to the PostgreSQL database. (#11510) 
- Fix deletion of too much data when delete query involves a - LIKEpredicate. (#11615)