October 8, 2018
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SQL language changes
EXECUTEis no longer an explainable statement. As an alternative, it is possible toPREPARE ... AS EXPLAIN ...and then execute the prepared statement to see the plan for a prepared query. #30725
Admin UI changes
- Removed read and write graphs from the Hardware Dashboard. #30655
Bug fixes
EXPLAIN ALTER DATABASE ... RENAMEno longer renames the target database. #30661EXPLAIN ALTER TABLE ... RENAMEno longer renames the target table. #30661EXPLAIN ALTER TABLE ... RENAME COLUMNno longer renames the target column. #30661EXPLAIN ALTER INDEX ... RENAMEno longer renames the target index. #30661- It is once again possible to use
EXPLAINfor all preparable statements, and prepare all explainable statements. #30661 TRUNCATEis now properly restricted in SQL transactions like other DDL statements. #30661TRUNCATEcan now be used withEXPLAINand as a prepared statement. #30661- The default unit for converting a string value when setting the
statement_timeoutsession variable is now milliseconds for compatibility with PostgreSQL. #30654
Doc updates
- Added a Migration Overview and specific guides for Migrating from Postgres, Migrating from MySQL, and Migrating from CSV. #3766
- Called out performance-optimized configuration files for Kubernetes single-cluster deployments. #3827 #3838
- Documented how replication zones affect secondary indexes. #3818
- Clarified that per-replica constraints in replication zones do not need to add up to total replicas. #3812
- Clarified a known limitation about schema changes inside transactions. #3814
- Updated the
ARRAYdocumentation to cover casting from array toSTRINGvalues. #3813 - Documented the use of
--localitywhen usingcockroach gen haproxyto generate an HAProxy config file. #3809 - Updated the session variables documentation. #3799
- Updated the list of information included in a
debug zip. #3796
Contributors
This release includes 31 merged PRs by 15 authors.
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