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tidb-server v2.0.4
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@shenli shenli released this 15 Jun 08:46
· 227 commits to release-2.0 since this release
v2.0.4
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Learn about vigilant mode.

New Features

  • Support the ALTER TABLE t DROP COLUMN a CASCADE syntax
  • Support configuring the value of tidb_snapshot to TSO

Improvements

  • Refine the display of statement types in monitoring items
  • Optimize the accuracy of query cost estimation
  • Configure the backoff max delay parameter of gRPC
  • Support configuring the memory threshold of a single statement in the configuration file
  • Refactor the error of Optimizer

Bug Fixes

  • Fix the side effects of the Cast Decimal data
  • Fix the wrong result issue of the Merge Join operator in specific scenarios
  • Fix the issue of converting the Null object to String
  • Fix the issue of casting the JSON type of data to the JSON type
  • Fix the issue that the result order is not consistent with MySQL in the condition of Union + OrderBy
  • Fix the compliance rules issue when the Union statement checks the Limit/OrderBy clause
  • Fix the compatibility issue of the Union All result
  • Fix a bug in predicate pushdown
  • Fix the compatibility issue of the Union statement with the For Update clause
  • Fix the issue that the concat_ws function mistakenly truncates the result
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