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Commits on Sep 15, 2023

• executor, statistics: add logs in failpoint to debug flaky test (pingcap#47013)

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Commits on Sep 13, 2023

• *: support collect and async load stats for mv index (pingcap#46731)

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Commits on Sep 1, 2023

• *: provide a variable to ignore the real-time stats in the planner (pingcap#43988)

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Commits on Aug 23, 2023

• executor: fix plan replayer for sql file input wrongly fetch startTS after OnTxnEnd (pingcap#46201)

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Commits on Jul 21, 2023

• *: support plan replayer for historical stats (pingcap#44592)

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Commits on Jun 27, 2023

• *: revise implementation of optimizer fix control (pingcap#44959)

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Commits on Jun 26, 2023

• planner, sessionctx: reintroduce pingcap#41996 through optimizer fix control (pingcap#44865)

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Commits on Jun 14, 2023

• domain: fix missing stats file when using plan replayer capture (pingcap#44667)

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• server: try to use latest infoschema if failed to get snapshot infoschema in historical stats HTTP API (pingcap#44650)

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• domain, executor: add the missing debug trace for manual plan replayer (pingcap#44600)

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Commits on Jun 13, 2023

• statistics, planner: use the correct IndexInfo in GenerateHistCollFromColumnInfo() (pingcap#44441)

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Commits on May 10, 2023

• domain: use safe interface to run internal SQLs when GC plan replayer dump files (pingcap#43648)

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• *: fix incorrect handling of EXECUTE stmt in plan replayer capture (pingcap#43662)

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• domain, util/replayer: increase GC duration for plan replayer capture file to 7 days (pingcap#43664)

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Commits on May 6, 2023

• planner, statistics: fix panic in plan replayer debug trace and add more tests (pingcap#43278)

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Commits on Apr 25, 2023

• *: add a new variable to control whether to invalidate plan cache when related table analyzed (pingcap#43390)

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Commits on Apr 19, 2023

• *: add more stats related diagnostic information to execution plan and slow log (pingcap#43114)

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• planner, statistics: add more debug trace (pingcap#43200)

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• planner, sessionctx: add tidb_opt_fix_control variable (pingcap#43191)

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Commits on Apr 18, 2023

• statistics, planner: add debug trace base utils and trace for GetRowCountByXXX() (pingcap#43120)

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Commits on Apr 17, 2023

• *: add debug trace to plan replayer (pingcap#43048)

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• planner: escape the string when display Range to make it more clear (pingcap#43046)

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Commits on Apr 7, 2023

• executor: fix wrong peer count and improper handling of partitioned table in TABLE_STORAGE_STATS table (pingcap#42612)

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Commits on Mar 17, 2023

• planner: revert pingcap#41996 due to an execution plan regression in JOB workload (pingcap#42362)

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Commits on Mar 16, 2023

• planner: fix appropriate index stats may be missed when estimating NDV for inner side of index join (pingcap#42261)

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Commits on Mar 15, 2023

• planner, sessionctx: add variable to control index selection for "WHERE b ORDER BY a LIMIT n" (pingcap#42116)

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Commits on Mar 14, 2023

• planner: add an upper bound for estimated row count of inner side of index join (pingcap#41996)

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Commits on Feb 28, 2023

• statistics: use histogram buckets bounds to enhance string match functions estimation (pingcap#40338)

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Commits on Feb 16, 2023

• planner: fix missing operators in the encoded plan (pingcap#41461)

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Commits on Feb 14, 2023

• planner: add missing CanExprsPushDown checks when generating IndexMerge path for or (pingcap#41361)

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• planner: stabilize tests in binary_plan_test.go (pingcap#41356)

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Commits on Feb 9, 2023

• planner: adjust estimated row count when pushing Limit and keep order for partitioned table (pingcap#41103)

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Commits on Jan 16, 2023

• executor: fix concurrent use of testkit in tests and add nil check (pingcap#40627)

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Commits on Jan 12, 2023

• statistics: fix a calculation logic flaw in (*Index).GetRowCount (pingcap#40522)

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Commits on Jan 11, 2023

• statistics: fix estimation error when ranges are too many and modify count is large (pingcap#40472)

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