Zhang Mingli

### Cloudberry Database version _No response_ ### What happened Direct dispatch in parallel mode may have no improvement compared to a non-parallel direct dispatch. non-parallel direct dispatch: ```sql gpadmin=# explain...

### Cloudberry Database version _No response_ ### What happened ../../../src/include/crypto/sm4.h:12:27: error: typedef redefinition with different types ('unsigned long' vs 'unsigned long long') typedef unsigned long int uint64_t; ### What you...

[Bug] config error: sed: 1: "src/include/pg_config.h": unterminated substitute pattern

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### Cloudberry Database version _No response_ ### What happened configure: creating ./config.status sed: 1: "src/include/pg_config.h": unterminated substitute pattern make: *** [config.status] Error 1 make: *** Deleting file `config.status' ### What...

Parallel DEDUP_SEMI and DEDUP_SEMI_REVERSE Join.(A new approach to process Semi Join Query in Parallel of MPP)

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To handle semi join in parallel, we have enabled Parallel Semi join. This commit introduces a new approach to process Semi Join Query in Parallel of MPP, enable DEDUP_SEMI and...

[Bug] unstable resource group cases: resgroup_cancel_terminate_concurrency/resgroup_dumpinfo/resgroup_views

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### Cloudberry Database version main ### What happened https://github.com/cloudberrydb/cloudberrydb/actions/runs/11102859132/job/30844343864 ```shell DIFF FILE: ../gpdb_src/src/test/isolation2/regression.diffs ---------------------------------------------------------------------- diff -I HINT: -I CONTEXT: -I GP_IGNORE: -U3 /code/gpdb_src/src/test/isolation2/expected/resgroup/resgroup_cancel_terminate_concurrency.out /code/gpdb_src/src/test/isolation2/results/resgroup/resgroup_cancel_terminate_concurrency.out --- /code/gpdb_src/src/test/isolation2/expected/resgroup/resgroup_cancel_terminate_concurrency.out 2024-09-30 17:27:33.490609064 +0800 +++...

Fix https://github.com/cloudberrydb/cloudberrydb/issues/557. This issue also exists for AOCS. This is introduced by GPDB commit ed364586b99. For AO/AOCS partition tables, it's possible to update across partitions. And it does have deleteDesc...

[Feature] Dynamic Table.

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Dynamic Table is a an auto-refreshing materialized view which could be constructed by base tables, external tables, materialized views and dynamic tables. And it could be used to answer query...

Optimize DISTINCT, ORDER BY and DISTINCT ON when Aggregation without Group By.

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For query which has Aggregation but without Group by clause, the DISTINCT/DISTINCT ON/ORDER BY clause could be removed as there would be one row returned at most. And there is...

### Cloudberry Database version _No response_ ### What happened According to @yjhnupt 's catch: https://github.com/apache/cloudberry/pull/720#discussion_r1851410975 ### What you think should happen instead mvname without shcema may be condused, add the...

[AQUMV] Answer Aggregation Query Directly.

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This commits enable answer query which has aggregation directly. Use the results of view has aggregations to avoid compute those from origin table. This may lead to significant efficiency gains...