Help Center/ GaussDB/ Feature Guide(Centralized_8.x)/ Partitioned Table/ Partition Concurrency Control/ DQL/DML-DQL/DML Concurrency

Updated on 2024-06-07 GMT+08:00

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DQL/DML-DQL/DML Concurrency

Level 1–3 locks will be used for DQL/DML statements on tables and partitions. DQL and DML statements do not block each other and DQL/DML-DQL/DML concurrency is supported.

If a partition is added to a partitioned table that supports automatic partitioning due to services such as INSERT, UPDATE, UPSERT, MERGE INTO, and COPY, the operation is regarded as a partition-level DDL operation.

Parent topic: Partition Concurrency Control

Previous topic: Common Lock Design

Next topic: DQL/DML-DDL Concurrency

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