参考 http://info.citusdata.com/rs/235-CNE-301/images/Columnar_Store_for_PostgreSQL_Using_cstore_fdw_Webinar_Slides_0915.pdf 原理及官方测试 https://www.cybertec-postgresql.com/en/citus-row-store-vs-column-store-in-postgresql/ https://www.citusdata.com/blog/2021/03/06/citus-10-columnar-com...
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column of many is updated, then the mutation structure will only include the updated column. This allows for fast updates of small columns without the overhead of reading or rewriting larger columns (an advantage compared to the MVCC techniques used by systems such as CStore™ and PostgreSQL...