ApsaraDB RDS for PostgreSQL - Supports Data Sampling
Apr 21 2020
ApsaraDB RDS for PostgreSQLContent
Target customers: Internet and enterprise users. Features released: ApsaraDB RDS for PostgreSQL supports the tsm_system_rows and tsm_system_time plug-ins, which allow you to sample blocks or rows by specifying the sampling percentage or the number of rows. Sampling is a way to randomly extract data from tables and is commonly applied in scenarios such as analysis, test, and approximate calculation.