Data Definition Language

About Database Kernel | Deep Analysis on the Optimization and Evolution of PolarDB DDL Locks

This article provides an overview of the experience and progress in end-to-end Metadata Lock (MDL) lock management in Alibaba Cloud PolarDB.

Deep Insights into Flink SQL: Flink Advanced Tutorials

This article explains the key functional changes in Flink 1.9 from the user perspective and describes the design and scenarios of the new TableEnvironment.

PostgreSQL Data Rotate Method Introduction: Overwrite History Data by Time

This article explains the method to rotate data using partition tables in polling mode while using truncate to clear partitions.