Table Partitioning
Introduction Table Partitioning is a feature that physically divides a large table into smaller tables (called partitions), but logically, your application still sees it as a single table. When creating a table partitioning (parent table), that table is actually just a virtual table containing metadata, it has no corresponding heap file on the hard disk and its storage size is zero. On the other hand, each partition (child table) created is an independent physical table. PostgreSQL will allocate a separate heap file for each child table. Advantages Query Performance: When querying data, PostgreSQL will activate the Partition Pruning mechanism to skip irrelevant partitions and only scan the necessary partition, reading only the exact heap file of that partition on the disk. Data Lifecycle Management: Data retention is extremely efficient because you do not have to operate on a single massive table, which would cause table locks and generate many WAL files that slow down the system For i...