pg_appendonly

The pg_appendonly table contains information about the storage options and other characteristics of append-optimized tables.

column type references description
relid oid The table object identifier (OID) of the table.
segrelid oid Table on-disk segment file id.
blkdirrelid oid Block used for on-disk column-oriented table file.
visimaprelid oid Visibility map for the table.
version smallint AO relation version.

Parent topic: System Catalogs Definitions

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