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51.47. pg_shdescription

The catalog pg_shdescription stores optional descriptions (comments) for shared database objects. Descriptions can be manipulated with the COMMENT command and viewed with psql's \d commands.

See also pg_description, which performs a similar function for descriptions involving objects within a single database.

Unlike most system catalogs, pg_shdescription is shared across all databases of a cluster: there is only one copy of pg_shdescription per cluster, not one per database.

Table 51.47. pg_shdescription Columns

Column Type

Description

objoid oid (references any OID column)

The OID of the object this description pertains to

classoid oid (references pg_class.oid)

The OID of the system catalog this object appears in

description text

Arbitrary text that serves as the description of this object