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 43-30. pg_shdescription Columns
| Name | Type | References | Description |
|---|
| objoid | oid | any OID column | The OID of the object this description pertains to |
| classoid | oid | 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 |
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