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  5. PG_DESCRIPTION

PG_DESCRIPTION

PG_DESCRIPTION stores optional descriptions (comments) for each database object. Descriptions of many built-in system objects are provided in the initial contents of PG_DESCRIPTION.

See also PG_SHDESCRIPTION, which performs a similar function for descriptions involving objects that are shared across a database cluster.

Table 1 PG_DESCRIPTION columns

Name

Type

Reference

Description

objoid

oid

Any OID column

OID of the object this description pertains to

classoid

oid

PG_CLASSoid

OID of the system catalog this object appears in

objsubid

integer

-

For a comment on a table column, this is the column number (the objoid and classoid refer to the table itself). For all other object types, this column is 0.

description

text

-

Arbitrary text that serves as the description of this object