PG_NAMESPACE

PG_NAMESPACE records the namespaces, that is, schema-related information.

**Table 1** PG_NAMESPACE columns
Name	Type	Description
nspname	name	Name of the namespace
nspowner	oid	Owner of the namespace
nsptimeline	bigint	Timeline when the namespace is created on the DN This column is for internal use and valid only on the DN.
nspacl	aclitem[]	Access permissions. For details, see GRANT and REVOKE.
permspace	bigint	Permanent tablespace quota of the schema, in bytes
usedspace	bigint	Used permanent tablespace size of the schema, in bytes
nsptype	char	Distinguishes external schemas from common schemas. This parameter is supported only in 8.3.0 and later versions to adapt to LakeFormation features. NOTE: The nsptype field is added to distinguish external schemas from common schemas. e indicates an external schema. i indicates a common schema.

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