PG_EXTENSION_DATA_SOURCE

PG_EXTENSION_DATA_SOURCE records information about external data sources. An external data source contains information about an external database, such as its password encoding. It is mainly used with Extension Connector. By default, only the sysadmin user can query this system catalog. The current feature is a lab feature. Contact Huawei technical support before using it.

**Table 1** PG_EXTENSION_DATA_SOURCE columns
Name	Type	Reference	Description
oid	oid	-	Row identifier (hidden attribute, which must be specified)
srcname	name	-	Name of an external data source
srcowner	oid	PG_AUTHID.oid	Owner of an external data source
srctype	text	-	Type of an external data source. It is NULL by default.
srcversion	text	-	Version of an external data source. It is NULL by default.
srcacl	aclitem[]	-	Access permissions.
srcoptions	text[]	-	Option used for foreign data sources, expressed in a string in the format of keyword=value