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.

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 a foreign 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

NOTE: In the Lite scenario, openGauss provides this system catalog, but the SQL on Anywhere capabilities are unavailable.