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GS_ENCRYPTED_COLUMNS

GS_ENCRYPTED_COLUMNS records information about encrypted columns in the encrypted equality feature. Each record corresponds to an encrypted column.

Table 1 GS_ENCRYPTED_COLUMNS columns

Name	Type	Description
oid	oid	Row identifier (hidden column)
rel_id	oid	Table OID
column_name	name	Name of an encrypted column.
column_key_id	oid	Foreign key, which is the CEK OID
encryption_type	int1	Encryption type. The value can be 2 (DETERMINISTIC) or 1 (RANDOMIZED).
data_type_original_oid	oid	ID of the original data type of the encrypted column. For details about the value, see oid in the PG_TYPE system catalog.
data_type_original_mod	int4	Original data type modifier of the encrypted column. For details about the value, see atttypmod in the PG_ATTRIBUTE system catalog. The value of data_type_original_mod is generally –1 when data types are not specific.
create_date	timestamp	Time when an encrypted column is created

NOTE

In the Lite scenario, openGauss provides this system catalog, but the encrypted equality feature is unavailable.