GS_LOGICAL_CLASS

GS_LOGICAL_CLASS records information about database objects required for logical decoding and the relationships between the database objects.

**Table 1** GS_LOGICAL_CLASS columns
Column	Type	Description
relname	name	Table name.
relnamespace	oid	Namespace OID.
relpersistence	"char"	Catalog durability (for example, p indicates a permanent table).
relkind	"char"	Table type (for example, r indicates a relationship).
relnatts	smallint	Number of columns in the table.
relhaspkey	bool	Specifies whether the table has (or has ever had) a primary key index.
relcmprs	tinyint	Compression attribute of a row in a table.
relreplident	"char"	Replica identity replication mode.
spacenode	oid	Tablespace OID.
dbnode	oid	Database OID.
relnode	oid	Identifier of the physical storage file corresponding to the table.
createtime	timestamp with time zone	Timestamp when a tuple is inserted.
csnmin	bigint	CSN when a tuple is inserted.
csnmax	bigint	CSN when a tuple is updated or deleted.
originid	integer	Source identifier of a tuple.
relid	oid	Relationship identifier (table OID).
relowner	oid	Identifier of the table owner.
reltoastrelid	oid	OID of the TOAST table (if any).
relhasoids	boolean	Specifies whether the table has an OID column.
relam	oid	Identifier that indicates the indexing method used by the table.
reloptions	text[]	Additional options for saving the table, stored in text format.
relbucket	oid	Identifier of the hash partitioning bucket to which the table belongs.
parttype	"char"	Specifies whether the table is a partitioned table. p indicates that the table is a partitioned table, and n indicates that the table is not a partitioned table.