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luhuayi 177cd61a57 DWS DEVG 910.211 version

Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: luhuayi <luhuayi@huawei.com>
Co-committed-by: luhuayi <luhuayi@huawei.com>

2025-05-05 07:44:03 +00:00

PGXC_CLASS

H: hash
M: Modulo
N: Round Robin
R: Replicate

PGXC_CLASS records the replicated or distributed information for each table.

**Table 1** PGXC_CLASS columns
Column	Type	Description
pcrelid	OID	Table OID
pclocatortype	Char	Locator type H: hash M: Modulo N: Round Robin R: Replicate
pchashalgorithm	Smallint	Distributed tuple using the hash algorithm
pchashbuckets	Smallint	Value of a harsh container
pgroup	Name	Node group name
redistributed	Char	Whether a table has been redistributed
redis_order	Integer	Redistribution sequence
pcattnum	int2vector	Column number used as a distribution key
nodeoids	oidvector_extend	List of distributed table node OIDs
options	Text	Extension status information, which is a reserved column in the system

Parent topic: System Catalogs