GS_SLICEGROUP

GS_SLICEGROUP records information about slice groups created in the current database.

**Table 1** GS_SLICEGROUP columns
Name	Type	Description
oid	oid	Row identifier (hidden attribute, which must be specified).
slicename	name	Name of a slice group or slice, which is distinguished by type.
type	"char"	Object type. 't': slice group. 's': slice.
strategy	"char"	Distribution policy. 'r': range distribution.
bucketgroup	smallint	Bucket group to which the bucket allocated to a slice group belongs (value range: [1,4]).
bucketcnt	integer	Total number of buckets allocated to a slice group.
sgroupoid	oid	Slice group OID.
sindex	integer	Reserved column. A slice index is recorded when a single slice is distributed to multiple DNs.
nodeid	integer	Index of a DN to which a slice is distributed.
redis_nodeid	smallint	Reserved column. This column is used as the default value on a DN. On a CN, this column specifies the index of a DN to which the current slice's bucket is to be migrated during scaling.
bucket	smallint	Bucket to which a slice is distributed.
slicecnt	integer	Total number of slices in the current slice group. If the object is a slice, the default value -1 is used.
contained	boolean	Specifies whether the DN manages the bucket to which a slice is distributed. t (true): yes. f (false): no. The default value is f on a CN.
specified	boolean	Specifies whether a DN is specified for a slice. t (true): yes. f (false): no.
sliceorder	integer	Position of a slice in a slice group.
boundaries	text[]	Value range of a slice.
bucketversion	integer	Records the version number of the information that changes during subsequent range bucket scale-out.
bucketcsn	xid	Maximum CSN of each bucket on the source node before redistribution, which is used to determine the visibility of the new node.
bucketxid	xid	next_xid set for bringing a new node online during scaling, which is used to check whether the value is within the threshold range.
distributetype	oidvector	OID of the range distribution key type specified by a slice group.