Class Range (3.60.0) 

Range(mapping=None, *, ignore_unknown_fields=False, **kwargs)

A Range represents a range of keys in a database. The keys themselves are encoded in "sortable string format", also known as ssformat. Consult Spanner's open source client libraries for details on the encoding.

Each range represents a contiguous range of rows, possibly from multiple tables/indexes. Each range is associated with a single paxos group (known as a "group" throughout this API), a split (which names the exact range within the group), and a generation that can be used to determine whether a given Range represents a newer or older location for the key range.

Attributes
Name Description
start_key bytes
The start key of the range, inclusive. Encoded in "sortable string format" (ssformat).
limit_key bytes
The limit key of the range, exclusive. Encoded in "sortable string format" (ssformat).
group_uid int
The UID of the paxos group where this range is stored. UIDs are unique within the database. References Group.group_uid.
split_id int
A group can store multiple ranges of keys. Each key range is named by an ID (the split ID). Within a group, split IDs are unique. The split_id names the exact split in group_uid where this range is stored.
generation bytes
generation indicates the freshness of the range information contained in this proto. Generations can be compared lexicographically; if generation A is greater than generation B, then the Range corresponding to A is newer than the Range corresponding to B, and should be used preferentially.