ZREVRANGE
Synopsis
ZREVRANGE key start stop [WITHSCORES]
This command returns members
ordered from highest to lowest score in the specified range at sorted set key
.
start
and stop
represent the high and low index bounds respectively and are zero-indexed. They can also be negative
numbers indicating offsets from the beginning of the sorted set, with -1 being the first element of the sorted set, -2 the second element and so on.
If key
does not exist, an empty list is returned. If key
is associated with non sorted-set data, an error is returned.
Return value
Returns a list of members found in the range specified by start
, stop
, unless the WITHSCORES option is specified (see below).
ZREVRANGE Options
Examples
You can do this as shown below.
$ ZADD z_key 1.0 v1 2.0 v2 3.0 v3
(integer) 3
$ ZREVRANGE z_key 0 2
1) "v3"
2) "v2"
3) "v1"
With negative indices.
$ ZREVRANGE z_key -2 -1
1) "v2"
2) "v1"
Both positive and negative indices.
$ ZREVRANGE z_key 1 -1 WITHSCORES
1) "v2"
2) "2.0"
3) "v1"
4) "1.0"
(0 and (2 are exclusive bounds.
$ ZREVRANGE z_key (0 (2
(empty list or set)
Empty list returned if key doesn't exist.
$ ZREVRANGE z_key_no_exist 0 2 WITHSCORES
(empty list or set)
See also
zadd
, zcard
, zrange
, zrangebyscore
, zrem