Commandszrevrangebyscore
ZREVRANGEBYSCORE
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Query members in a score range in reverse order
Usage: zrevrangebyscore key max min.
max and min are the score range, and the query is inclusive.
Use +inf, -inf to query all members.
Compared with zrangebyscore, results are returned from the highest score, and max comes first.
Use withscores to also return scores.
Example
| Command> | zadd mycom 2009 "Sun microsystems" 1992 Wang 2002 Netscape |
| Result> | 3 |
| Command> | zadd mycom 1998 "Digital Equipment" 2002 K-mart 1987 "American motors" |
| Result> | 3 |
| Command> | zrevrangebyscore mycom +inf -inf withscores |
| Result> |
0) 2009 -> Sun microsystems 1) 2002 -> Netscape 2) 2002 -> K-mart 3) 1998 -> Digital Equipment 4) 1992 -> Wang 5) 1987 -> American motors |
| Command> | zrevrangebyscore mycom 2002 1998 withscores |
| Result> |
0) 2002 -> Netscape 1) 2002 -> K-mart 2) 1998 -> Digital Equipment |
| Command> | zrevrangebyscore mycom +inf 2005 withscores |
| Result> | 0) 2009 -> Sun microsystems |
Use ( on max/min for exclusive bounds
Usage: zrangebyscore key (max (min.
Example
| Command> | zrevrangebyscore mycom (2002 (1987 withscores 2002 > score > 1987 |
| Result> |
0) 1998 -> Digital Equipment 1) 1992 -> Wang |
| Command> | zrevrangebyscore mycom 2002 (1998 withscores 2002 >= score > 1998 |
| Result> |
0) 2002 -> Netscape 1) 2002 -> K-mart |
Using limit offset count
Usage: zrangebyscore key max min limit offset count.
offset is the starting point, and count is the number of members to return.
offset starts from 0, and count must be 1 or greater. If count is 0, nothing is returned.
If limit is used, both offset and count are required and cannot be omitted.
Useful for paging.<
Example
| Command> | zrevrangebyscore mycom +inf -inf withscores limit 0 3 |
| Result> |
0) 2009 -> Sun microsystems 1) 2002 -> Netscape 2) 2002 -> K-mart |
| Command> | zrevrangebyscore mycom +inf -inf withscores limit 3 100 |
| Result> |
0) 1998 -> Digital Equipment 1) 1992 -> Wang 2) 1987 -> American motors |
Syntax
ZREVRANGEBYSCORE key max min [withscores] [limit offset count]
- Available since version 2.2.0.
- Time complexity is O(log(N)+M). N is the number of members in the set, and, M is the number of members returned.
| Related commands | ZRANGE, ZREVRANGE, ZREVRANGEBYSCORE, LRANGE |
| Clients for Java | Jedis, Lettuce, Redisson | Clients for C | Hiredis |
| << ZRANGEBYSCORE | ZREVRANGEBYSCORE | ZRANGEBYLEX >> |
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