Returns the rank of member
in the sorted set stored at key
, with the scores ordered from low to high. The rank (or index) is 0-based, which means that the member with the lowest score has rank 0
.
Use ZREVRANK
to get the rank of an element with the scores ordered from high to low.
@return
member
exists in the sorted set, @integer-reply: the rank of member
.member
does not exist in the sorted set or key
does not exist, @bulk-string-reply: nil
.@examples
ZADD myzset 1 "one"
ZADD myzset 2 "two"
ZADD myzset 3 "three"
ZRANK myzset "three"
ZRANK myzset "four"