Increments the score of member
in the sorted set stored at key
by increment
. If member
does not exist in the sorted set, it is added with increment
as its score (as if its previous score was 0.0
). If key
does not exist, a new sorted set with the specified member
as its sole member is created.
An error is returned when key
exists but does not hold a sorted set.
The score
value should be the string representation of a numeric value, and accepts double precision floating point numbers. It is possible to provide a negative value to decrement the score.
@return
@bulk-string-reply: the new score of member
(a double precision floating point number), represented as string.
@examples
ZADD myzset 1 "one"
ZADD myzset 2 "two"
ZINCRBY myzset 2 "one"
ZRANGE myzset 0 -1 WITHSCORES