Sets field
in the hash stored at key
to value
, only if field
does not yet exist. If key
does not exist, a new key holding a hash is created. If field
already exists, this operation has no effect.
@return
@integer-reply, specifically:
1
if field
is a new field in the hash and value
was set.0
if field
already exists in the hash and no operation was performed.@examples
HSETNX myhash field "Hello"
HSETNX myhash field "World"
HGET myhash field