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Docs > Redis Commands > H > Hsetnx
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
iffield
is a new field in the hash andvalue
was set.0
iffield
already exists in the hash and no operation was performed.
@examples
HSETNX myhash field "Hello"
HSETNX myhash field "World"
HGET myhash field