HEXISTS

Synopsis

HEXISTS key field
This is a predicate to check whether or not the given field exists in the hash that is specified by the given key.

  • If the given `key` and `field` exist, 1 is returned.
  • If the given `key` or `field` does not exist, 0 is returned.
  • If the given `key` is associated with non-hash data, an error is raised.

    • Return value

    Returns existence status as integer, either 1 or 0.

    Examples

    $ HSET yugahash area1 "America"

    1

    $ HEXISTS yugahash area1

    1

    $ HEXISTS yugahash area_none

    0

    See also

    hdel, hget, hgetall, hkeys, hlen, hmget, hmset, hset, hincrby, hstrlen, hvals