HLEN

Attention

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Synopsis

HLEN key
This command fetches the number of fields in the hash that is associated with the given key.

If the `key` does not exist, 0 is returned.

If the `key` is associated with non-hash data, an error is raised.

Returns number of fields in the specified hash.

$ HSET yugahash area1 "Africa"

$ HSET yugahash area2 "America"

$ HLEN yugahash