Returns all fields and values of the hash stored at key
.
In the returned value, every field name is followed by its value, so the length
of the reply is twice the size of the hash.
*Return value
Array reply: list of fields and their values stored in the hash, or an
empty list when key
does not exist.
*Examples
redis>
HSET myhash field1 "Hello"
(integer) 1redis> HSET myhash field2 "World"
(integer) 1redis> HGETALL myhash
1) "field1" 2) "Hello" 3) "field2" 4) "World"