HGETDEL key FIELDS numfields field [field ...]
@write
,
@hash
,
@fast
,
Get and delete the value of one or more fields of a given hash key. When the last field is deleted, the key will also be deleted.
redis> HSET mykey field1 "Hello" field2 "World" field3 "!"
(integer) 3
redis> HGETALL mykey
1) "field1"
2) "Hello"
3) "field2"
4) "World"
5) "field3"
6) "!"
redis> HGETDEL mykey FIELDS 2 field3 field4
1) "!"
2) (nil)
redis> HGETALL mykey
1) "field1"
2) "Hello"
3) "field2"
4) "World"
redis> HGETDEL mykey FIELDS 2 field1 field2
1) "Hello"
2) "World"
redis> KEYS *
(empty array)
nil
for fields that do not exist.