HEXISTS
Syntax
HEXISTS key field
Time complexity: O(1)
ACL categories: @read, @hash, @fast
Returns if field is an existing field in the hash stored at key.
Return
Integer reply, specifically:
1if the hash containsfield.0if the hash does not containfield, orkeydoes not exist.
Examples
dragonfly> HSET myhash field1 "foo"
(integer) 1
dragonfly> HEXISTS myhash field1
(integer) 1
dragonfly> HEXISTS myhash field2
(integer) 0