HEXISTS
Syntax
1. 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
1. dragonfly> HSET myhash field1 "foo"
2. (integer) 1
3. dragonfly> HEXISTS myhash field1
4. (integer) 1
5. dragonfly> HEXISTS myhash field2
6. (integer) 0
