HDEL key field
This command removes the specified field from a hash stored at the key.
If the field was present in the hash it is returned and 1 is returned, otherwise, 0 is returned and no operation is performed.
TIME COMPLEXITY: O(1)
RETURN VALUE: Integer reply
Syntax:
HDEL KEY_NAME FIELD_NAME
Example 1: When key and field are present
redis:6379> HDEL myhash field(integer) 1
Output
1
Example 2: When key and field are not present
redis:6379> HDEL myhash field(integer) 0
Output
0
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