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redis HEXISTS command

Chinese translationRecent Updates：2018-05-16 10:45:18

exist

UK[ɪgˈzɪst] US[ɪɡˈzɪst]

vi.Exist; survive; live; continue to exist

Third person singular: exists Present participle: existing Past tense: existed Past participle: existed

redis HEXISTS command Video explanation

redis HEXISTS command syntax

Function: Check whether the given domain field exists in the hash table key.

Syntax: HEXISTS key field

Available versions:>= 2.0.0

Time complexity : O(1)

Return: If the hash table contains the given field, return 1. If the hash table does not contain the given field, or key does not exist, 0 is returned.

redis HEXISTS command example

redis> HEXISTS phone myphone
(integer) 0
redis> HSET phone myphone nokia-1110
(integer) 1
redis> HEXISTS phone myphone
(integer) 1

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