Redis Hexists 命令
Redis 教程
· 2019-03-07 08:57:53
Redis Hexists 命令用于查看哈希表的指定字段是否存在。
语法
redis Hexists 命令基本语法如下:
redis 127.0.0.1:6379> HEXISTS KEY_NAME FIELD_NAME
可用版本
>= 2.0.0
返回值
如果哈希表含有给定字段,返回 1 。 如果哈希表不含有给定字段,或 key 不存在,返回 0 。
实例
redis 127.0.0.1:6379> HSET myhash field1 "foo" (integer) 1 redis 127.0.0.1:6379> HEXISTS myhash field1 (integer) 1 redis 127.0.0.1:6379> HEXISTS myhash field2 (integer) 0
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