Community Learn Tools Library Leisure

English

Programming Dictionary

Online technical manual for service programmers

Popular searches：
PHP
MySQL
jquery
HTML
CSS

Redis Related dictionaries

del Translation example syntax

dump Translation example syntax

exists Translation example syntax

expire Translation example syntax

expireat Translation example syntax

keys Translation example syntax

migrate Translation example syntax

move Translation example syntax

object Translation example syntax

presist Translation example syntax

pexpire Translation example syntax

pexpireat Translation example syntax

pttl Translation example syntax

randomkey Translation example syntax

rename Translation example syntax

renamenx Translation example syntax

restore Translation example syntax

sort Translation example syntax

ttl Translation example syntax

type Translation example syntax

scan Translation example syntax

bitcount Translation example syntax

bitop Translation example syntax

append Translation example syntax

decr Translation example syntax

decrby Translation example syntax

get Translation example syntax

getbit Translation example syntax

getrange Translation example syntax

getset Translation example syntax

incr Translation example syntax

incrby Translation example syntax

incrbyfloat Translation example syntax

mget Translation example syntax

mset Translation example syntax

msetnx Translation example syntax

psetex Translation example syntax

set Translation example syntax

setbit Translation example syntax

setex Translation example syntax

setnx Translation example syntax

setrange Translation example syntax

strlen Translation example syntax

hdel Translation example syntax

hexists Translation example syntax

hget Translation example syntax

hgetall Translation example syntax

hincrby Translation example syntax

hincrbyfloat Translation example syntax

hkeys Translation example syntax

hlen Translation example syntax

hmget Translation example syntax

hmset Translation example syntax

hset Translation example syntax

hsetnx Translation example syntax

hvals Translation example syntax

blpop Translation example syntax

brpop Translation example syntax

brpoplpush Translation example syntax

lindex Translation example syntax

linsert Translation example syntax

llen Translation example syntax

lpop Translation example syntax

lpush Translation example syntax

lpushx Translation example syntax

lrange Translation example syntax

lrem Translation example syntax

lset Translation example syntax

ltrim Translation example syntax

rpop Translation example syntax

rpoplpush Translation example syntax

rpush Translation example syntax

rpushx Translation example syntax

sadd Translation example syntax

scard Translation example syntax

sdiff Translation example syntax

sdiffstore Translation example syntax

sinter Translation example syntax

sinterstore Translation example syntax

sismember Translation example syntax

smembers Translation example syntax

smove Translation example syntax

spop Translation example syntax

srandmember Translation example syntax

srem Translation example syntax

sunion Translation example syntax

sunionstore Translation example syntax

zadd Translation example syntax

zcard Translation example syntax

zcount Translation example syntax

zincrby Translation example syntax

zrange Translation example syntax

zrangebyscore Translation example syntax

zrank Translation example syntax

zrem Translation example syntax

zremrangebyrank Translation example syntax

zremrangebyscore Translation example syntax

zrevrange Translation example syntax

zrevrangebyscore Translation example syntax

zrevrank Translation example syntax

redis RENAME command

Chinese translationRecent Updates：2018-05-16 09:30:42

UK[ˌri:ˈneɪm] US[ˌriːˈneɪm]

vt. Rename..., change its name

Third person singular: renames Present participle: renaming Past tense: renamed Past participle: renamed

redis RENAME command Video explanation

redis RENAME command syntax

Function:Rename key to newkey. When key and newkey are the same, or key does not exist, an error is returned. When newkey already exists, the RENAME command will overwrite the old value.

Syntax: RENAME key newkey

Available versions: >= 1.0.0

Time complexity : O(1)

Return: It will prompt OK when the name change is successful, and an error will be returned when it fails.

redis RENAME command example

# key 存在且 newkey 不存在
redis> SET message "hello world"
OK
redis> RENAME message greeting
OK
redis> EXISTS message               # message 不复存在
(integer) 0
redis> EXISTS greeting              # greeting 取而代之
(integer) 1
# 当 key 不存在时，返回错误
redis> RENAME fake_key never_exists
(error) ERR no such key
# newkey 已存在时， RENAME 会覆盖旧 newkey
redis> SET pc "lenovo"
OK
redis> SET personal_computer "dell"
OK
redis> RENAME pc personal_computer
OK
redis> GET pc
(nil)
redis:1> GET personal_computer      # 原来的值 dell 被覆盖了
"lenovo"

submit