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RENAMENX key newkey

相关命令

始于1.0.0可用。

时间复杂度： O(1)

Renames key to newkey if newkey does not yet exist. It returns an error under the same conditions as RENAME.

返回值

Integer reply, specifically:

  • 1 if key was renamed to newkey.
  • 0 if newkey already exists.

例子

redis> SET mykey "Hello" 

  1. OK

redis> SET myotherkey "World" 

  1. OK

redis> RENAMENX mykey myotherkey 

  1. (integer) 0

redis> GET myotherkey 

  1. "World"
redis>

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