124 lines
2.4 KiB
Markdown
124 lines
2.4 KiB
Markdown
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因收到Google相关通知，网站将会择期关闭。相关通知内容
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15 附录：更多有序集合操作命令
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查询有序集合的总个数
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语法：zcard key 示例：
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127.0.0.1:6379> zcard zset1
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(integer) 4
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查询 score 区间内的元素个数
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语法：zcount key min max 示例：
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127.0.0.1:6379> zcount zset1 0 10
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(integer) 4
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累加元素的 score 值
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语法：zincrby key increment member 示例：
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127.0.0.1:6379> zscore zset1 redis #查询 zset1 的 score 值
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"1"
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127.0.0.1:6379> zincrby zset1 2 redis #累加 score 值
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"3"
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127.0.0.1:6379> zscore zset1 redis
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"3"
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查询某元素倒序排名
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语法：zrevrank key member 示例：
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127.0.0.1:6379> zrevrank zset1 python #倒序查询
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(integer) 0
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127.0.0.1:6379> zrange zset1 0 -1 #正序列表
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1) "redis"
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2) "java"
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3) "golang"
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4) "python"
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根据排名删除元素
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语法：zremrangebyrank key start stop 示例：
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127.0.0.1:6379> zrange zset1 0 -1 #查询所有元素
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1) "redis"
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2) "java"
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3) "golang"
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4) "python"
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127.0.0.1:6379> zremrangebyrank zset1 0 2 #删除元素
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(integer) 3
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127.0.0.1:6379> zrange zset1 0 -1 #查询所有元素
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1) "python"
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删除 score 区间内的元素
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语法：zremrangebyscore key min max 示例：
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127.0.0.1:6379> zscore zset1 python
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"4"
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127.0.0.1:6379> zremrangebyscore zset1 4 5
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(integer) 1
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127.0.0.1:6379> zscore zset1 python
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(nil)
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复制交集元素到新集合
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语法：zinterstore destination numkeys key [key …] [WEIGHTS weight] [AGGREGATE SUM|MIN|MA 参数 numkeys 表示需要几个集合参与查询。 示例：
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127.0.0.1:6379> zrange zset1 0 -1
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1) "redis"
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2) "java"
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3) "golang"
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4) "python"
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127.0.0.1:6379> zrange zset2 0 -1
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1) "redis"
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2) "db"
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127.0.0.1:6379> zinterstore zset3 2 zset1 zset2
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(integer) 1
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127.0.0.1:6379> zrange zset3 0 -1
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1) "redis"
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复制并集元素到新集合
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语法：zunionstore destination numkeys key [key …] [WEIGHTS weight] [AGGREGATE SUM|MIN|MA 示例：
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127.0.0.1:6379> zrange zset1 0 -1
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1) "redis"
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2) "java"
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3) "golang"
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4) "python"
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127.0.0.1:6379> zrange zset2 0 -1
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1) "redis"
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2) "db"
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127.0.0.1:6379> zunionstore zset3 2 zset1 zset2
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(integer) 5
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127.0.0.1:6379> zrange zset3 0 -1
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1) "java"
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2) "golang"
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3) "redis"
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4) "python"
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5) "db"
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