Redis Zinterstore 命令
Redis 教程
· 2019-03-07 20:56:38
Redis Zinterstore 命令计算给定的一个或多个有序集的交集,其中给定 key 的数量必须以 numkeys 参数指定,并将该交集(结果集)储存到 destination 。
默认情况下,结果集中某个成员的分数值是所有给定集下该成员分数值之和。
语法
redis Zinterstore 命令基本语法如下:
redis 127.0.0.1:6379> ZINTERSTORE destination numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX]
可用版本
>= 2.0.0
返回值
保存到目标结果集的的成员数量。
实例
# 有序集 mid_test redis 127.0.0.1:6379> ZADD mid_test 70 "Li Lei" (integer) 1 redis 127.0.0.1:6379> ZADD mid_test 70 "Han Meimei" (integer) 1 redis 127.0.0.1:6379> ZADD mid_test 99.5 "Tom" (integer) 1 # 另一个有序集 fin_test redis 127.0.0.1:6379> ZADD fin_test 88 "Li Lei" (integer) 1 redis 127.0.0.1:6379> ZADD fin_test 75 "Han Meimei" (integer) 1 redis 127.0.0.1:6379> ZADD fin_test 99.5 "Tom" (integer) 1 # 交集 redis 127.0.0.1:6379> ZINTERSTORE sum_point 2 mid_test fin_test (integer) 3 # 显示有序集内所有成员及其分数值 redis 127.0.0.1:6379> ZRANGE sum_point 0 -1 WITHSCORES 1) "Han Meimei" 2) "145" 3) "Li Lei" 4) "158" 5) "Tom" 6) "199"
点击查看所有 Redis 教程 文章: https://www.codercto.com/courses/l/33.html
Web Design Index by Content 3 (Web Design Index)
Pepin Press (EDT) / Pepin Press / 2007-11 / USD 29.99
Would you like an overview of the state of the art in web design in a specific field? WEB DESIGN INDEX BY CONTENT provides exactly that: every year, 500 new designs are selected and grouped in more th......一起来看看 《Web Design Index by Content 3 (Web Design Index)》 这本书的介绍吧!