<ruby id="bdb3f"></ruby>

    <p id="bdb3f"><cite id="bdb3f"></cite></p>

      <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
        <p id="bdb3f"><cite id="bdb3f"></cite></p>

          <pre id="bdb3f"></pre>
          <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>

          <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
          <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>

          <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>

                <ruby id="bdb3f"></ruby>

                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                #### 集合 * * * * * [TOC] ###### SADD key member [member ...] 起始版本:1.0.0 時間復雜度:O(N) where N is the number of members to be added. 添加一個或多個指定的member元素到集合的 key中.指定的一個或者多個元素member 如果已經在集合key中存在則忽略.如果集合key 不存在,則新建集合key,并添加member元素到集合key中. 如果key 的類型不是集合則返回錯誤. 返回值 integer-reply:返回新成功添加到集合里元素的數量,不包括已經存在于集合中的元素. 歷史 = 2.4: 接受多個member 參數. Redis 2.4 以前的版本每次只能添加一個member元素. 例子 ~~~ redis> SADD myset "Hello" (integer) 1 redis> SADD myset "World" (integer) 1 redis> SADD myset "World" (integer) 0 redis> SMEMBERS myset 1) "World" 2) "Hello" ~~~ ###### SCARD key 起始版本:1.0.0 時間復雜度:O(1) 返回集合存儲的key的基數 (集合元素的數量). 返回值 integer-reply: 集合的基數(元素的數量),如果key不存在,則返回 0. 舉例 ~~~ redis> SADD myset "Hello" (integer) 1 redis> SADD myset "World" (integer) 1 redis> SCARD myset (integer) 2 ~~~ ###### SDIFF key [key ...] 起始版本:1.0.0 時間復雜度:O(N) where N is the total number of elements in all given sets. 返回的集合元素是第一個key的集合與后面所有key的集合的差集 返回一個集合與給定集合的差集的元素. 舉例: ~~~ key1 = {a,b,c,d} key2 = {c} key3 = {a,c,e} SDIFF key1 key2 key3 = {b,d} ~~~ 不存在的key認為是空集. 返回值 array-reply:結果集的元素. ~~~ redis> SADD key1 "a" (integer) 1 redis> SADD key1 "b" (integer) 1 redis> SADD key1 "c" (integer) 1 redis> SADD key2 "c" (integer) 1 redis> SADD key2 "d" (integer) 1 redis> SADD key2 "e" (integer) 1 redis> SDIFF key1 key2 1) "a" 2) "b" ~~~ ###### SDIFFSTORE destination key [key ...] 起始版本:1.0.0 時間復雜度:O(N) where N is the total number of elements in all given sets. 該命令類似于 SDIFF, 不同之處在于該命令不返回結果集,而是將結果存放在destination集合中. 如果destination已經存在, 則將其覆蓋重寫. 返回值 integer-reply: 結果集元素的個數. 例子 ~~~ redis> SADD key1 "a" (integer) 1 redis> SADD key1 "b" (integer) 1 redis> SADD key1 "c" (integer) 1 redis> SADD key2 "c" (integer) 1 redis> SADD key2 "d" (integer) 1 redis> SADD key2 "e" (integer) 1 redis> SDIFFSTORE key key1 key2 (integer) 2 redis> SMEMBERS key 1) "b" 2) "a" ~~~ ###### SINTER key [key ...] 起始版本:1.0.0 時間復雜度:O(N*M) worst case where N is the cardinality of the smallest set and M is the number of sets. 返回指定所有的集合的成員的交集. 例如: ~~~ key1 = {a,b,c,d} key2 = {c} key3 = {a,c,e} SINTER key1 key2 key3 = {c} ~~~ 如果key不存在則被認為是一個空的集合,當給定的集合為空的時候,結果也為空.(一個集合為空,結果一直為空). 返回值 array-reply: 結果集成員的列表. 例子 ~~~ redis> SADD key1 "a" (integer) 1 redis> SADD key1 "b" (integer) 1 redis> SADD key1 "c" (integer) 1 redis> SADD key2 "c" (integer) 1 redis> SADD key2 "d" (integer) 1 redis> SADD key2 "e" (integer) 1 redis> SINTER key1 key2 1) "c" ~~~ ###### SINTERSTORE destination key [key ...] 起始版本:1.0.0 時間復雜度:O(N*M) worst case where N is the cardinality of the smallest set and M is the number of sets. 這個命令與SINTER命令類似, 但是它并不是直接返回結果集,而是將結果保存在 destination集合中. 如果destination 集合存在, 則會被重寫. 返回值 integer-reply: 結果集中成員的個數. 例子 ~~~ redis> SADD key1 "a" (integer) 1 redis> SADD key1 "b" (integer) 1 redis> SADD key1 "c" (integer) 1 redis> SADD key2 "c" (integer) 1 redis> SADD key2 "d" (integer) 1 redis> SADD key2 "e" (integer) 1 redis> SINTERSTORE key key1 key2 (integer) 1 redis> SMEMBERS key 1) "c" ~~~ ###### SISMEMBER key member 起始版本:1.0.0 時間復雜度:O(1) 返回成員 member 是否是存儲的集合 key的成員. 返回值 integer-reply,詳細說明: 如果member元素是集合key的成員,則返回1 如果member元素不是key的成員,或者集合key不存在,則返回0 ##舉例 ~~~ redis> SADD myset "one" (integer) 1 redis> SISMEMBER myset "one" (integer) 1 redis> SISMEMBER myset "two" (integer) 0 ~~~ ###### SMEMBERS key 起始版本:1.0.0 時間復雜度:O(N) where N is the set cardinality. 返回key集合所有的元素. 該命令的作用與使用一個參數的SINTER 命令作用相同. 返回值 array-reply:集合中的所有元素. 舉例 ~~~ redis> SADD myset "Hello" (integer) 1 redis> SADD myset "World" (integer) 1 redis> SMEMBERS myset 1) "World" 2) "Hello" ~~~ ###### SUNION key [key ...] 起始版本:1.0.0 時間復雜度:O(N) where N is the total number of elements in all given sets. 返回給定的多個集合的并集中的所有成員. 例如: ~~~ key1 = {a,b,c,d} key2 = {c} key3 = {a,c,e} SUNION key1 key2 key3 = {a,b,c,d,e} ~~~ 不存在的key可以認為是空的集合. 返回值 array-reply:并集的成員列表 舉例 ~~~ redis> SADD key1 "a" (integer) 1 redis> SADD key1 "b" (integer) 1 redis> SADD key1 "c" (integer) 1 redis> SADD key2 "c" (integer) 1 redis> SADD key2 "d" (integer) 1 redis> SADD key2 "e" (integer) 1 redis> SUNION key1 key2 1) "a" 2) "b" 3) "c" 4) "d" 5) "e" ~~~
                  <ruby id="bdb3f"></ruby>

                  <p id="bdb3f"><cite id="bdb3f"></cite></p>

                    <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
                      <p id="bdb3f"><cite id="bdb3f"></cite></p>

                        <pre id="bdb3f"></pre>
                        <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>

                        <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
                        <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>

                        <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>

                              <ruby id="bdb3f"></ruby>

                              哎呀哎呀视频在线观看