Redis的hash操作

標籤：

hset key field value作用: 把key中 filed域的值設為value注:如果沒有field域,直接添加,如果有,則覆蓋原field域的值
127.0.0.1:6379> hset user1 name lisi
(integer) 1
127.0.0.1:6379> hset user1 age 28
(integer) 1
127.0.0.1:6379> hset user1 height 175
(integer) 1

hmset key field1 value1 [field2 value2 field3 value3 ......fieldn valuen]作用: 設定field1->N 個域, 對應的值是value1->N(對應PHP理解為  $key = array(file1=>value1, field2=>value2 ....fieldN=>valueN))\
127.0.0.1:6379> hmset user2 name wangwu age 23 height 160
OK

hget key field作用: 返回key中field域的值
127.0.0.1:6379> hget user1 name
"lisi"

hmget key field1 field2 fieldN作用: 返回key中field1 field2 fieldN域的值
127.0.0.1:6379> hmget user1 name age
1) "lisi"
2) "28"

hgetall key作用:返回key中,所有域與其值
127.0.0.1:6379> hgetall user1
1) "name"
2) "lisi"
3) "age"
4) "28"
5) "height"
6) "175"

hdel key field作用: 刪除key中 field域
127.0.0.1:6379> hgetall user1
1) "name"
2) "lisi"
3) "age"
4) "28"
5) "height"
6) "175"
127.0.0.1:6379> hdel user1 age
(integer) 1
127.0.0.1:6379> hgetall user1
1) "name"
2) "lisi"
3) "height"
4) "175"

hlen key作用: 返回key中元素的數量
127.0.0.1:6379> hlen user1
(integer) 2
127.0.0.1:6379> hlen user2
(integer) 3

hexists key field作用: 判斷key中有沒有field域
127.0.0.1:6379> hexists user1 age
(integer) 0
127.0.0.1:6379> hexists user1 name
(integer) 1

hincrby key field value作用: 是把key中的field域的值增長整型值value
127.0.0.1:6379> hincrby user2 age 10
(integer) 33
127.0.0.1:6379> hget user2 age
"33"

hincrbyfloat  key field value作用: 是把key中的field域的值增長浮點值value

127.0.0.1:6379> hincrbyfloat user2 age 0.5
"33.5"

hkeys key作用: 返回key中所有的field
127.0.0.1:6379> hkeys user2
1) "name"
2) "age"
3) "height"

kvals key作用: 返回key中所有的value
127.0.0.1:6379> hvals user2
1) "wangwu"
2) "33"
3) "160"

 

Redis的hash操作