redis之Hash类型常用方法总结
格式：
存--HMGET key field [field ...]
取--HMGET key field [field ...]
M：表示能取多个值，many
H：表示hash类型
基本操作
-
hmset key field value [field value ...] 设置hash字段和值
127.0.0.1:6379> hmset hehe_key name "panlifu" age "100"
OK
127.0.0.1:6379> hgetall hehe_key
1) "name"
2) "panlifu"
3) "age"
4) "100"
127.0.0.1:6379> hmget hehe_key name
1) "panlifu"
127.0.0.1:6379> hmget hehe_key age
1) "100"
127.0.0.1:6379> -
hmget key field [field ...] 获取哈希表中某个字段的值
127.0.0.1:6379> hmset hehe_key name "panlifu" age "100"
OK
127.0.0.1:6379> hmget hehe_key name
1) "panlifu"
127.0.0.1:6379> hmget hehe_key age
1) "100"
127.0.0.1:6379> -
hgetall key 获取哈表表中所有字段的值及字段
127.0.0.1:6379> hmset hehe_key name "panlifu" age "100"
OK
127.0.0.1:6379> hgetall hehe_key
1) "name"
2) "panlifu"
3) "age"
4) "100" -
hdel key field [field ...] 删除一个或多个哈希表字段
127.0.0.1:6379> hmset hehe_key name "panlifu" age "100"
OK
127.0.0.1:6379> hmget hehe_key name
1) "panlifu"
127.0.0.1:6379> hmget hehe_key age
1) "100"
127.0.0.1:6379> hdel hehe_key name
(integer) 1
127.0.0.1:6379> hmget hehe_key name
1) (nil) -
hexists key field 查看哈希表中，指定的字段是否存在，存在返回1，不存在（哈希表或指定字段不存在）返回0
127.0.0.1:6379> hmset hehe name panlifu sex boy
OK
127.0.0.1:6379> hexists keke name
(integer) 0
127.0.0.1:6379> hexists hehe name
(integer) 1 -
hget key field 获取存储在哈希表中指定字段的值
127.0.0.1:6379> hmset hehe_key name "panlifu" age "100"
OK
127.0.0.1:6379> hgetall hehe_key
1) "name"
2) "panlifu"
3) "age"
4) "100"
127.0.0.1:6379> hmget hehe_key name
1) "panlifu"
127.0.0.1:6379> hmget hehe_key age
1) "100"
127.0.0.1:6379> -
hset key field 设置存储在哈希表中指定字段的值（只能存储一个）
127.0.0.1:6379> hset hehe age 10
(integer) 0
127.0.0.1:6379> hget hehe age
"10" -
hincrby key field increment 为哈希表 key 中的指定字段的整数值加上增量 increment
127.0.0.1:6379> hset hehe age 10
(integer) 0
127.0.0.1:6379> hget hehe age
"10"
127.0.0.1:6379> hincrby hehe age 1 # hash表hehe中的age字段的值增加1
(integer) 11
127.0.0.1:6379> hget hehe age
"11" -
hincrbyfloat key field increment 为哈希表 key 中的指定字段的浮点数值加上增量 increment 。
127.0.0.1:6379> hset hehe height 1.8
(integer) 1
127.0.0.1:6379> hincrbyfloat hehe height 0.5
"2.3"
127.0.0.1:6379> hget hehe height
"2.3" -
hkeys key 获取所有哈希表中的字段
127.0.0.1:6379> hkeys hehe
1) "name"
2) "age"
3) "sex"
4) "height" -
hlen key 获取哈希表中字段的数量
127.0.0.1:6379> hkeys hehe
1) "name"
2) "age"
3) "sex"
4) "height"
127.0.0.1:6379> hlen hehe
(integer) 4 -
hsetnx key field value 只有在字段 field 不存在时，设置哈希表字段的值。
127.0.0.1:6379> hgetall hehe
1) "name"
2) "panlifu"
3) "age"
4) "11"
5) "sex"
6) "boy"
7) "height"
8) "2.3"
127.0.0.1:6379> hsetnx hehe name lt
(integer) 0
127.0.0.1:6379> hgetall hehe
1) "name"
2) "panlifu"
3) "age"
4) "11"
5) "sex"
6) "boy"
7) "height"
8) "2.3" -
hvals key 获取哈希表中所有值
127.0.0.1:6379> hgetall hehe
1) "name"
2) "panlifu"
3) "age"
4) "11"
5) "sex"
6) "boy"
7) "height"
8) "2.3"
127.0.0.1:6379> hvals hehe
1) "panlifu"
2) "11"
3) "boy"
4) "2.3" -
HSCAN key cursor [MATCH pattern] [COUNT count] 迭代哈希表中的键值对。
# 1. 查看hash表pms:1中有多少条记录
127.0.0.1:6379[1]> hgetall pms:1
1) "stock"
2) "12"
3) "freeze"
4) "10"
5) "stock:1"
6) "11"
7) "stock:2"
8) "23"
9) "stock:freeze:1"
10) "111"
11) "stock:5"
12) "1212" # 2. 模糊查看pms:1下的键
127.0.0.1:6379[1]> hscan pms:1 0 match stock:* count 100
1) "0"
2) 1) "stock:1"
2) "11"
3) "stock:2"
4) "23"
5) "stock:freeze:1"
6) "111"
7) "stock:5"
8) "1212" # 3. 模糊查看pms:1下的键
127.0.0.1:6379[1]> hscan pms:1 0 match stock* count 100
1) "0"
2) 1) "stock"
2) "12"
3) "stock:1"
4) "11"
5) "stock:2"
6) "23"
7) "stock:freeze:1"
8) "111"
9) "stock:5"
10) "1212" # 4. 模糊查看pms:1下的键
127.0.0.1:6379[1]> hscan pms:1 0 match stock:freeze:* count 100
1) "0"
2) 1) "stock:freeze:1"
2) "111" # 5. 查看有多少个键
127.0.0.1:6379[1]> keys *
1) "pms:1"
2) "pms:freeze:21"
3) "pms:10"
4) "pms:11"
5) "pms:9"
6) "pms:4"
7) "name"
8) "pms:5"
9) "pms:8"
10) "pms:7"
11) "pms:2"
12) "go:123"
13) "pms:3"
14) "pms:6" # 6. 模糊查找pms:*的键
127.0.0.1:6379[1]> scan 0 match pms:* count 10
1) "3"
2) 1) "pms:1"
2) "pms:8"
3) "pms:freeze:21"
4) "pms:5"
5) "pms:11"
6) "pms:9"
7) "pms:4"
8) "pms:3"
9) "pms:6" # 7. 模糊查找pms:*的键，游标从3开始
127.0.0.1:6379[1]> scan 3 match pms:* count 10
1) "0"
2) 1) "pms:10"
2) "pms:7"
3) "pms:2