英文:
Can I perform a regex search on Redis values?
问题
我尝试使用RedisSearch，但那里只能执行模糊搜索，但我需要执行正则表达式搜索，例如：
键: "12345"
值: { 名称: "Maruti"}
搜索 "aru" 将返回结果 "Mumbai"，基本上形成的正则表达式是 *aru*。有人能帮助我使用Redis实现吗？
英文:
I tried using RedisSearch but there you can perform a fuzzy search, but I need to perform a regex search like:
key: "12345"
value: { name: "Maruti"}
searching "aru" will give the result "Mumbai", basically the regex formed is *aru*. Can anyone help me out how can I achieve it using Redis ?
答案1
得分: 1
这是可行的，但我不建议这样做 - 性能会受到很大影响。
然而，如果必须这样做，您可以使用RedisGears来进行类似的即席正则表达式查询，如下所示：
127.0.0.1:6379> HSET mykey name Maruti
(integer) 1
127.0.0.1:6379> HSET anotherkey name Moana
(integer) 1
127.0.0.1:6379> RG.PYEXECUTE "import re\np = re.compile('.*aru.*')\nGearsBuilder().filter(lambda x: p.match(x['value']['name'])).map(lambda x: x['key']).run()"
1) 1) "mykey"
2) (empty array)
以下是为了可读性而提供的Python代码：
import re
p = re.compile('.*aru.*')
GearsBuilder() \
.filter(lambda x: p.match(x['value']['name'])) \
.map(lambda x: x['key']) \
.run()
英文:
This can be done, but I do not recommend it - performance will be greatly impacted.
If you must, however, you can use RedisGears for ad-hoc regex queries like so:
127.0.0.1:6379> HSET mykey name Maruti
(integer) 1
127.0.0.1:6379> HSET anotherkey name Moana
(integer) 1
127.0.0.1:6379> RG.PYEXECUTE "import re\np = re.compile('.*aru.*')\nGearsBuilder().filter(lambda x: p.match(x['value']['name'])).map(lambda x: x['key']).run()"
1) 1) "mykey"
2) (empty array)
Here's the Python code for readability:
import re
p = re.compile('.*aru.*')
GearsBuilder() \
.filter(lambda x: p.match(x['value']['name'])) \
.map(lambda x: x['key']) \
.run()
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