Finding keys using wildcards

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I have saved the data using semicolon.

redis> keys party:*

1) "party:congress:president"
2) "party:bjp:president"
3) "party:bjp"
4) "party:sena"

Is there any command that will list of all the parties? In case of above example, I expect

congress
bjp
sena

No, there is no command to do that. But it would be trivial to implement it on client side, if you really have to.

Applications should never use the KEYS commands to retrieve data. KEYS blocks the whole Redis instance while it is scanning linearly the millions of keys you have stored. It is more a debugging command supposed to be used in administration tools.

With Redis, there is no btree structure to index the keys, so you cannot query for keys, except if your keys are stored in an existing collection (set, zset, etc ...)

KEYS – Redis, If you're looking for a way to find keys in a subset of your keyspace, consider using SCAN or sets. Supported glob-style patterns: h?llo matches hello , hallo and� Using wildcards with Excel functions In addition to using wildcards for filtering and finding data in Excel, there are several functions in which we can also leverage the power of wildcards. Some of these functions include ‘COUNTIF’ and ‘COUNTIFS’ , ‘SEARCH’ , ‘SUMIF’ AND ‘SUMIFS’ , as well as ‘HLOOKUP’ and ‘VLOOKUP’ .

You can use the SCAN command in redis to search for keys without blocking the whole database.

redis SCAN docs

This command has an optional MATCH filter that works much like the filter on the KEYS command.

redis> SCAN 0 MATCH party:*

1) <the cursor>
2) 1) "party:congress:president"
   2) "party:bjp:president"
   3) "party:bjp"
   4) "party:sena"

keep calling until the cursor returns back to 0 to get all parties (might not get ALL parties if they are being inserted while you are scanning)

available since 2.8

Find and Delete multiple keys matching by a pattern in Redis: The , When the number of keys in redis (use DBSIZE to know the count) is less, this method can be used but when redis size grows, using keys cmd is� Excel supports wildcard characters in formulas to find values that share a simple pattern. For example, if you are looking for a string with known ending or beginning, and unknown characters in the middle, you can use wildcard characters to tell Excel to look for all compatible matches.

You can use KEYS and * wildcard.

Example
SET user:1 Amir
SET user:2 Jack

To get all users using wildcard:

KEYS user:*

The result will be:

1) "user:1"
2) "user:2"

Redis SCAN and MATCH Command Tutorial, A tutorial providing explanations and examples on how to use the basic Redis The Redis SCAN command permits iterations to the set of keys within the SCAN 0 MATCH a: A wild card, such as “a“, can be used if part of� Word 2016 permits you to use wildcard operators in searches. A wildcard operator is a character that represents characters in a search expression. Wildcards aren’t for everybody. Using them requires a certain amount of expertise, but after you know how to use them, wildcards can be invaluable in searches and macros. The following table explains …

I think if you want to get the 'parties' data from redis then each time you save your regular data you also save the party name to the parties list, then you can get it easily

Finding and replacing characters using wildcards, To do so, bring up the Find dialog, click More and check Use wildcards. In Word 2000+, you can type in Unicode characters with the Alt-key (make sure� Using Wildcards in Design Center. You can use wildcards in Design Center to search for drawings and named objects in drawings, such as blocks, line types, layers, etc., without having to open the respective drawing. Let’s assume that we have many drawings in a folder and some drawings contain some blocks named A-door-1, B-door-2, etc.

The reason it fails is that Excel doesn’t work well when using wildcards directly after an equals sign in a formula. Any function that uses an equals sign in a logical test does not like to use wildcards in this manner. “But what about the SUMIFS function?”, I hear you saying.

Wildcards come in handy when you need to locate records with similar data or you're trying to track down a specific record based on limited information. But if you don't use the right wildcard

You can run a search using either the Search window or the Find toolbar. In either case, Acrobat searches the PDF body text, layers, form fields, and digital signatures. You can also include bookmarks and comments in the search. Only the Find toolbar includes a Replace With option.

Comments
  • You have to maintain separate list for that, its not expensive
  • I saw in this answer that is possible to search by partial key. As I am just learning about redis, I'm not sure how accurate it is. I think you might need to update your answer to include more details.
  • It is possible to search by partial key, it is not possible to efficiently search by partial key, except if you explicitly create a data structure for this. Moreover, the original question here is not about searching, but about manipulation of the result (which is better done on client side).
  • Good point, I was looking for partial search in keys and this was second result in google.