![]() You can check the ACL SETUSER command manual for more information on setting ACL access rules. Starting from Redis 7.0, any use of GET or BY which reference external key pattern will only be allowed in case the current user running the command has full key read permissions.įull key read permissions can be set for the user by, for example, specifying '%R~*' or '~* with the relevant command access rules. In this case, any use of GET or BY which reference external key pattern will cause the command to fail with an error. When enabling Redis cluster-mode there is no way to guarantee the existence of the external keys on the node which the command is processed on. It is also possible to GET the element itself using the special pattern #: SORT mylist BY weight_* GET object_* GET # The GET option can be used multiple times in order to get more keys for everyĮlement of the original list, set or sorted set. Retrieving external keys based on the elements in a list, set or sorted set canīe done with the following command: SORT mylist BY weight_* GET object_* In some cases, it is more useful to get the actual objects instead of their IDs Our previous example returns just the sorted IDs. This is useful if you want to retrieve external keys (see the GET optionīelow) without the overhead of sorting. The BY option can also take a non-existent key, which causes SORT to skip These key names are obtained substituting the first occurrence of * with theĪctual value of the element in the list ( 1, 2 and 3 in this example). Used to generate the keys that are used for sorting. The BY option takes a pattern (equal to weight_* in this example) that is The following statement: SORT mylist BY weight_* Weight_3, SORT can be instructed to use these weights to sort mylist with When these objects have associated weights stored in weight_1, weight_2 and Unique IDs of objects stored in object_1, object_2 and object_3. Let's say the list mylist contains the elements 1, 2 and 3 representing Instead of comparing the actual elements in the list, set or sorted set. ![]() Sometimes you want to sort elements using external keys as weights to compare In descending order: SORT mylist LIMIT 0 5 ALPHA DESC The following example will return the first 5 elements, lexicographically sorted Starting at element 0 ( offset is zero-based): SORT mylist LIMIT 0 10Īlmost all modifiers can be used together. The following example will return 10 elements of the sorted version of mylist, Skip and the count argument, specifying the number of elements to return from This modifier takes the offset argument, specifying the number of elements to The number of returned elements can be limited using the LIMIT modifier. Redis is UTF-8 aware, assuming you correctly set the LC_COLLATE environment Lexicographically, use the ALPHA modifier: SORT mylist ALPHA When mylist contains string values and you want to sort them In order to sort the numbers from large to small, use the DESC modifier: SORT mylist DESC With the elements sorted from small to large. This is SORT in its simplest form: SORT mylistĪssuming mylist is a list of numbers, this command will return the same list Interpreted as double precision floating point number. ![]() There is also the SORT_RO read-only variant of this command.īy default, sorting is numeric and elements are compared by their value Returns or stores the elements contained in the list, set or When the elements are not sorted, complexity is O(N). ]] Available since: 1.0.0 Time complexity: O(N+M*log(M)) where N is the number of elements in the list or set to sort, and M the number of returned elements. Syntax SORT key [GET pattern [GET pattern
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