The most direct way to work with Redis data with the adapter is to use a Redis key as a table name. Below you will find sample data, queries, and results based on Redis data types.

Note: This page contains redis-cli syntax. Use either your own instance of redis-cli or the RunCommand procedure to send queries from the adapter to the Redis server for direct execution.

Redis Strings

Create a string in Redis:

> set mykey somevalue
OK

If you perform a SELECT query on mykey the adapter will return the following:

SELECT * FROM mykey

RedisKey	ValueIndex	Value	RedisType	ValueScore
mykey	1	somevalue	String	NULL

Redis Lists

Create a list in Redis:

> rpush mylist A B C
(integer) 3

If you perform a SELECT query on mylist the adapter will return the following:

SELECT * FROM mylist

RedisKey	ValueIndex	Value	RedisType	ValueScore
mylist	1	A	List	NULL
mylist	2	B	List	NULL
mylist	3	C	List	NULL

Deleting Redis Lists

List type records can also be removed using DELETE statements, though they must be performed by specifying the Value column in the WHERE clause:

DELETE FROM Keys WHERE Value = 'myvalue' AND RedisKey = 'mylist'

Note that using ValueIndex in the WHERE clause of the DELETE statement is not supported.

Redis Sets

Create a set in Redis:

> sadd myset 1 2 3
(integer) 3

If you perform a SELECT query on myset the adapter will return the following (note that Redis can return the elements of a set in any order):

SELECT * FROM myset

RedisKey	ValueIndex	Value	RedisType	ValueScore
myset	1	2	Set	NULL
myset	2	1	Set	NULL
myset	3	3	Set	NULL

Redis Sorted Sets

Create a ZSet (sorted set) in Redis:

> zadd hackers 1940 "Alan Kay" 1957 "Sophie Wilson" 1953 "Richard Stallman" 1949 "Anita Borg"
(integer) 9

If you perform a SELECT query on hackers the adapter will return the following:

SELECT * FROM hackers

RedisKey	ValueIndex	Value	RedisType	ValueScore
hackers	1	Alan Kay	ZSet	1940
hackers	2	Anita Borg	ZSet	1949
hackers	3	Richard Stallman	ZSet	1953
hackers	4	Sophie Wilson	ZSet	1957

Redis Hashes

Create a hash in Redis:

> hmset user:1000 username antirez birthyear 1977 verified 1
OK

If you perform a SELECT query on user:1000 the adapter will return the following:

SELECT * FROM user:1000

RedisKey	ValueIndex	Value	RedisType	ValueScore
user:1000	username	antirez	Hash	NULL
user:1000	birthyear	1977	Hash	NULL
user:1000	verified	1	Hash	NULL

Querying Key Patterns as Tables

You can retrieve multiple Redis keys at once by using a pattern (e.g., "user:*") as a table name. For example, start by adding several keys to Redis that match a pattern:

> hmset user:1000 name "John Smith" email "john.smith@example.com" password "s3cret"
OK
> hmset user:1001 name "Mary Jones" password "hidden" email "mjones@example.com"
OK

If you use user:* as the table name, the adapter will retrieve all Redis key-value pairs whose keys match the pattern. You can see the expected results below:

SELECT * FROM [user:*]

RedisKey	ValueIndex	Value	RedisType	ValueScore
user:1000	name	John Smith	Hash	NULL
user:1000	email	john.smith@example.com	Hash	NULL
user:1000	password	s3cret	Hash	NULL
user:1001	name	Mary Jones	Hash	NULL
user:1001	email	mjones@example.com	Hash	NULL
user:1001	password	hidden	Hash	NULL