Summary
| Command Name | HVALS |
| Usage | Get all values of a hash |
| Group |  hash |
| ACL Category | @read @hash @slow |
| Time Complexity | O(1) |
| Flag | READONLY |
| Arity | 2 |
Notes
- Time complexity is O(N), where N is the number of fields in the hash.
Signature
HVALS <key>
Usage
Get all the values of a hash. Only the values are returned as a list.
Notes
- To get the keys we can use the HKEYS command.
- We can use the HGETALL command to get all the keys and values.
Arguments
| Parameter | Description | Name | Type |
|---|---|---|---|
| <key> | Name of the key of the hash | key | key |
Return Value
| Return value | Case for the return value | Type |
|---|---|---|
| List of values | On successful we get the list of values of the hash | array[string] |
| (empty array) | If the key does not exist | (empty array) |
| error | If applied to wrong data type | error |
Notes
- If the command is applied to a key that is not a hash, then the following error is returned-
(error) WRONGTYPE Operation against a key holding the wrong kind of value
Examples
Here are a few examples of the usage examples of the Redis HVALS command-
# Redis HGET command examples
# Set some has fields usign HSET
127.0.0.1:6379> hset customer:99:address street "2855 W 76 Country Blvd" city Branson state Mississippi zip 65616 country "United States"
(integer) 5
# Check zip field of the hash
127.0.0.1:6379> hget customer:99:address zip
"65616"
# Check state field of the hash
127.0.0.1:6379> hget customer:99:address state
"Mississippi"
# Try to get value of a field that does not exist
# We get (nil)
127.0.0.1:6379> hget customer:99:address nonexistingfield
(nil)
# Try to get field value from a non existing hash
# We get (nil)
127.0.0.1:6379> hget nonexistinghash somefield
(nil)
# Set a string value
127.0.0.1:6379> set bigboxstr "some string in the box"
OK
# Try to use the HGET on a string type of key
# We get an error
127.0.0.1:6379> hget bigboxstr somefield
(error) WRONGTYPE Operation against a key holding the wrong kind of value Notes
- If the key does not exist or the field does not exist then the command returns Null (nil)
Code Implementations
Redis HGET command example implementation in Golang, NodeJS, Java, C#, PHP, Python, Ruby-
// Redis HVALS command example in Golang
package main
import (
"context"
"fmt"
"github.com/redis/go-redis/v9"
)
var rdb *redis.Client
var ctx context.Context
func init() {
rdb = redis.NewClient(&redis.Options{
Addr: "localhost:6379",
Username: "default",
Password: "",
DB: 0,
})
ctx = context.Background()
}
func main() {
/**
* Set hash field/value
* Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868
* Result: (integer) 8
*/
hsetResult, err := rdb.HSet(ctx, "customer:1786:address",
"street", "6414 Losee Rd",
"city", "North Las Vegas",
"state", "North Carolina",
"zip", "89086",
"phone", "(702) 399-9939",
"country", "United States",
"latitude", "36.27704",
"longitude", "-115.115868",
).Result()
if err != nil {
fmt.Println("Command: hset customer:1786:address street \"6414 Losee Rd\" city \"North Las Vegas\" state \"North Carolina\" zip \"89086\" phone \"(702) 399-9939\" country \"United States\" latutude 36.27704 longitude -115.115868 | Error: " + err.Error())
}
fmt.Println("Command: hset customer:1786:address street \"6414 Losee Rd\" city \"North Las Vegas\" state \"North Carolina\" zip \"89086\" phone \"(702) 399-9939\" country \"United States\" latutude 36.27704 longitude -115.115868 | Result: ", hsetResult)
/**
* Check hash full data
* Command: hgetall customer:1786:address
* Result:
* 1) "street"
* 2) "6414 Losee Rd"
* 3) "city"
* 4) "North Las Vegas"
* 5) "state"
* 6) "North Carolina"
* 7) "zip"
* 8) "89086"
* 9) "phone"
* 10) "(702) 399-9939"
* 11) "country"
* 12) "United States"
* 13) "latutude"
* 14) "36.27704"
* 15) "longitude"
* 16) "-115.115868"
*/
hgetAllResult, err := rdb.HGetAll(ctx, "customer:1786:address").Result()
if err != nil {
fmt.Println("Command: hgetall customer:1786:address | Error: " + err.Error())
}
fmt.Println("Command: hgetall customer:1786:address | Result: ", hgetAllResult)
/**
* Get all the values of hash
*
* Command: hvals customer:1786:address
* Result:
* 1) "6414 Losee Rd"
* 2) "North Las Vegas"
* 3) "North Carolina"
* 4) "89086"
* 5) "(702) 399-9939"
* 6) "United States"
* 7) "36.27704"
* 8) "-115.115868"
*/
hvalsResult, err := rdb.HVals(ctx, "customer:1786:address").Result()
if err != nil {
fmt.Println("Command: hvals customer:1786:address | Error: " + err.Error())
}
fmt.Println("Command: hvals customer:1786:address | Result: ", hvalsResult)
/**
* Use HVALS on a non existing key
* We get (empty list)
*
* Command: hvals nonexistingkey
* Result: (empty array)
*/
hvalsResult, err = rdb.HVals(ctx, "nonexistingkey").Result()
if err != nil {
fmt.Println("Command: hvals nonexistingkey | Error: " + err.Error())
}
fmt.Println("Command: hvals nonexistingkey | Result: ", hvalsResult)
/**
* Set string value
*
* Command: set bigboxstr "some stiring value for HVALS command testing"
* Result: OK
*/
setResult, err := rdb.Set(ctx, "bigboxstr", "some stiring value for HVALS command testing", 0).Result()
if err != nil {
fmt.Println("Command: set bigboxstr \"some stiring value for HVALS command testing\" | Error: " + err.Error())
}
fmt.Println("Command: set bigboxstr \"some stiring value for HVALS command testing\" | Result: " + setResult)
/**
* Try to use HVALS on a hash
* We get an error
*
* Command: hvals bigboxstr
* Result: (error) WRONGTYPE Operation against a key holding the wrong kind of value
*/
hvalsResult, err = rdb.HVals(ctx, "bigboxstr").Result()
if err != nil {
fmt.Println("Command: hvals bigboxstr | Error: " + err.Error())
}
fmt.Println("Command: hvals bigboxstr | Result: ", hvalsResult)
}
Output:
Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868 | Result: 8
Command: hgetall customer:1786:address | Result: map[city:North Las Vegas country:United States latitude:36.27704 longitude:-115.115868 phone:(702) 399-9939 state:North Carolina street:6414 Losee Rd zip:89086]
Command: hvals customer:1786:address | Result: [6414 Losee Rd North Las Vegas North Carolina 89086 (702) 399-9939 United States 36.27704 -115.115868]
Command: hvals nonexistingkey | Result: []
Command: set bigboxstr "some stiring value for HVALS command testing" | Result: OK
Command: hvals bigboxstr | Error: WRONGTYPE Operation against a key holding the wrong kind of value
Command: hvals bigboxstr | Result: [] Notes
- Use “
HVals” method from redis-go module. - Signature of the method is-
HVals(ctx context.Context, key string) *StringSliceCmd
// Redis HVALS command example in JavaScript(NodeJS)
import { createClient } from "redis";
// Create redis client
const redisClient = createClient({
url: "redis://default:@localhost:6379",
});
redisClient.on("error", (err) =>
console.log("Error while connecting to Redis", err)
);
// Connect Redis client
await redisClient.connect();
/**
* Set hash field/value
* Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868
* Result: (integer) 8
*/
let commandResult = await redisClient.hSet("customer:1786:address", {
street: "6414 Losee Rd",
city: "North Las Vegas",
state: "North Carolina",
zip: "89086",
phone: "(702) 399-9939",
country: "United States",
latitude: "36.27704",
longitude: "-115.115868",
});
console.log(
'Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868 | Result: ' +
commandResult
);
/**
* Check hash full data
* Command: hgetall customer:1786:address
* Result:
* 1) "street"
* 2) "6414 Losee Rd"
* 3) "city"
* 4) "North Las Vegas"
* 5) "state"
* 6) "North Carolina"
* 7) "zip"
* 8) "89086"
* 9) "phone"
* 10) "(702) 399-9939"
* 11) "country"
* 12) "United States"
* 13) "latutude"
* 14) "36.27704"
* 15) "longitude"
* 16) "-115.115868"
*/
commandResult = await redisClient.hGetAll("customer:1786:address");
console.log(
"Command: hgetall customer:1099:address | Result: ",
commandResult
);
/**
* Get all the values of hash
*
* Command: hvals customer:1786:address
* Result:
* 1) "6414 Losee Rd"
* 2) "North Las Vegas"
* 3) "North Carolina"
* 4) "89086"
* 5) "(702) 399-9939"
* 6) "United States"
* 7) "36.27704"
* 8) "-115.115868"
*/
commandResult = await redisClient.hVals("customer:1786:address");
console.log(
"Command: hvals customer:1099:address | Result: ",
commandResult
);
/**
* Use HVALS on a non existing key
* We get (empty list)
*
* Command: hvals nonexistingkey
* Result: (empty array)
*/
commandResult = await redisClient.hVals("nonexistingkey");
console.log("Command: hvals nonexistingkey | Result: ", commandResult);
/**
* Set string value
* Command: set bigboxstr "some stiring value for HVALS command testing"
* Result: OK
*/
commandResult = await redisClient.set(
"bigboxstr",
"some stiring value for HVALS command testing"
);
console.log(
'Command: set bigboxstr "some stiring value for HVALS command testing" | Result: ',
commandResult
);
/**
* Try to use HVALS on a hash
* We get an error
* Command: hvals bigboxstr
* Result: (error) WRONGTYPE Operation against a key holding the wrong kind of value
*/
try {
commandResult = await redisClient.hVals("bigboxstr");
console.log("Command: hvals bigboxstr | Result: " + commandResult);
} catch (err) {
console.log("Command: hvals bigboxstr | Error: ", err);
}
process.exit(0);
Output:
Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868 | Result: 8
Command: hgetall customer:1099:address | Result: [Object: null prototype] {
street: '6414 Losee Rd',
city: 'North Las Vegas',
state: 'North Carolina',
zip: '89086',
phone: '(702) 399-9939',
country: 'United States',
latitude: '36.27704',
longitude: '-115.115868'
}
Command: hgetall customer:1099:address | Result: [
'6414 Losee Rd',
'North Las Vegas',
'North Carolina',
'89086',
'(702) 399-9939',
'United States',
'36.27704',
'-115.115868'
]
Command: hvals nonexistingkey | Result: []
Command: set bigboxstr "some stiring value for HVALS command testing" | Result: OK
Command: hvals bigboxstr | Error: [ErrorReply: WRONGTYPE Operation against a key holding the wrong kind of value] Notes
- Use the function “
hVals” of node-redis. - Signature of the method-
function hVals(key: RedisCommandArgument)
// Redis HVALS Command example in Java
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class HVals {
public static void main(String[] args) {
JedisPool jedisPool = new JedisPool("localhost", 6379);
try (Jedis jedis = jedisPool.getResource()) {
/**
* Set hash field/value
*
* Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868
* Result: (integer) 8
*/
Map<String, String> hashData = new HashMap<>() {{
put("street", "6414 Losee Rd");
put("city", "North Las Vegas");
put("state", "North Carolina");
put("zip", "89086");
put("phone", "(702) 399-9939");
put("country", "United States");
put("latitude", "36.27704");
put("longitude", "-115.115868");
}};
long hsetResult = jedis.hset("customer:1786:address", hashData);
System.out.println("Command: hset customer:1786:address street \"6414 Losee Rd\" city \"North Las Vegas\" state \"North Carolina\" zip \"89086\" phone \"(702) 399-9939\" country \"United States\" latutude 36.27704 longitude -115.115868 | Result: " + hsetResult);
/**
* Check hash full data
*
* Command: hgetall customer:1786:address
* Result:
* 1) "street"
* 2) "6414 Losee Rd"
* 3) "city"
* 4) "North Las Vegas"
* 5) "state"
* 6) "North Carolina"
* 7) "zip"
* 8) "89086"
* 9) "phone"
* 10) "(702) 399-9939"
* 11) "country"
* 12) "United States"
* 13) "latutude"
* 14) "36.27704"
* 15) "longitude"
* 16) "-115.115868"
*/
Map<String, String> hgetAllResult = jedis.hgetAll("customer:1786:address");
System.out.println("Command: hgetall customer:1099:address | Result: " + hgetAllResult.toString());
/**
* Get all the values of hash
*
* Command: hvals customer:1786:address
* Result:
* 1) "6414 Losee Rd"
* 2) "North Las Vegas"
* 3) "North Carolina"
* 4) "89086"
* 5) "(702) 399-9939"
* 6) "United States"
* 7) "36.27704"
* 8) "-115.115868"
*/
List<String> hvalsResult = jedis.hvals("customer:1786:address");
System.out.println("Command: hvals customer:1099:address | Result: " + hvalsResult.toString());
/**
* Use HVALS on a non existing key
* We get (empty list)
*
* Command: hvals nonexistingkey
* Result: (empty array)
*/
hvalsResult = jedis.hvals("nonexistingkey");
System.out.println("Command: hvals nonexistingkey | Result: " + hvalsResult);
/**
* Set string value
*
* Command: set bigboxstr "some stiring value for HVALS command testing"
* Result: OK
*/
String setResult = jedis.set("bigboxstr", "some stiring value for HVALS command testing");
System.out.println("Command: set bigboxstr \"some stiring value for HVALS command testing\" | Result: " + setResult);
/**
* Try to use HVALS on a hash
* We get an error
*
* Command: HVALS bigboxstr
* Result: (error) WRONGTYPE Operation against a key holding the wrong kind of value
*/
try {
hvalsResult = jedis.hvals("bigboxstr");
System.out.println("Command: hvals bigboxstr | Result: " + hvalsResult);
} catch (Exception e) {
System.out.println("Command: hvals bigboxstr | Error: " + e.getMessage());
}
}
jedisPool.close();
}
}
Output:
Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868 | Result: 8
Command: hgetall customer:1099:address | Result: {zip=89086, country=United States, state=North Carolina, city=North Las Vegas, phone=(702) 399-9939, street=6414 Losee Rd, latitude=36.27704, longitude=-115.115868}
Command: hvals customer:1099:address | Result: [89086, United States, North Las Vegas, (702) 399-9939, 6414 Losee Rd, 36.27704, North Carolina, -115.115868]
Command: hvals nonexistingkey | Result: []
Command: set bigboxstr "some stiring value for HVALS command testing" | Result: OK
Command: hvals bigboxstr | Error: WRONGTYPE Operation against a key holding the wrong kind of value Notes
- Use method “
hvals” from Jedis package. - The signature of the method is-
public List<String> hvals(final String key)
// Redis HVALS command examples in C#
using StackExchange.Redis;
namespace HVals
{
internal class Program
{
static void Main(string[] args)
{
ConnectionMultiplexer redis = ConnectionMultiplexer.Connect("localhost");
IDatabase rdb = redis.GetDatabase();
/**
* Set hash field/value
*
* Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868
* Result: (integer) 8
*/
HashEntry[] hashData = new HashEntry[] {
new HashEntry("street", "6414 Losee Rd"),
new HashEntry("city", "North Las Vegas"),
new HashEntry("state", "North Carolina"),
new HashEntry("zip", "89086"),
new HashEntry("phone", "(702) 399-9939"),
new HashEntry("country", "United States"),
new HashEntry("latitude", "36.27704"),
new HashEntry("longitude", "-115.115868"),
};
rdb.HashSet("customer:1786:address", hashData);
Console.WriteLine("Command: hset customer:1786:address street \"6414 Losee Rd\" city \"North Las Vegas\" state \"North Carolina\" zip \"89086\" phone \"(702) 399-9939\" country \"United States\" latutude 36.27704 longitude -115.115868");
/**
* Check hash full data
*
* Command: hgetall customer:1786:address
* Result:
* 1) "street"
* 2) "6414 Losee Rd"
* 3) "city"
* 4) "North Las Vegas"
* 5) "state"
* 6) "North Carolina"
* 7) "zip"
* 8) "89086"
* 9) "phone"
* 10) "(702) 399-9939"
* 11) "country"
* 12) "United States"
* 13) "latutude"
* 14) "36.27704"
* 15) "longitude"
* 16) "-115.115868"
*/
HashEntry[] hgetAllResult = rdb.HashGetAll("customer:1786:address");
Console.WriteLine("Command: hgetall customer:1099:address | Result: " + String.Join(", ", hgetAllResult));
/**
* Get all the values of hash
*
* Command: hvals customer:1786:address
* Result:
* 1) "street"
* 2) "city"
* 3) "state"
* 4) "zip"
* 5) "phone"
* 6) "country"
* 7) "latutude"
* 8) "longitude"
*/
RedisValue[] hvalsResult = rdb.HashValues("customer:1786:address");
Console.WriteLine("Command: hvals customer:1099:address | Result: " + String.Join(", ", hvalsResult));
/**
* Use HVALS on a non existing key
* We get (empty list)
*
* Command: hvals nonexistingkey
* Result: (empty array)
*/
hvalsResult = rdb.HashValues("nonexistingkey");
Console.WriteLine("Command: hvals nonexistingkey | Result: " + String.Join(", ", hvalsResult));
/**
* Set string value
*
* Command: set bigboxstr "some stiring value for HVALS command testing"
* Result: OK
*/
bool setResult = rdb.StringSet("bigboxstr", "some stiring value for HVALS command testing");
Console.WriteLine("Command: set bigboxstr \"some stiring value for HVALS command testing\" | Result: " + setResult);
/**
* Try to use HVALS on a hash
* We get an error
*
* Command: hvals bigboxstr
* Result: (error) WRONGTYPE Operation against a key holding the wrong kind of value
*/
try
{
hvalsResult = rdb.HashValues("bigboxstr");
Console.WriteLine("Command: hvals bigboxstr | Result: " + String.Join(", ", hvalsResult));
}
catch (Exception e)
{
Console.WriteLine("Command: hvals bigboxstr | Error: " + e.Message);
}
}
}
}Output:
Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868
Command: hgetall customer:1099:address | Result: street: 6414 Losee Rd, city: North Las Vegas, state: North Carolina, zip: 89086, phone: (702) 399-9939, country: United States, latitude: 36.27704, longitude: -115.115868
Command: hvals customer:1099:address | Result: 6414 Losee Rd, North Las Vegas, North Carolina, 89086, (702) 399-9939, United States, 36.27704, -115.115868
Command: hvals nonexistingkey | Result:
Command: set bigboxstr "some stiring value for HVALS command testing" | Result: True
Command: hvals bigboxstr | Error: WRONGTYPE Operation against a key holding the wrong kind of value Notes
- Use the method “
HashValues” from StackExchange.Redis. - Signatures of the method are-
RedisValue[] HashValues(RedisKey key, CommandFlags flags = CommandFlags.None)
<?php
// Redis HVALS command example in PHP
require 'vendor/autoload.php';
// Connect to Redis
$redisClient = new Predis\Client([
'scheme' => 'tcp',
'host' => 'localhost',
'port' => 6379,
]);
/**
* Set hash field/value
* Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868
* Result: (integer) 8
*/
$commandResult = $redisClient->hset("customer:1786:address",
"street", "6414 Losee Rd",
"city", "North Las Vegas",
"state", "North Carolina",
"zip", "89086",
"phone", "(702) 399-9939",
"country", "United States",
"latitude", "36.27704",
"longitude", "-115.115868",
);
echo "Command: hset customer:1786:address street \"6414 Losee Rd\" city \"North Las Vegas\" state \"North Carolina\" zip \"89086\" phone \"(702) 399-9939\" country \"United States\" latutude 36.27704 longitude -115.115868 | Result: " . $commandResult . "\n";
/**
* Check hash full data
* Command: hgetall customer:1786:address
* Result:
* 1) "street"
* 2) "6414 Losee Rd"
* 3) "city"
* 4) "North Las Vegas"
* 5) "state"
* 6) "North Carolina"
* 7) "zip"
* 8) "89086"
* 9) "phone"
* 10) "(702) 399-9939"
* 11) "country"
* 12) "United States"
* 13) "latutude"
* 14) "36.27704"
* 15) "longitude"
* 16) "-115.115868"
*/
$commandResult = $redisClient->hgetall("customer:1786:address");
echo "Command: hgetall customer:1099:address | Result:";
print_r($commandResult);
/**
* Get all the values of hash
*
* Command: hvals customer:1786:address
* Result:
* 1) "6414 Losee Rd"
* 2) "North Las Vegas"
* 3) "North Carolina"
* 4) "89086"
* 5) "(702) 399-9939"
* 6) "United States"
* 7) "36.27704"
* 8) "-115.115868"
*/
$commandResult = $redisClient->hvals("customer:1786:address");
echo "Command: hvals customer:1099:address | Result:";
print_r($commandResult);
/**
* Use HVALS on a non existing key
* We get (empty list)
*
* Command: hvals nonexistingkey
* Result: (empty array)
*/
$commandResult = $redisClient->hvals("nonexistingkey");
echo "Command: hvals nonexistingkey | Result:";
print_r($commandResult);
/**
* Set string value
* Command: set bigboxstr "some stiring value for HVALS command testing"
* Result: OK
*/
$commandResult = $redisClient->set("bigboxstr", "some stiring value for HVALS command testing");
echo "Command: set bigboxstr \"some stiring value for HVALS command testing\" | Result: " . $commandResult . "\n";
/**
* Try to use HVALS on a hash
* We get an error
* Command: hvals bigboxstr
* Result: (error) WRONGTYPE Operation against a key holding the wrong kind of value
*/
try {
$commandResult = $redisClient->hvals("bigboxstr");
echo "Command: hvals bigboxstr | Result:";
print_r($commandResult);
} catch (\Exception $e) {
echo "Command: hvals bigboxstr | Error: " . $e->getMessage() . "\n";
}
Output:
Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868 | Result: 8
Command: hgetall customer:1099:address | Result:Array
(
[street] => 6414 Losee Rd
[city] => North Las Vegas
[state] => North Carolina
[zip] => 89086
[phone] => (702) 399-9939
[country] => United States
[latitude] => 36.27704
[longitude] => -115.115868
)
Command: hgetall customer:1099:address | Result:Array
(
[0] => 6414 Losee Rd
[1] => North Las Vegas
[2] => North Carolina
[3] => 89086
[4] => (702) 399-9939
[5] => United States
[6] => 36.27704
[7] => -115.115868
)
Command: hvals nonexistingkey | Result:Array
(
)
Command: set bigboxstr "some stiring value for HVALS command testing" | Result: OK
Command: hvals bigboxstr | Error: WRONGTYPE Operation against a key holding the wrong kind of value Notes
- Use the method “
hvals” of predis. - Signature of the method is-
hvals(string $key): array
# Redis HVALS command example in Python
import redis
import time
# Create Redis client
redisClient = redis.Redis(
host="localhost", port=6379, username="default", password="", decode_responses=True
)
# Set hash field/value
# Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868
# Result: (integer) 8
commandResult = redisClient.hset(
"customer:1786:address",
mapping={
"street": "6414 Losee Rd",
"city": "North Las Vegas",
"state": "North Carolina",
"zip": "89086",
"phone": "(702) 399-9939",
"country": "United States",
"latitude": "36.27704",
"longitude": "-115.115868",
},
)
print(
'Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868 | Result: {}'.format(
commandResult
)
)
# Check hash full data
# Command: hgetall customer:1786:address
# Result:
# 1) "street"
# 2) "6414 Losee Rd"
# 3) "city"
# 4) "North Las Vegas"
# 5) "state"
# 6) "North Carolina"
# 7) "zip"
# 8) "89086"
# 9) "phone"
# 10) "(702) 399-9939"
# 11) "country"
# 12) "United States"
# 13) "latutude"
# 14) "36.27704"
# 15) "longitude"
# 16) "-115.115868"
commandResult = redisClient.hgetall("customer:1786:address")
print("Command: hgetall customer:1099:address | Result: {}".format(commandResult))
# Get all the values of hash
# Command: hvals customer:1786:address
# Result:
# 1) "6414 Losee Rd"
# 2) "North Las Vegas"
# 3) "North Carolina"
# 4) "89086"
# 5) "(702) 399-9939"
# 6) "United States"
# 7) "36.27704"
# 8) "-115.115868"
commandResult = redisClient.hvals("customer:1786:address")
print("Command: hgetall customer:1099:address | Result: {}".format(commandResult))
# Use HVALS on a non existing key
# We get (empty list)
# Command: hvals nonexistingkey
# Result: (empty array)
commandResult = redisClient.hvals("nonexistingkey")
print("Command: hvals nonexistingkey | Result: {}".format(commandResult))
# Set string value
# Command: set bigboxstr "some stiring value for HVALS command testing"
# Result: OK
commandResult = redisClient.set(
"bigboxstr", "some stiring value for HVALS command testing"
)
print(
'Command: set bigboxstr "some stiring value for HVALS command testing" | Result: {}'.format(
commandResult
)
)
# Try to use HVALS on a hash
# We get an error
# Command: hvals bigboxstr
# Result: (error) WRONGTYPE Operation against a key holding the wrong kind of value
try:
commandResult = redisClient.hvals("bigboxstr")
print("Command: hvals bigboxstr | Result: {}".format(commandResult))
except Exception as error:
print("Command: hvals bigboxstr | Error: ", error)
Output:
Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868 | Result: 8
Command: hgetall customer:1099:address | Result: {'street': '6414 Losee Rd', 'city': 'North Las Vegas', 'state': 'North Carolina', 'zip': '89086', 'phone': '(702) 399-9939', 'country': 'United States', 'latitude': '36.27704', 'longitude': '-115.115868'}
Command: hgetall customer:1099:address | Result: ['6414 Losee Rd', 'North Las Vegas', 'North Carolina', '89086', '(702) 399-9939', 'United States', '36.27704', '-115.115868']
Command: hvals nonexistingkey | Result: []
Command: set bigboxstr "some stiring value for HVALS command testing" | Result: True
Command: hvals bigboxstr | Error: WRONGTYPE Operation against a key holding the wrong kind of value Notes
- Use method “
hget” from redis-py. - Signature of the method is –
def hget(self, name: str, key: str)
# Redis HVALS command example in Ruby
require 'redis'
redis = Redis.new(host: "localhost", port: 6379)
# Set hash field/value
# Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868
# Result: (integer) 8
commandResult = redis.hset("customer:1786:address", {
"street" => "6414 Losee Rd",
"city" => "North Las Vegas",
"state" => "North Carolina",
"zip" => "89086",
"phone" => "(702) 399-9939",
"country" => "United States",
"latitude" => "36.27704",
"longitude" => "-115.115868",
},
)
print("Command: hset customer:1786:address street \"6414 Losee Rd\" city \"North Las Vegas\" state \"North Carolina\" zip \"89086\" phone \"(702) 399-9939\" country \"United States\" latutude 36.27704 longitude -115.115868 | Result: ", commandResult, "\n")
# Check hash full data
# Command: hgetall customer:1786:address
# Result:
# 1) "street"
# 2) "6414 Losee Rd"
# 3) "city"
# 4) "North Las Vegas"
# 5) "state"
# 6) "North Carolina"
# 7) "zip"
# 8) "89086"
# 9) "phone"
# 10) "(702) 399-9939"
# 11) "country"
# 12) "United States"
# 13) "latutude"
# 14) "36.27704"
# 15) "longitude"
# 16) "-115.115868"
commandResult = redis.hgetall("customer:1786:address")
print("Command: hgetall customer:1099:address | Result: ", commandResult, "\n")
# Get all the values of hash
# Command: hvals customer:1786:address
# Result:
# 1) "6414 Losee Rd"
# 2) "North Las Vegas"
# 3) "North Carolina"
# 4) "89086"
# 5) "(702) 399-9939"
# 6) "United States"
# 7) "36.27704"
# 8) "-115.115868"
commandResult = redis.hvals("customer:1786:address")
print("Command: hvals customer:1099:address | Result: ", commandResult, "\n")
# Use HVALS on a non existing key
# We get (empty list)
# Command: hvals nonexistingkey
# Result: (empty array)
commandResult = redis.hvals("nonexistingkey")
print("Command: hvals nonexistingkey | Result: ", commandResult, "\n")
# Set string value
# Command: set bigboxstr "some stiring value for HVALS command testing"
# Result: OK
commandResult = redis.set(
"bigboxstr", "some stiring value for HVALS command testing"
)
print("Command: set bigboxstr \"some stiring value for HVALS command testing\" | Result: ", commandResult, "\n")
# Try to use HVALS on a hash
# We get an error
# Command: hvals bigboxstr
# Result: (error) WRONGTYPE Operation against a key holding the wrong kind of value
begin
commandResult = redis.hvals("bigboxstr")
print("Command: hvals bigboxstr | Result: ", commandResult, "\n")
rescue => e
print("Command: hvals bigboxstr | Error: ", e, "\n")
end
Output:
Command: hset customer:1786:address street "6414 Losee Rd" city "North Las Vegas" state "North Carolina" zip "89086" phone "(702) 399-9939" country "United States" latutude 36.27704 longitude -115.115868 | Result: 8
Command: hgetall customer:1099:address | Result: {"street"=>"6414 Losee Rd", "city"=>"North Las Vegas", "state"=>"North Carolina", "zip"=>"89086", "phone"=>"(702) 399-9939", "country"=>"United States", "latitude"=>"36.27704", "longitude"=>"-115.115868"}
Command: hvals customer:1099:address | Result: ["6414 Losee Rd", "North Las Vegas", "North Carolina", "89086", "(702) 399-9939", "United States", "36.27704", "-115.115868"]
Command: hvals nonexistingkey | Result: []
Command: set bigboxstr "some stiring value for HVALS command testing" | Result: OK
Command: hvals bigboxstr | Error: WRONGTYPE Operation against a key holding the wrong kind of value Notes
- Use method “
hvals” from the redis-rb. - Signature of the method is-
# @param [String] key
# @return [Array<String>]
def hvals(key)
Source Code
Use the following links to get the source code used in this article-
| Source Code of | Source Code Link |
|---|---|
| Command Examples |  GitHub |
| Golang Implementation | GitHub |
| NodeJS Implementation | GitHub |
| Java Implementation | GitHub |
| C# Implementation | GitHub |
| PHP Implementation | GitHub |
| Python Implementation | GitHub |
| Ruby Implementation | GitHub |
Related Commands
| Command | Details |
|---|---|
| HSETNX | Command Details |
| HMGET | Command Details |
| HGETALL | Command Details |
| HSET | Command Details |
