How would I go about loading all data from a DataStore?

Help and Feedback Scripting Support
#1

Issue Summary

In my game, every player that joins gets a leaderstat. That leaderstat is a JSONEncoded string of an array. Every array is custom to that player, so it could change at any time, but in the end, you get a JSONEncoded string value. (I have all of that set up, + data saving).

What I am trying to do is load all of the string values when called upon, despite whether or not the player is in-game or not. I need to be able to print out all of the strings inside of that datastore that the players received when they played the game.

Tried Solutions

I did some research and found that OrderedDataStores was the way to do this. Unfortunately, I found that you can only store numerical values inside an ordered datastore, so that got me back to square one.

Is there anyway to loop through a DataStore, if not, how would I go about acvieving my goal?

2 Likes
#2

You can do regular DataStore and at the same time you could pull the saved data at any given time as long as you have the key.

1 Like
#3

How can I retrieve the key if the player is not in the game?

#4

Let me see how you are saving the data.

#5

For example if I’m saving the data in the following way:

playerData:SetAsync("PlayerData" .. Player.userId, DataToSave)

Then I can retrieve it from any server at any time like the following:

local data = playerData:GetAsync("PlayerData" .. id) -- id being the user id of the player you are retrieving the data from
#6

Yeah I understand that part and have up to that, however my issue is that I don’t want to load the data of one specific player, but rather every player that has played the game.

For instance, my goal is to somehow get a list of all keys within a specific datastore, and then do stuff with that data, for example a Global Leaderboard.

But it seems this isn’t as easy as I think it is and I will have to find some sort of workaround to be able to print out data of all keys in a datastore.

#7

Ahhhh. You should not load the data of every player.
Fact: You can not, even though you may if the game only has a few players. But as the number of players increases, the chances of getting all the data decreases. Therefore it is inefficient. So if you want to do a global leaderboard, heres an example:

local dataStoreService = game:GetService("DataStoreService")
local dataStore = dataStoreService:GetOrderedDataStore("MostWins")


function ShowFrontPage(data)
	for i,v in pairs(data) do
		userid = v[1]
		value = v[2]
		-- You can update the UI leaderboard with this information.
	end
end

while true do
	for i,plr in pairs(game:GetService("Players"):GetPlayers()) do
		pcall(function()
			dataStore:UpdateAsync(plr.UserId,function(oldVal)
				return plr.leaderstats.Wins.Value -- Change with the new value
			end)
		end)
	end

    local smallestFirst = false--false = 2 before 1, true = 1 before 2
    local numberToShow = 25--Any number between 1-100, how many will be shown
    local minValue = 1--Any numbers lower than this will be excluded
    local maxValue = 10e30--(10^30), any numbers higher than this will be excluded
    local pages = dataStore:GetSortedAsync(smallestFirst, numberToShow, minValue, maxValue)
	
    local top = pages:GetCurrentPage()
	
    local data = {}--Store new data

    for a,b in ipairs(top) do--Loop through data
		local userid = b.key--User id
		local wins = b.value
        table.insert(data, {userid, wins})
    end



    wait(120)
end
1 Like
#8

Thank you, I think I can figure out a way to make this work with string values and another leaderstat in my game.

I appreciate you taking the time to help me, thanks again!

1 Like