Authors CurseForge

tbl = {
    ["Test"] = {
                   ["Value 1"] = "Yes"
                   }
}

Quote from OrionShock

If your looking to put the key values togeather in one string, then this should work :

local out = ""
for _, v in pairs(tbl) do
    for i, _ in pairs(v) do
        out = out..i
    end
end
print(out)

tbl = {
    ["Test"] = {
                   ["Value 1"] = "Yes",
                   ["Value 2"] = "No",
                   ["Value 3"] = "Yes&No",
                   ...
                   }
}

for _, v in pairs(tbl) do
    for i, z in pairs(v) do
         print(i)  -- = Value X
         print(z) -- = Yes, yesno, ..
end
end

Quote from Xinhuan

I think your definition of "concat" isn't what the rest of us think it is.

"Concat" in Lua means to take several strings and combine them into a single larger string, and the concatenation operator in Lua is 2 dots: ..

Your question is extremely vague, you did not mention whether you want to concat string keys, string values or keys and values or whatever, nor what you want your result to be.

Quote from OrionShock

For Google Translate / ESL it was fairly clear IMO :)

Quote from gamemaster128

ESL = English as a Second Language

OrionShock was implying that your English is pretty good for it not being your first language.

Quote from vabatta

Uh, ops, sorry OrionShock :).
I ididn't know the meaning of ESL.