Aattempt to concatenate a unsigned long long value

[ToShuk Marusenko]

local function OnChat(event, player)

local result = CharDBQuery("SELECT skill FROM character_skills WHERE skill = 171 AND guid = "..player:GetGUID())
       if(result) then
            repeat
                skill = result:GetUInt32(0);
            until not result:NextRow()    
        end

    print (guid)
        
print(skill)
end        

RegisterPlayerEvent(18, OnChat) 

    Eluna: lua_scripts/prod_fix.lua:3: attempt to concatenate a unsigned long long value

 

i have this error, but why?? if i write "3" this code i normal work

[Rochet2]

player:GetGUID() does not return a number, it returns an object. To concatenate it to a string you should use tostring(player:GetGUID())

Also using player:GetGUID() is wrong. You should be using player:GetGUIDLow() for any queries into DB with player guid.