Server freezing when running SQL queries
Hello, Why when i using sql my server freeze?

void OnCollectiblePickup(Item item, BasePlayer player)
        {
           if (player != null) {
				if(item.info.shortname == "wood" || item.info.shortname == "sulfur.ore" || item.info.shortname == "stones"){
					QueryUpdate(player.UserIDString, "Protect:( mydb SET `"+item.info.shortname+"` = `"+item.info.shortname+"`+"+item.amount+"  WHERE `uid` = "+player.UserIDString+";");			
				}
		   }
        }​

void QueryUpdate(string uid, string sqlQuery)
        {
            if (sqlQuery.Length > 0 && uid.Length > 0) {
				sqlLibrary.Update(Oxide.Core.Database.Sql.Builder.Append(sqlQuery), sqlConnection, rowsAffected =>{});
				sqlLibrary.CloseDb(sqlConnection);
			}
        }

or 

void OnUserConnected(IPlayer player)
        {
			var uid = player.Id;
			if(uid != null) {
				sqlLibrary.Query(Oxide.Core.Database.Sql.Builder.Append("Protect:( `uid` FROM rust_stats WHERE `steamid`="+uid+" LIMIT 1"), sqlConnection, list =>
				{
					if (list == null || list.Count == 0) {
						sqlLibrary.Insert(Oxide.Core.Database.Sql.Builder.Append("Protect:( rust_stats (`uid`) VALUES (@0);", uid), sqlConnection, rowsAffected =>{sqlLibrary.CloseDb(sqlConnection);});
						InitPlayerData(player);						
					} else {
						sqlLibrary.CloseDb(sqlConnection);
						InitPlayerData(player);						
					}
				});
			}
			return;
        }

void OnUserDisconnected(IPlayer player) {
//QueryUpdate
}

private void Unload()
        {
			 foreach (var player in players.Connected) {
				if(player != null) {
					OnUserDisconnected(player);	
					Puts("SQL Saved Stats for: "+player.Name);
				}
			} 
        }

void OnServerSave()
		{	
			saves++;
			Puts("Count saves: "+saves);
			 if(saves > 15){
				foreach (var player in players.Connected) {
					OnUserDisconnected(player);
					Puts("AUTOUPDATE SQL");
				}
				saves = 0;
			} 
		}
Maybe I'm doing something wrong? Everything works but with frequent requests, server freezes.
where Protect:( this SELECT and UPDATE

Merged post

Hi, Hello, qq epta. 
Is there someone alive?
Unfortunately there are few that here that are experienced with the SQL implementations. As far as I know, they should run in the background, so shouldn't cause your server to lock up.
so bad :(
I think so too, but with frequent access to the database, the server hangs (