Why is mysql query not working in nodejs?

Question

MySQL

Such a query does not work (no errors occur, but nothing changes in the database):

db.query("UPDATE Statistics SET online='" + Online + "', maximumOnline='" + MaximumOnline + "' WHERE date='" + new Date(CurrentStatisticsTime).toISOString() + "'");

Although queries like this work:

db.query("INSERT INTO Statistics (date, online, maximumOnline) VALUE ('" + new Date(CurrentStatisticsTime).toISOString() + "','" + Online + "','" + MaximumOnline + "')");

db.query("SELECT * FROM Statistics WHERE date='" + new Date(CurrentStatisticsTime).toISOString() + "'");

Answer 1

Because javascript is shit invented by anonists, pass to the anonymous function if (err) throw err; and maybe if you're lucky you'll see what's wrong, although not a fact.