That would be more forgivable. This is: SELECT * FROM payments where paymentID = 1 SELECT * FROM payments where paymentID = 2 SELECT * FROM payments whe

That would be more forgivable. This is: SELECT * FROM payments where paymentID = 1 SELECT * FROM payments where paymentID = 2 SELECT * FROM payments where paymentID = 3 ... SELECT * FROM payments where paymentID = 14986 Each of those in its own API request over the wire, then sum them on the client.