I have one statement but it take a really long time to calculate. I need a fast sql statement. The following statement takes about 25 seconds. I need a very quick statement (under 1 sec) I have about 10000 records in each table.
select TableA.ShipID, sum(TotalBilledSQL.TotalBilled) AS `AmountPaid`,sum(TotalChargeSQL.TotalCharges) AS `OrigAmount`
,(sum(TotalChargeSQL.TotalCharges)- sum(TotalBilledSQL.TotalBilled)) AS `Balance` from ((TableA left join (SELECT TableB.ShipID, sum(TableB.ChargeAmount) AS TotalCharges FROM TableB GROUP BY TableB.ShipID) AS TotalChargeSQL on((TableA.ShipID = TotalChargeSQL.ShipID))) left join (SELECT TableB.ShipID, sum(TableC.Amount) as TotalBilled FROM TableC RIGHT JOIN TableB ON TableB.ChargeID = TableC.ChargeID GROUP BY TableB.shipid) as TotalBilledSQL on((TableA.shipid = TotalBilledSQL.ShipID))) group by TableA.ShipID