根据另外两列为一列选择MAX值，其中一列具有MAX值

Question

I have a table data as below, that comes from different tables. I want to take the maximum value from 4th column only if 3rd column has value 'debt' AND 1st column(DATE) has maximum value. The final value is based on MAX(DATE) rather than MAX(PRICE) . so in simple language it comes this way

IF(MAX(DATE) && TYPE = 'debt'){
   MAX(PRICE);
}

Here is the image view of data available.

and the current query I am using is below

SELECT
    MAX(CASE WHEN PAYMENTS.PAYMENT = 'debt' AND RECEIPTS.DATENEW THEN PAYMENTS.TOTAL END) AS TAKENDEBT,
    (CASE WHEN PAYMENTS.PAYMENT = 'debtpaid' THEN PAYMENTS.TOTAL END) AS GIVENDEBT,
    MAX(CASE WHEN PAYMENTS.PAYMENT = 'debt' THEN RECEIPTS.DATENEW END) AS TAKENDATE,
    MAX(CASE WHEN PAYMENTS.PAYMENT = 'debtpaid' THEN RECEIPTS.DATENEW END) AS GIVENDATE,
    (MAX(CASE WHEN PAYMENTS.PAYMENT = 'debt' THEN PAYMENTS.TOTAL END) + SUM((CASE WHEN PAYMENTS.PAYMENT = 'debtpaid' THEN PAYMENTS.TOTAL END))) AS DUE,        
    CASE WHEN PAYMENTS.PAYMENT = 'debt' OR PAYMENTS.PAYMENT = 'debtpaid' THEN CUSTOMERS.NAME END AS CUSTOMER 
FROM RECEIPTS
    INNER JOIN TICKETS ON RECEIPTS.ID = TICKETS.ID
    INNER JOIN PAYMENTS ON RECEIPTS.ID = PAYMENTS.RECEIPT
    INNER JOIN CUSTOMERS ON TICKETS.CUSTOMER = CUSTOMERS.ID
WHERE
    (PAYMENTS.PAYMENT = 'debt'
    OR PAYMENTS.PAYMENT = 'debtpaid')
GROUP BY CUSTOMER
ORDER BY DUE DESC

which gives me the output as shown below with red circle, while I need the value in green circle. That means it's getting value based on MAX(PRICE) while I need on based of MAX(DATE) then MAX(PRICE) because there can be multiple values for same date.

AND PLEASE DON'T ASK ME TO PUT DATA IN FIDDLE THING, ITS A MESS OF DATABASE I MANAGED TO HAVE THIS QUERY AND NOW WANT TO BE ON THE SAME STRUCTURE. THANKS

Answer 1

Try a solution similar to:

SELECT date, max(price) FROM yourTable 
  WHERE payment='debt' AND date = ( SELECT max(date) From yourTable)
  GROUP BY date

or

SELECT date ,max(price) FROM yourTable
  WHERE payment='debt'
  GROUP BY date
  ORDER BY date DESC
  LIMIT 1