MySQL - Want to Minus two SUM() values from two SELECT statements - mysql

Question

I want to be able to grab the two values that I have generated in SUM() from two SELECT queries and minus these values in order to get the result (OutstandingFunds).
These are my two SELECT queries:
Statement (1):
SELECT SUM(Cf.Amount) AS ClearedFunds
FROM (
SELECT Amount FROM PAYMENT1 WHERE `Status` = "Cleared"
UNION ALL
SELECT Amount FROM PAYMENT2 WHERE `Status` = "Cleared"
UNION ALL
SELECT Amount FROM PAYMENT3 WHERE `Status` = "Cleared") AS Cf;
Statement (2):
SELECT SUM(Price) AS TotalSales
FROM PROPERTY
WHERE Status = “Sold”;
Thank you for your time

Answer 1

If you don't need to show the separate subtotal for total sales and cleared funds, you can do it like this:
SELECT SUM(Total.`Price`) AS ClearedFunds
FROM (
SELECT `Price` FROM PROPERTY WHERE `Status` = 'Sold'
UNION ALL
SELECT (`Amount` * -1) AS `Price` FROM PAYMENT1 WHERE `Status` = 'Cleared'
UNION ALL
SELECT (`Amount` * -1) AS `Price` FROM PAYMENT2 WHERE `Status` = 'Cleared'
UNION ALL
SELECT (`Amount` * -1) AS `Price` FROM PAYMENT3 WHERE `Status` = 'Cleared'
) AS Total;
I am assuming you are wanting to subtract cleared funds from total sales here.

Answer 2

You were almost there... here's the working SQL:
SELECT (SELECT SUM(Cf.Amount) AS ClearedFunds
FROM (
SELECT Amount FROM PAYMENT1 WHERE `Status` = "Cleared"
UNION ALL
SELECT Amount FROM PAYMENT2 WHERE `Status` = "Cleared"
UNION ALL
SELECT Amount FROM PAYMENT3 WHERE `Status` = "Cleared") as Cf)
- (SELECT SUM(Price) AS TotalSales
FROM PROPERTY
WHERE Status = "Sold") as Result;
Here's the SQL Fiddle so that you can play with test data: http://sqlfiddle.com/#!2/18677/11

Answer 3

You can use SELECT ... INTO ..., in your case:
SELECT SUM(Cf.Amount) AS ClearedFunds
FROM (
SELECT Amount FROM PAYMENT1 WHERE `Status` = "Cleared"
UNION ALL
SELECT Amount FROM PAYMENT2 WHERE `Status` = "Cleared"
UNION ALL
SELECT Amount FROM PAYMENT3 WHERE `Status` = "Cleared") INTO #cf;
SELECT SUM(Price) AS TotalSales
FROM PROPERTY
WHERE Status = “Sold” INTO #ts;
Then you can substract or use them in any other query, like this:
SELECT #ts - #cf;

Answer 4

Are you looking for this?
SELECT C.ClearedFunds - P.TotalSales
FROM (
SELECT SUM(Cf.Amount) AS ClearedFunds
FROM (
SELECT Amount FROM PAYMENT1 WHERE `Status` = "Cleared"
UNION ALL
SELECT Amount FROM PAYMENT2 WHERE `Status` = "Cleared"
UNION ALL
SELECT Amount FROM PAYMENT3 WHERE `Status` = "Cleared") AS Cf) C,
(SELECT SUM(Price) AS TotalSales
FROM PROPERTY
WHERE Status = “Sold”) P
;