SQL Server/T-SQL Tutorial/Query/arithmetic operator

The arithmetic operators in order of precedence

*  Multiplication
/  Division
%  Modulo (Remainder)
+  Addition
-  Subtraction
A SELECT statement that calculates the balance due
13> create table Billings (
14>     BankerID           INTEGER,
15>     BillingNumber      INTEGER,
16>     BillingDate        datetime,
17>     BillingTotal       INTEGER,
18>     TermsID            INTEGER,
19>     BillingDueDate     datetime ,
20>     PaymentTotal       INTEGER,
21>     CreditTotal        INTEGER
22>
23> );
24> GO
1>
2> INSERT INTO Billings VALUES (1, 1, "2005-01-22", 165, 1,"2005-04-22",123,321);
3> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (2, 2, "2001-02-21", 165, 1,"2002-02-22",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (3, 3, "2003-05-02", 165, 1,"2005-04-12",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (4, 4, "1999-03-12", 165, 1,"2005-04-18",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (5, 5, "2000-04-23", 165, 1,"2005-04-17",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (6, 6, "2001-06-14", 165, 1,"2005-04-18",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (7, 7, "2002-07-15", 165, 1,"2005-04-19",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (8, 8, "2003-08-16", 165, 1,"2005-04-20",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (9, 9, "2004-09-17", 165, 1,"2005-04-21",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (0, 0, "2005-10-18", 165, 1,"2005-04-22",123,321);
2> GO
(1 rows affected)
1>
2> SELECT BillingTotal, PaymentTotal, CreditTotal,
3>     BillingTotal - PaymentTotal - CreditTotal AS BalanceDue
4> FROM Billings
5> GO
BillingTotal PaymentTotal CreditTotal BalanceDue
------------ ------------ ----------- -----------
         165          123         321        -279
         165          123         321        -279
         165          123         321        -279
         165          123         321        -279
         165          123         321        -279
         165          123         321        -279
         165          123         321        -279
         165          123         321        -279
         165          123         321        -279
         165          123         321        -279
(10 rows affected)
1>
2> drop table Billings;
3> GO