SQL Server/T-SQL Tutorial/Query/arithmetic operator — различия между версиями
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Текущая версия на 10:23, 26 мая 2010
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