SELECT select_list
FROM table_source
[WHERE search_condition]
[GROUP BY group_by_list]
[HAVING search_condition]
[ORDER BY order_by_list]
A summary query that calculates the average Billing amount by Banker
15>
16>
17> create table Billings (
18> BankerID INTEGER,
19> BillingNumber INTEGER,
20> BillingDate datetime,
21> BillingTotal INTEGER,
22> TermsID INTEGER,
23> BillingDueDate datetime ,
24> PaymentTotal INTEGER,
25> CreditTotal INTEGER
26>
27> );
28> 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>
3>
4> SELECT BankerID, AVG(BillingTotal) AS AverageBillingAmount
5> FROM Billings
6> GROUP BY BankerID
7> HAVING AVG(BillingTotal) > 2000
8> ORDER BY AverageBillingAmount DESC
9> GO
BankerID AverageBillingAmount
----------- --------------------
(0 rows affected)
1>
2>
3> drop table Billings;
4> GO