Mega Code Archive
Updating using two subqueries
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5> CREATE TABLE sales(
6> stor_id char(4) NOT NULL,
7> ord_num varchar(20) NOT NULL,
8> ord_date datetime NOT NULL,
9> qty smallint NOT NULL,
10> payterms varchar(12) NOT NULL,
11> title_id varchar(80)
12> )
13> GO
1> insert sales values('1', 'QA7442.3', '09/13/94', 75, 'ON Billing','1')
2> insert sales values('2', 'D4482', '09/14/94', 10, 'Net 60', '1')
3> insert sales values('3', 'N914008', '09/14/94', 20, 'Net 30', '2')
4> insert sales values('4', 'N914014', '09/14/94', 25, 'Net 30', '3')
5> insert sales values('5', '423LL922', '09/14/94', 15, 'ON Billing','3')
6> insert sales values('6', '423LL930', '09/14/94', 10, 'ON Billing','2')
7> GO
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
1>
2>
3> CREATE TABLE titleauthor(
4> au_id varchar(20),
5> title_id varchar(20),
6> au_ord tinyint NULL,
7> royaltyper int NULL
8> )
9> GO
1>
2> insert titleauthor values('1', '2', 1, 60)
3> insert titleauthor values('2', '3', 1, 100)
4> insert titleauthor values('3', '4', 1, 100)
5> insert titleauthor values('4', '5', 1, 100)
6> insert titleauthor values('5', '6', 1, 100)
7> insert titleauthor values('6', '7', 2, 40)
8> insert titleauthor values('7', '8', 1, 100)
9> insert titleauthor values('8', '9', 1, 100)
10> GO
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
1> UPDATE titleauthor
2> SET royaltyper = 1.1 * (SELECT SUM(qty)
3> FROM sales
4> WHERE sales.title_id = titleauthor.title_id)
5> WHERE title_id IN
6> (SELECT title_id
7> FROM sales
8> GROUP BY title_id
9> HAVING sum(qty) >=30)
10> GO
(2 rows affected)
1>
2> drop table sales;
3> drop table titleauthor;
4> GO
1>
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