Deleting sales for a publisher by name. : Delete « Insert Delete Update « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » Insert Delete Update » Delete 
2. 4. 5. Deleting sales for a publisher by name.
6>
7>
8CREATE TABLE publishers(
9>    pub_id         char(4)           NOT NULL,
10>    pub_name       varchar(40)           NULL,
11>    city           varchar(20)           NULL,
12>    state          char(2)               NULL,
13>    country        varchar(30)           NULL DEFAULT('USA')
14)
15> GO
1>
2>
3insert publishers values('1''Publisher A', 'Vancouver',  'MA', 'USA')
4insert publishers values('2''Publisher B', 'Washington', 'DC', 'USA')
5insert publishers values('3''Publisher C', 'Berkeley',   'CA', 'USA')
6insert publishers values('4''Publisher D', 'New York',   'NY', 'USA')
7insert publishers values('5''Publisher E', 'Chicago',    'IL', 'USA')
8insert publishers values('6''Publisher F', 'Dallas',     'TX', 'USA')
9insert publishers values('7''Publisher G', 'Vancouver',  'BC', 'Canada')
10insert publishers values('8''Publisher H', 'Paris',      NULL, 'France')
11> GO

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)
1CREATE TABLE titles(
2>    title_id       varchar(20),
3>    title          varchar(80)       NOT NULL,
4>    type           char(12)          NOT NULL,
5>    pub_id         char(4)               NULL,
6>    price          money                 NULL,
7>    advance        money                 NULL,
8>    royalty        int                   NULL,
9>    ytd_sales      int                   NULL,
10>    notes          varchar(200)          NULL,
11>    pubdate        datetime          NOT NULL
12)
13> GO
1>
2CREATE TABLE sales(
3>    stor_id        char(4)           NOT NULL,
4>    ord_num        varchar(20)       NOT NULL,
5>    ord_date       datetime          NOT NULL,
6>    qty            smallint          NOT NULL,
7>    payterms       varchar(12)       NOT NULL,
8>    title_id       varchar(80)
9)
10> GO
1insert sales values('1''QA7442.3', '09/13/94', 75'ON Billing','1')
2insert sales values('2''D4482',    '09/14/94', 10'Ne60',    '1')
3insert sales values('3''N914008',  '09/14/94', 20'Ne30',    '2')
4insert sales values('4''N914014',  '09/14/94', 25'Ne30',    '3')
5insert sales values('5''423LL922', '09/14/94', 15'ON Billing','3')
6insert sales values('6''423LL930', '09/14/94', 10'ON Billing','2')
7> GO

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)
1>
2DELETE    sales
3>      FROM      sales
4>                JOIN titles t ON sales.title_id = t.title_id
5>                JOIN publishers p ON t.pub_id = p.pub_id
6>      WHERE     p.pub_name = 'Publisher A'
7> GO

(rows affected)
1>
2> drop table sales;
3> drop table publishers;
4> drop table titles;
5> GO
2. 4. Delete
2. 4. 1. The syntax of the DELETE statement
2. 4. 2. A DELETE statement with where clause
2. 4. 3. A DELETE statement that removes all the rows from the BillingCopy table
2. 4. 4. A DELETE statement that removes a single row from the BillingCopy table
2. 4. 5. Deleting sales for a publisher by name.
2. 4. 6. A DELETE statement with subquery
2. 4. 7. Delete with table join
2. 4. 8. A DELETE statement with NOT IN and subquery
2. 4. 9. Deleting sales based on the average quantity of sales.
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