Deleting sales based on the average quantity of sales. : Delete « Insert Delete Update « SQL Server / T-SQL Tutorial






  1. SQL Server / T-SQL Tutorial
  2. Insert Delete Update
  3. Delete
3>
4> CREATE TABLE sales(
5>    stor_id        char(4)           NOT NULL,
6>    ord_num        varchar(20)       NOT NULL,
7>    ord_date       datetime          NOT NULL,
8>    qty            smallint          NOT NULL,
9>    payterms       varchar(12)       NOT NULL,
10>    title_id       varchar(80)
11> )
12> 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>      DELETE    sales
3>      WHERE     qty <
4>                (SELECT AVG(qty) from sales)
5> GO

(4 rows affected)
1> drop table sales;
2> GO
1>








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.