Mega Code Archive
NOT changes the logical value of the corresponding condition
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1>
2> CREATE TABLE employee (emp_no INTEGER NOT NULL,
3> emp_fname CHAR(20) NOT NULL,
4> emp_lname CHAR(20) NOT NULL,
5> dept_no CHAR(4) NULL)
6>
7> insert into employee values(1, 'Matthew', 'Smith', 'd3')
8> insert into employee values(2, 'Ann', 'Jones', 'd3')
9> insert into employee values(3, 'John', 'Barrimore','d1')
10> insert into employee values(4, 'James', 'James', 'd2')
11> insert into employee values(5, 'Elsa', 'Bertoni', 'd2')
12> insert into employee values(6, 'Elke', 'Hansel', 'd2')
13> insert into employee values(7, 'Sybill', 'Moser', 'd1')
14>
15> select * from employee
16> GO
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
emp_no emp_fname emp_lname dept_no
----------- -------------------- -------------------- -------
1 Matthew Smith d3
2 Ann Jones d3
3 John Barrimore d1
4 James James d2
5 Elsa Bertoni d2
6 Elke Hansel d2
7 Sybill Moser d1
(7 rows affected)
1>
2>
3> -- The third Boolean operator, NOT, changes the logical value of the
corresponding condition.
4>
5> SELECT emp_no, emp_lname FROM employee WHERE NOT dept_no = 'd2'
6> GO
emp_no emp_lname
----------- --------------------
1 Smith
2 Jones
3 Barrimore
7 Moser
(4 rows affected)
1>
2> drop table employee
3> GO
1>
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