NOT changes the logical value of the corresponding condition : NOT « Select Query « SQL Server / T-SQL

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SQL Server / T-SQL » Select Query » NOT 
NOT changes the logical value of the corresponding condition


1>
2CREATE TABLE employee  (emp_no    INTEGER NOT NULL,
3>                         emp_fname CHAR(20NOT NULL,
4>                         emp_lname CHAR(20NOT NULL,
5>                         dept_no   CHAR(4NULL)
6>
7insert into employee values(1,  'Matthew', 'Smith',    'd3')
8insert into employee values(2,  'Ann',     'Jones',    'd3')
9insert into employee values(3,  'John',    'Barrimore','d1')
10insert into employee values(4,  'James',   'James',    'd2')
11insert into employee values(5,  'Elsa',    'Bertoni',  'd2')
12insert into employee values(6,  'Elke',    'Hansel',   'd2')
13insert into employee values(7,  'Sybill',  'Moser',    'd1')
14>
15select from employee
16> GO

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)
emp_no      emp_fname            emp_lname            dept_no
----------- -------------------- -------------------- -------
          Matthew              Smith                d3
          Ann                  Jones                d3
          John                 Barrimore            d1
          James                James                d2
          Elsa                 Bertoni              d2
          Elke                 Hansel               d2
          Sybill               Moser                d1

(rows affected)
1>
2>
3> -- The third Boolean operator, NOT, changes the logical value of the 
corresponding condition.
4>
5SELECT emp_no, emp_lname FROM employee WHERE NOT dept_no = 'd2'
6> GO
emp_no      emp_lname
----------- --------------------
          Smith
          Jones
          Barrimore
          Moser

(rows affected)
1>
2> drop table employee
3> GO
1>
           
       
Related examples in the same category
1. NOT Operator Demo
2. Use NOT operator in where clause
3. NOT 'between...and'
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