NOT EXISTS function with table join : Table Join « Table Joins « SQL Server / T-SQL

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SQL Server / T-SQL » Table Joins » Table Join 
NOT EXISTS function with table join


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>
3CREATE TABLE department(dept_no   CHAR(4NOT NULL,
4>                         dept_name CHAR(25NOT NULL,
5>                         location  CHAR(30NULL)
6>
7insert into department values ('d1', 'developer',   'Dallas')
8insert into department values ('d2', 'tester',      'Seattle')
9insert into department values ('d3', 'marketing',  'Dallas')
10>
11select from department
12> GO

(rows affected)

(rows affected)

(rows affected)
dept_no dept_name                 location
------- ------------------------- ------------------------------
d1      developer                 Dallas
d2      tester                    Seattle
d3      marketing                 Dallas

(rows affected)
1>
2> -- NOT EXISTS function.
3>
4SELECT emp_lname FROM employee WHERE NOT EXISTS
5>        (SELECT FROM department WHERE employee.dept_no = department.dept_no
6>          AND location = 'Seattle')
7>
8> drop table department
9> drop table employee
10> GO
emp_lname
--------------------
Smith
Jones
Barrimore
Moser

(rows affected)
1>
2>
           
       
Related examples in the same category
1.Joining a Table with Itself
2.SQL Server join syntax
3.SET SHOWPLAN_TEXT ON for a table join
4.Joins are advantageous over subqueries if the SELECT list in a query contains columns from more than one table
5.Use Count function in a left join
6.Table join with data returned from function
7.Select columns from all tables
8.Column alias in table join
9.Using TOP in table join
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