Mega Code Archive
Subqueries and ANY operator
<![CDATA[
29>
30> CREATE TABLE employee (emp_no INTEGER NOT NULL,
31> emp_fname CHAR(20) NOT NULL,
32> emp_lname CHAR(20) NOT NULL,
33> dept_no CHAR(4) NULL)
34>
35> insert into employee values(1, 'Matthew', 'Smith', 'd3')
36> insert into employee values(2, 'Ann', 'Jones', 'd3')
37> insert into employee values(3, 'John', 'Barrimore','d1')
38> insert into employee values(4, 'James', 'James', 'd2')
39> insert into employee values(5, 'Elsa', 'Bertoni', 'd2')
40> insert into employee values(6, 'Elke', 'Hansel', 'd2')
41> insert into employee values(7, 'Sybill', 'Moser', 'd1')
42> GO
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
1> select * from employee
2> GO
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> CREATE TABLE works_on (emp_no INTEGER NOT NULL,
3> project_no CHAR(4) NOT NULL,
4> job CHAR (15) NULL,
5> enter_date DATETIME NULL)
6>
7> insert into works_on values (1, 'p1', 'analyst', '1997.10.1')
8> insert into works_on values (1, 'p3', 'manager', '1999.1.1')
9> insert into works_on values (2, 'p2', 'clerk', '1998.2.15')
10> insert into works_on values (2, 'p2', NULL, '1998.6.1')
11> insert into works_on values (3, 'p2', NULL, '1997.12.15')
12> insert into works_on values (4, 'p3', 'analyst', '1998.10.15')
13> insert into works_on values (5, 'p1', 'manager', '1998.4.15')
14> insert into works_on values (6, 'p1', NULL, '1998.8.1')
15> insert into works_on values (7, 'p2', 'clerk', '1999.2.1')
16> insert into works_on values (8, 'p3', 'clerk', '1997.11.15')
17> insert into works_on values (7, 'p1', 'clerk', '1998.1.4')
18> GO
Msg 2714, Level 16, State 6, Server RNTSOFT\SQLEXPRESS, Line 2
There is already an object named 'works_on' in the database.
1>
2> select * from works_on
3> GO
emp_no project_no job enter_date
----------- ---------- --------------- -----------------------
1 p1 analyst 1997-10-01 00:00:00.000
1 p3 manager 1999-01-01 00:00:00.000
2 p2 clerk 1998-02-15 00:00:00.000
2 p2 NULL 1998-06-01 00:00:00.000
3 p2 NULL 1997-12-15 00:00:00.000
4 p3 analyst 1998-10-15 00:00:00.000
5 p1 manager 1998-04-15 00:00:00.000
6 p1 NULL 1998-08-01 00:00:00.000
7 p2 clerk 1999-02-01 00:00:00.000
8 p3 clerk 1997-11-15 00:00:00.000
7 p1 clerk 1998-01-04 00:00:00.000
(11 rows affected)
1>
2> SELECT emp_fname, emp_lname FROM employee WHERE emp_no = ANY
3> (SELECT emp_no FROM works_on WHERE project_no = 'p1')
4> GO
emp_fname emp_lname
-------------------- --------------------
Matthew Smith
Elsa Bertoni
Elke Hansel
Sybill Moser
(4 rows affected)
1>
2> drop table employee
3> GO
1>
2>
]]>