Dataset INTERSECT : INTERSECT « Data Set « SQL Server / T-SQL

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SQL Server / T-SQL » Data Set » INTERSECT 
Dataset INTERSECT


27>
28>
29CREATE TABLE works_on       (emp_no       INTEGER NOT NULL,
30>                         project_no    CHAR(4NOT NULL,
31>                         job CHAR (15NULL,
32>                         enter_date    DATETIME NULL)
33>
34insert into works_on values (1'p1', 'analyst', '1997.10.1')
35insert into works_on values (1'p3', 'manager', '1999.1.1')
36insert into works_on values (2'p2', 'clerk',   '1998.2.15')
37insert into works_on values (2'p2',  NULL,     '1998.6.1')
38insert into works_on values (3'p2',  NULL,     '1997.12.15')
39insert into works_on values (4'p3', 'analyst', '1998.10.15')
40insert into works_on values (5'p1', 'manager', '1998.4.15')
41insert into works_on values (6'p1',  NULL,     '1998.8.1')
42insert into works_on values (7'p2', 'clerk',   '1999.2.1')
43insert into works_on values (8'p3', 'clerk',   '1997.11.15')
44insert into works_on values (7'p1', 'clerk',   '1998.1.4')
45>
46select from works_on
47>
48CREATE TABLE employee  (emp_no    INTEGER NOT NULL,
49>                         emp_fname CHAR(20NOT NULL,
50>                         emp_lname CHAR(20NOT NULL,
51>                         dept_no   CHAR(4NULL)
52>
53insert into employee values(1,  'Matthew', 'Smith',    'd3')
54insert into employee values(2,  'Ann',     'Jones',    'd3')
55insert into employee values(3,  'John',    'Barrimore','d1')
56insert into employee values(4,  'James',   'James',    'd2')
57insert into employee values(5,  'Elsa',    'Bertoni',  'd2')
58insert into employee values(6,  'Elke',    'Hansel',   'd2')
59insert into employee values(7,  'Sybill',  'Moser',    'd1')
60>
61select from employee
62> GO

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)
emp_no      project_no job             enter_date
----------- ---------- --------------- -----------------------
          p1         analyst         1997-10-01 00:00:00.000
          p3         manager         1999-01-01 00:00:00.000
          p2         clerk           1998-02-15 00:00:00.000
          p2         NULL            1998-06-01 00:00:00.000
          p2         NULL            1997-12-15 00:00:00.000
          p3         analyst         1998-10-15 00:00:00.000
          p1         manager         1998-04-15 00:00:00.000
          p1         NULL            1998-08-01 00:00:00.000
          p2         clerk           1999-02-01 00:00:00.000
          p3         clerk           1997-11-15 00:00:00.000
          p1         clerk           1998-01-04 00:00:00.000

(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>
2SELECT emp_no FROM employee WHERE dept_no = 'd1'
3> INTERSECT
4SELECT emp_no FROM works_on WHERE enter_date < '01.01.1999'
5> GO
emp_no
-----------
          3
          7

(rows affected)
1>
2> drop table employee
3> drop table works_on
4> GO
1>
           
       
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