Subqueries and IN Operator : Subqueries IN « Subquery « SQL Server / T-SQL

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SQL Server / T-SQL » Subquery » Subqueries IN 




Subqueries and IN Operator


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>
2CREATE TABLE department(dept_no   CHAR(4NOT NULL,
3>                         dept_name CHAR(25NOT NULL,
4>                         location  CHAR(30NULL)
5>
6insert into department values ('d1', 'developer',   'Dallas')
7insert into department values ('d2', 'tester',      'Seattle')
8insert into department values ('d3', 'marketing',  'Dallas')
9>
10select from department
11> 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> -- Subqueries and IN Operator
3>
4SELECT FROM employee WHERE dept_no IN
5>        (SELECT dept_no FROM department WHERE location = 'Dallas')
6> GO
emp_no      emp_fname            emp_lname            dept_no
----------- -------------------- -------------------- -------
          Matthew              Smith                d3
          Ann                  Jones                d3
          John                 Barrimore            d1
          Sybill               Moser                d1

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














Related examples in the same category
1.Nested three level subquery with IN operator
2.Use IN operator for a single value
3.Using the IN() Function for subquery
4.Reversing the logic using the NOT IN operator
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