Page 78 - SQL

2 John Johnson 2468101214 1 1 400 23-03-2005 23-03-
2005 01-01-2002
3 Michael Williams 1357911131 1 2 600 12-05-2009 12-05-
2009 NULL
4 Johnathon Smith 1212121212 2 1 500 24-07-2016 24-07-
2016 01-01-2002

Using a WHERE at the end of your SELECT statement allows you to limit the returned rows to a
condition. In this case, where there is an exact match using the = sign:

SELECT * FROM Employees WHERE DepartmentId = 1

Will only return the rows where the DepartmentId is equal to 1:

Id FName LName PhoneNumber ManagerId DepartmentId Salary Hire_date
CreatedDate ModifiedDate
1 James Smith 1234567890 NULL 1 1000 01-01-2002 01-01-
2002 01-01-2002
2 John Johnson 2468101214 1 1 400 23-03-2005 23-03-
2005 01-01-2002
4 Johnathon Smith 1212121212 2 1 500 24-07-2016 24-07-
2016 01-01-2002

AND and OR

You can also combine several operators together to create more complex WHERE conditions. The
following examples use the Employees table:

Id FName LName PhoneNumber ManagerId DepartmentId Salary Hire_date
CreatedDate ModifiedDate
1 James Smith 1234567890 NULL 1 1000 01-01-2002 01-01-
2002 01-01-2002
2 John Johnson 2468101214 1 1 400 23-03-2005 23-03-
2005 01-01-2002
3 Michael Williams 1357911131 1 2 600 12-05-2009 12-05-
2009 NULL
4 Johnathon Smith 1212121212 2 1 500 24-07-2016 24-07-
2016 01-01-2002

AND

SELECT * FROM Employees WHERE DepartmentId = 1 AND ManagerId = 1

Will return:

Id FName LName PhoneNumber ManagerId DepartmentId Salary Hire_date
CreatedDate ModifiedDate
2 John Johnson 2468101214 1 1 400 23-03-2005 23-03-
2005 01-01-2002

OR

https://riptutorial.com/ 60