SQL AND & OR Operators

The AND & OR operators are used to filter records based on more than one condition.

The AND operator displays a record if both the first condition and the second condition is true.

The OR operator displays a record if either the first condition or the second condition is true.

AND Operator Example

“Persons” TABLE:

P_Id	LastName	FirstName	Address	City
1	Suhail	Osmani	Maharaj Nagar	Sitapur
2	Maxwel	Tom	Biswan	Sitapur
3	Rahi	Ayon	Okhla	Delhi

Now we want to select only the persons with the first name equal to "Tom" AND the last name equal to "Maxwel":
We use the following SELECT statement:

SELECT * FROM Persons WHERE FirstName='Tom'  AND LastName='Maxwel'

Output:

P_Id	LastName	FirstName	Address	City
2	Maxwel	Tom	Biswan	Sitapur

OR Operator Example

Now we want to select only the persons with the first name equal to "Tom" OR the first name equal to "Osmani": We use the following SELECT statement:

SELECT * FROM Persons WHERE FirstName='Tom' OR FirstName='Osmani'

Output:

P_Id	LastName	FirstName	Address	City
1	Suhail	Osmani	Maharaj Nagar	Sitapur
2	Maxwel	Tom	Biswan	Sitapur

9.Combining AND & OR

You can also combine AND and OR (use parenthesis to form complex expressions).
Now we want to select only the persons with the last name equal to "Maxwel" AND the first name equal to "Tom" OR to "Osmani": We use the following SELECT statement:

SELECT * FROM Persons WHERE LastName='Maxwel'  AND  (FirstName='Tom' OR FirstName='Osmani')

Output:

P_Id	LastName	FirstName	Address	City
2	Maxwel	Tom	Biswan	Sitapur