SQL And OR Operator

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

The "Persons" table:

Id	LastName	FirstName	Address	City
1	Navis	Anto	Madras	TVL
2	Ji	Bala	Bombay	TVL
3	Christopher	Franklin	America	KK

Now we want to select only the persons with the first name equal to "Bala" AND the last name equal to "Ji"

We use the following SELECT statement:

SELECT * FROM Persons WHERE FirstName='Bala' AND LastName='Ji'

The result-set will look like this:

Id	LastName	FirstName	Address	City
2	Ji	Bala	Bombay	TVL

OR Operator Example

Now we want to select only the persons with the first name equal to "Bala" OR the first name equal to "Anto"

We use the following SELECT statement:

SELECT * FROM Persons WHERE FirstName='Bala' OR FirstName='Anto'

The result-set will look like this:

Id	LastName	FirstName	Address	City
1	Navis	Anto	Madras	TVL
2	Ji	Bala	Bombay	TVL

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 "Ji" AND the first name equal to "Bala" OR to "Anto"

We use the following SELECT statement:

SELECT * FROM Persons WHERE LastName='Ji' AND (FirstName='Bala' OR FirstName='Anto')

The result-set will look like this:

Id	LastName	FirstName	Address	City
2	Ji	Bala	Bombay	TVL