SQL OR Operator
The SQL OR Operator
WHERE clause can contain one or more
is used to filter records based on more than one condition, like if you want to
return all customers from Germany but also those from Spain:
Select all customers from Germany or Spain:
WHERE Country = 'Germany' OR Country = 'Spain';
SELECT column1, column2, ...
WHERE condition1 OR condition2 OR condition3 ...;
OR vs AND
OR operator displays a record if any of the conditions are TRUE.
AND operator displays a record if all the conditions are TRUE.
Below is a selection from the Customers table used in the examples:
||Alfreds Futterkiste||Maria Anders||Obere Str. 57||Berlin||12209||Germany|
|2||Ana Trujillo Emparedados y helados||Ana Trujillo||Avda. de la Constitución 2222||México D.F.||05021||Mexico|
|3||Antonio Moreno Taquería||Antonio Moreno||Mataderos 2312||México D.F.||05023||Mexico|
||Around the Horn||Thomas Hardy||120 Hanover Sq.||London||WA1 1DP||UK|
|5||Berglunds snabbköp||Christina Berglund||Berguvsvägen 8||Luleå||S-958 22||Sweden|
At Least One Condition Must Be True
The following SQL statement selects all fields from Customers where either
City is "Berlin",
CustomerName starts with the letter "G" or
Country is "Norway":
WHERE City = 'Berlin' OR CustomerName LIKE 'G%' OR Country = 'Norway';
Combining AND and OR
You can combine the
The following SQL statement selects all customers from Spain that starts with a "G" or an "R".
Make sure you use parenthesis to get the correct result.
Select all Spanish customers that starts with either "G" or "R":
WHERE Country = 'Spain' AND (CustomerName LIKE 'G%' OR CustomerName LIKE 'R%');
Without parenthesis, the select statement will return all customers from Spain that starts with a "G", plus all customers that starts with an "R", regardless of the country value:
Select all customers that either:
are from Spain and starts with either "G", or
starts with the letter "R":
WHERE Country = 'Spain' AND CustomerName LIKE 'G%' OR CustomerName LIKE 'R%';