SQL BETWEEN Operator

From http://www.w3schools.com (Copyright Refsnes Data)

# SQL BETWEEN Operator

The BETWEEN operator is used in a WHERE clause to select a range of data between two values.

## The BETWEEN Operator

The BETWEEN operator selects a range of data between two values. The values can be numbers, text, or dates.

### SQL BETWEEN Syntax

    SELECT column_name(s)
    FROM table_name
    WHERE column_name
    BETWEEN value1 AND value2

## BETWEEN Operator Example

The "Persons" table:

P_Id | LastName | FirstName | Address | City
--- | --- | --- | --- | ---
1 | Hansen | Ola | Timoteivn 10 | Sandnes
2 | Svendson | Tove | Borgvn 23 | Sandnes
3 | Pettersen | Kari | Storgt 20 | Stavanger

Now we want to select the persons with a last name alphabetically between "Hansen" and "Pettersen" from the table above.

We use the following SELECT statement:

    SELECT * FROM Persons
    WHERE LastName
    BETWEEN 'Hansen' AND 'Pettersen'

The result-set will look like this:

P_Id | LastName | FirstName | Address | City
--- | --- | --- | --- | ---
1 | Hansen | Ola | Timoteivn 10 | Sandnes

Note: The BETWEEN operator is treated differently in different databases.

In some databases, persons with the LastName of "Hansen" or "Pettersen" will not be listed, because the BETWEEN operator only selects fields that are between and excluding the test values).

In other databases, persons with the LastName of "Hansen" or "Pettersen" will be listed, because the BETWEEN operator selects fields that are between and including the test values).

And in other databases, persons with the LastName of "Hansen" will be listed, but "Pettersen" will not be listed (like the example above), because the BETWEEN operator selects fields between the test values, including the first test value and excluding the last test value.

Therefore: Check how your database treats the BETWEEN operator.

## Example 2

To display the persons outside the range in the previous example, use NOT BETWEEN:

    SELECT * FROM Persons
    WHERE LastName
    NOT BETWEEN 'Hansen' AND 'Pettersen'

The result-set will look like this:

P_Id | LastName | FirstName | Address | City
--- | --- | --- | --- | ---
2 | Svendson | Tove | Borgvn 23 | Sandnes
3 | Pettersen | Kari | Storgt 20 | Stavanger

From http://www.w3schools.com (Copyright Refsnes Data)