SQL BETWEEN Operator

The SQL BETWEEN operator is used to retrieve values that fall within a specified range. It works with numbers, dates, and text and makes range-based filtering simple and readable.

• Filters results between two values, including both boundaries.
• Works on numeric, date, and string columns.
• Useful for filtering data within defined ranges.

Example: First, we create a demo SQL database and table, on which we will use the BETWEEN Operator command.

Query:

SELECT * FROM Employees
WHERE Age BETWEEN 26 AND 35;

Output:

Syntax:

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

Examples of BETWEEN Operator

To understand the SQL BETWEEN Operator we use the below below employees table with the various examples and their output.

Example 1: NOT BETWEEN Text Values

Find employees whose last names are not alphabetically between 'B' and 'S'.

Query:

SELECT FirstName, LastName 
FROM Employees 
WHERE LastName NOT BETWEEN 'B' AND 'S';

Output:

• The query selects employees whose last names are lexicographically outside the range 'B' to 'S', based on full string comparison.
• Smith and Wilson are greater than 'S' in string order, so Jane Smith and Sue Wilson appear in the result.

Example 2: BETWEEN Dates

Find employees hired between January 1, 2020 and December 31, 2021.

Query:

SELECT FirstName, LastName, HireDate 
FROM Employees 
WHERE HireDate BETWEEN '2020-01-01' AND '2021-12-31';

Output:

• This query returns employees who were hired during the years 2020 and 2021.
• The BETWEEN operator is used to filter the HireDate field, returning records within the specified date range.

Example 3: NOT BETWEEN

Find employees whose age is not between 30 and 40.

Query:

SELECT FirstName, LastName, Age 
FROM Employees 
WHERE Age NOT BETWEEN 30 AND 40;

Output:

• This query retrieves employees whose age does not fall between 30 and 40.
• The NOT BETWEEN operator is used here to exclude employees within that age range.
• John, Sam, and Sue meet this condition, as their ages are outside the 30-40 range.

Example 4: BETWEEN with IN

Find employees whose salaries are between 50,000 and 70,000 and whose first names are either 'John', 'Sue', or 'Tom'.

Query:

SELECT FirstName, LastName, Salary 
FROM Employees 
WHERE Salary BETWEEN 50000 AND 70000 
 AND FirstName IN ('John', 'Sue', 'Tom');

Output:

• Filters employees whose salary is between 50,000 and 70,000.
• Checks whether the first name is John, Sue, or Tom.
• Only John and Tom satisfy both conditions and appear in the result