SQL BETWEEN

What is BETWEEN?

The BETWEEN operator in SQL is used to filter the result set within a certain range. It is inclusive, meaning it will include the boundary values specified.

Syntax of BETWEEN

The basic syntax of the BETWEEN operator is:

SELECT column1, column2, ...
FROM table_name
WHERE column_name BETWEEN value1 AND value2;

Example of Using BETWEEN

Here’s an example of how to use the BETWEEN operator:

SELECT * FROM Products
WHERE Price BETWEEN 10 AND 50;

This query retrieves all products with a price between 10 and 50, including those priced exactly at 10 and 50.

Using BETWEEN with Dates

The BETWEEN operator can also be used to filter records based on date ranges:

SELECT * FROM Orders
WHERE OrderDate BETWEEN '2024-01-01' AND '2024-12-31';

This retrieves all orders placed in the year 2024.

Performance Considerations

While using BETWEEN is straightforward, consider the following:

• Ensure the columns used with BETWEEN are indexed for better performance.
• Be cautious of data types; ensure that the values used in the range match the data type of the column.
• In cases of large datasets, test the performance of queries using BETWEEN against those using comparison operators.