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SQL Server FAQ - BETWEEN - Testing Value in a Range

By: FYIcenter.com

(Continued from previous topic...)

What To Test Value Ranges with the BETWEEN Operator?

Sometimes you want to compare a value against a value range. You can do this with two regular comparison operations. But you can also use the special comparison operator BETWEEN to get it done with the following syntaxes:

1. Inclusively in the range test
test_value BETWEEN range_start_value AND range_end_value

- Returns the same results as the following expression
test_value >= range_start_value 
AND test_value <= range_end_value

2. Exclusively out of the range test
test_value NOT BETWEEN range_start_value AND range_end_value

- Returns the same results as the following expression
test_value < range_start_value 
OR test_value > range_end_value

Here are two examples of using the BETWEEN operator:

DECLARE @my_age INT;
SET @my_age = 17;
SELECT CASE WHEN 
      @my_age BETWEEN 11 AND 19
   THEN 'You are a teenager.'
   ELSE 'You are not a teenager.'
   END;
GO
You are a teenager.

DECLARE @my_age INT;
SET @my_age = 27;
SELECT CASE WHEN 
      @my_age NOT BETWEEN 11 AND 19
   THEN 'You are not a teenager.'
   ELSE 'You are a teenager.'
   END;
GO
You are not a teenager.

(Continued on next topic...)

  1. What Is a Boolean Value?
  2. What Are Conditional Expressions?
  3. What Are Comparison Operations?
  4. How To Perform Comparison on Exact Numbers?
  5. How To Perform Comparison on Floating Point Numbers?
  6. How To Perform Comparison on Date and Time Values?
  7. How To Perform Comparison on Character Strings?
  8. What To Test Value Ranges with the BETWEEN Operator?
  9. What To Test Value Lists with the IN Operator?
  10. What To Perform Pattern Match with the LIKE Operator?
  11. How To Use Wildcard Characters in LIKE Operations?
  12. How To Test Subquery Results with the EXISTS Operator?
  13. How To Test Values Returned by a Subquery with the IN Operator?
  14. What Are Logical/Boolean Operations?

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