How Do I Convert Between Integers and Hexadecimal Values in SQL Server?

Converting Integers and Hexadecimal Values in SQL Server

When working with databases, it is often necessary to convert between integer and hexadecimal (hex) values. In Microsoft SQL Server, there are specific functions available to handle these conversions.

Converting Integer to Hex

To convert an integer to a hex value, use the CONVERT function with the VARBINARY data type and a base of 16. For example:

SELECT CONVERT(VARBINARY(8), 16777215);

This will return the hex value 'FFFFFF' (without the quotes).

Converting Hex to Integer

To convert a hex value to an integer, use the CONVERT function with the INT data type and a base of 16. For example:

SELECT CONVERT(INT, 0xFFFFFF);

This will return the integer value 16777215.

Update: Converting Hex Strings to Integers

If the hex value is stored as a string (e.g., in a varchar column), use the following syntax with CONVERT:

SELECT CONVERT(INT, CONVERT(VARBINARY, '0x1FFFFF', 1)); -- With '0x' marker
SELECT CONVERT(INT, CONVERT(VARBINARY, '1FFFFF', 2)); -- Without '0x' marker

Note: The string must have an even number of hex digits.

Conclusion

These CONVERT functions provide efficient ways to convert between integer and hex values in SQL Server, enabling you to perform data manipulation and analysis tasks effectively.

The above is the detailed content of How Do I Convert Between Integers and Hexadecimal Values in SQL Server?. For more information, please follow other related articles on the PHP Chinese website!