Question

I have a stored procedure that needs to convert hexadecimal numbers to their decimal equivalent. I’ve read the documentation for the UNHEX() function, but it is returning a binary value. What I’m wanting to do is something like this:

CREATE PROCEDURE foo( hex_val VARCHAR(10) ) BEGIN     DECLARE dec_val INTEGER;      SET dec_val = UNHEX( hex_val );      -- Do something with the decimal value     select dec_val; END 

What am I missing? How can I convert the UNHEX()’d value to a unsigned integer?

Answer 1

You can use the CONV() function to convert between bases.

SET dec_val = CONV(hex_val, 16, 10);