Display binary(16) column as hex in mysql

Question

Given a binary(16) column, how do I display its value as a hexadecimal number? I\'ve been experimenting in the console a little below, and I\'m not getting the results I exp

Answer 1

Why make things complicated? I just use this to display the value of a BINARY(16) column:

SELECT HEX(colname);

Answer 2

Use CONV function

-- convert '10000'(16 in binary) in hex
SELECT CONV('10000',2,16);
-- Ouput: 10


-- convert 'F' in hex to binary
SELECT CONV('F',16,2);
-- Output: 1111

Hexadecimal to binary table

Hexadecimal Binary
0         0000
1         0001
2         0010
3         0011
4         0100
5         0101
6         0110
7         0111
8         1000
9         1001
A         1010
B         1011
C         1100
D         1101
E         1110
F         1111
10       10000
11       10001
...

Answer 3

Just try this and you will clear your mind:

select conv(cast(10 as binary), 10, 16);

BINARY data type is treated as decimal string by default