What's the easiest way to represent a bytea as a single integer in PostgreSQL?

Question

I have a bytea column that contains 14 bytes of data. The last 3 bytes of the 14 contain the CRC code of the data. I would like to extract the CRC as a single i

Answer 1

Well if we're going to do byte-by-byte operations, then bit shifting is probably much more efficient than multiplication.

Based on Clodoaldo Neto's answer I would then say:

select (get_byte(arm_data, 11) << 16) |
       (get_byte(arm_data, 12) << 8) |
       (get_byte(arm_data, 13))
            from adsb_raw_message;

Does everyone agree?