On 64-bit systems, does a 32-bit column take up less space than a 64-bit bit?

Question

In MySQL running on a 64-bit OS, does each column occupy at least 64 bits? Will a whole byte take up a bit? or the whole word?

Answer 1

Here is what I think you are looking for:

http://dev.mysql.com/doc/refman/5.5/en/storage-requirements.html

" , . . , , , , [].

64 ?

? , , . , , AFAIK O (1)...

? ?

: , - , , , . MEMORY, ...

:. ( mdma), . , , MyISAM .

Answer 2

32 . , , 32- 64 ( 32- , 64- ).