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Re: How to migrate column type from uuid to serial

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Sorry if this is silly but if it is a 128 bit number, why do we need 32 characters to represent it? Isn't 8 bits one byte?

On Wed, Oct 7, 2020 at 8:08 PM Thomas Kellerer <shammat@xxxxxxx> wrote:
Hemil Ruparel schrieb am 07.10.2020 um 16:21:
> it is declared as uuid. But how does it occupy only 16 bytes?

Because a UUID is internally simply a 128bit number - the dashes you see are just formatting.

But if you can only send the text represnation, then yes 32 characters aren't enough.



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