I thought that was discussed before over and over on this mailinglist. I
am surprised that many people have isues with that topic. Basically it
boils down to 2 questions.
1) Will you include and ditsribute the source code and the changes (if
any) and the GPL license in your product ?
If yes, than you DONT need a commercial license.
if NO, (in other words you dont want to publish any changes you made to
the code) then you need a commercial license.
2) Are you selling the product or a service ?
If you are trying to sell the customer the very same MySQL product for $$
that he can download, then you must be good at sales, no questions asked.
If you are selling a service (Consulting, Installation and setup etc. than
you also dont need a commercial license ( + same as under 1 applies).
Summary: You only need the commercial license if you change the code and
want to distribute it as closed source.
You can however at any time make a support contract or buy a commercial
license to show your gratitude for the MySQL guys.
That is usually a nice gesture, gets you support and backup when you need
it and last but not least makes you feel good (peace of mind ;-).
I hope that makes things clearer.
Tokyo / Japan
> Suppose i distribute MySQL-4.1 with an appliance,
> which is a sealed x86 machine running a Linux
> distribution made by another entity (ok, it's Red
> Hat). I don't write any code that's directly linked to
> MySQL, I'm only using the existing php-mysql, etc.,
> packages already provided by the distribution, plus
> some third-party apps that are under GPL and link to
> MySQL (applications that access MySQL, not written by
> me, but are Open Source GPL projects off SourceForge
> and other places - i just bundle them with the
> Any code that I write personally is PHP and sits on
> top of the php-mysql module provided by Red Hat.
> The end-user has no direct visibility to the database,
> in fact, the end-user might never know it's MySQL -
> all that is visible is the PHP interface, via Apache.
> In this case, what's the license? Is MySQL still free
> (under GPL)?
> Pat Ballard
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