SQLite doesn't accept patches:
> In order to keep SQLite completely free and unencumbered by copyright, the project does not accept patches.
> In order to keep SQLite completely free and unencumbered by copyright, the project does not accept patches.
That page says:
> the project does not accept patches from people who have not submitted an affidavit dedicating their contribution into the public domain
which is quite different from your shortened quote. This sounds similar to the CLA many projects require for contributions.
How many outside contributions does SQLite accept in practice?
Zero, afaik.
This is most clearly declared a part of legal canon whenever you write "Copyright... All Rights Reserved."
Without reservation implied licensing is presumed.