Our library is registering a SQLITE_CONFIG_LOG callback* to log error messages.
This can provide useful information about errors returned by SQLite. However,
we’ve found a side effect that, since this callback is global, it gets called
due to activity from other clients using SQLite in the same process. (This is
on iOS, where SQLite is a ubiquitous system-provided DLL that is used by a lot
of OS APIs, as well as many 3rd party libraries used in apps.)
So for example, we sometimes end up logging
WARNING: SQLite error (code 1): no such table: cfurl_cache_response
which has nothing to do with our library, rather with the system CFNetwork
framework.
It’s not a big deal, but some developers freak about warning messages and will
either file support tickets or ask for help on our forums, which increases our
workload.
My request is for some equivalent of this functionality which is scoped to a
specific database connection, so that we only hear about SQLite warnings
regarding our own activity.
(Yes, statically linking our own copy of SQLite would solve this problem. But
it would increase our code size by a megabyte or so, which is undesirable for a
mobile-focused library. Moreover, there are database corruption issues that can
be caused by having multiple copies of SQLite code running in a single process.)
—Jens
* https://sqlite.org/c3ref/c_config_covering_index_scan.html
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