Release History and Changes

Unreleased

New features:

Users of UnsafePtr are now required to call FunctionOptions::set_read_subtype and/or FunctionOptions::set_return_subtype as appropriate. SQLite 3.45.0 added some optimizations that may discard subtype information if they are not used. Consider migrating PassedRef instead, if possible.
FunctionOptions::set_n_args can now accept values up to 32767, although attempting to use values higher than the limit (currently 1000 by default) will cause the function registration to fail.

Bug fixes:

Breaking changes:

VTab must be Sized. Also, VTabFunctionList's generic parameter must be Sized, which is normally the VTab.
VTab::Disconnect and VTab::destroy now return a DisconnectResult, allowing you to recover the VTab if the disconnection fails because the table is still in use.
VTabCursor methods now receive &mut self instead of &self.
VTabCursor and VTabTransaction no longer take a lifetime parameter. This has no change in functionality but makes implementations cleaner.
User-defined functions now receive &mut Context instead of &Context.
Context::aux_data now returns &T instead of &mut T. Context::aux_data_mut allows retrieving a &mut T. Both methods now return a Result to differentiate missing data from incorrect T type.
DistinctMode is now a struct instead of an enum. This allows supporting the new return value provided by SQLite 3.39.0.

New features:

Connection::create_scalar_function_object is an alternative to Connection::create_scalar_function which allows using a lifetime smaller than 'static.
impl From<&str> for Error allows easily setting arbitrary error messages.
QueryResult::is_empty and Blob::is_empty as shorthand for len() == 0.