Hi, Alexander! On Sep 21, Alexander Barkov wrote:

commit 6c49030635a36380606948c198dcfd4a6bf2ffc3 Author: Alexander Barkov <bar@mariadb.org> Date: Wed Sep 21 12:29:09 2016 +0400

MDEV-10425 Assertion `collation.derivation == DERIVATION_IMPLICIT' failed in Item_func_conv_charset::fix_length_and_dec() MDEV-10850 Wrong result for WHERE .. (f2=TO_BASE64('test') OR f2=TO_BASE64('TEST')) ... Solution: - Removing the code changing args[0]->collation - Introducing Item_str_ascii_checksum_func as a common parent for Item_func_{md5|sha|sha2|password|hex|to_base64} and overriding its eq() method to compare arguments binary.

Good fix, thanks! Ok to push Regards, Sergei Chief Architect MariaDB and security@mariadb.org