[debian-mysql] Bug#977383: mariadb-server-10.3: Update to 10.3.27 causes invalid syntax errors on syntax "WHERE `field` IS NULL = 0"

[Geert Lorang]

Package: mariadb-server-10.3
Version: 1:10.3.27-0+deb10u1
Severity: normal

Dear Maintainer,

The upgrade of MariaDB from 10.3.25 to 10.3.27 caused the syntax "WHERE `field` IS NULL = 0" to be invalid. This was working fine in 10.3.25.

This is following upstream problem: https://jira.mariadb.org/browse/MDEV-24194

Affected versions (for 10.3 branch) are 10.3.26 and 10.3.27.

Could we get the fix from upstream 10.3.28 in Debian as well?

Thanks,

-- System Information:
Debian Release: 10.7
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-12-amd64 (SMP w/2 CPU cores)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages mariadb-server-10.3 depends on:
ii  adduser                   3.118
ii  debconf [debconf-2.0]     1.5.71
ii  galera-3                  25.3.25-2
ii  gawk                      1:4.2.1+dfsg-1
ii  iproute2                  4.20.0-2
ii  libc6                     2.28-10
ii  libdbi-perl               1.642-1+deb10u1
ii  libgnutls30               3.6.7-4+deb10u5
ii  libpam0g                  1.3.1-5
ii  libstdc++6                8.3.0-6
ii  lsb-base                  10.2019051400
ii  lsof                      4.91+dfsg-1
ii  mariadb-client-10.3       1:10.3.27-0+deb10u1
ii  mariadb-common            1:10.3.27-0+deb10u1
ii  mariadb-server-core-10.3  1:10.3.27-0+deb10u1
ii  passwd                    1:4.5-1.1
ii  perl                      5.28.1-6+deb10u1
ii  psmisc                    23.2-1
ii  rsync                     3.1.3-6
ii  socat                     1.7.3.2-2
ii  zlib1g                    1:1.2.11.dfsg-1

Versions of packages mariadb-server-10.3 recommends:
ii  libhtml-template-perl  2.97-1

Versions of packages mariadb-server-10.3 suggests:
ii  mailutils [mailx]  1:3.5-4
pn  mariadb-test       <none>
pn  netcat-openbsd     <none>
pn  tinyca             <none>

-- debconf information excluded