The UPDATE statement wrote NULL when the column set is DATETIME and
value is '0000-00-00 00:00:00'. The problem was inside WriteEngine's
handling of UPDATE statements and this is where heart of change is.
Other changes are related to some obsolete data structures in DML/DDL
handling that just hanging around there, doing nothing.
* Fix clang warnings
* Remove vim tab guides
* initialize variables
* 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length
* Fix ISO C++17 does not allow 'register' storage class specifier for outdated bison
* chars are unsigned on ARM, having if (ival < 0) always false
* chars are unsigned by default on ARM and comparison with -1 if always true
when a non-existing table is dropped.
This patch accomodates the changes made to server 10.5 as part
of MDEV-11412, where the server now tries to drop the table from
all storage engines when a .frm table does not exist.
We were earlier retuning a warning to the client and setting the
return code to 0. We now instead return ER_NO_SUCH_TABLE_IN_ENGINE
error code to the server if the table does not exist in
ColumnStore.
