client is not using any database to execute the SQL.
Analysis:
When there is no database, the database string is NULL so (null) gets
printed.
Fix:
Print NULL instead of (null) because when there is no database SELECT
DATABASE() return NULL. SO NULL is more appropriate choice.
to SQL error plugin
New plugin variable "with_db_and_thread_info" is added which prints the
thread id and databse name to the logfile. the value is stored in variable
"with_db_and_thread_info"
log_sql_errors() is responsible for printing in the log. If detailed is
enabled, print thread id and database name both, otherwise skip it.
Binary logging is now disabled for the queries run by SQL SERVICE.
The binlogging can be turned on with the 'SET SQL_LOG_BIN=On' query.
Conflicts:
sql/sql_prepare.cc
Conflicts:
sql/sql_prepare.cc
mysqladmin's presumption about the cause of an error by looking
at the error code was presumptious. Server knows best, so pass
the error along.
Avoid returning -1 as a exit code, Linux makes this 255 and Windows
keeps this as -1.
make TRANSACTIONAL table option behave similar to other engine-defined
table options. If the engine doesn't suport it:
* if specified expicitly in CREATE or ALTER - it's ER_UNKNOWN_OPTION
* an error or a warning depending on sql_mode IGNORE_BAD_TABLE_OPTIONS
* in ALTER TABLE from the engine that suppors it to the engine that
doesn't - silently preserved (no warning)
* it is commented out in SHOW CREATE unless IGNORE_BAD_TABLE_OPTIONS
differently react to SQL_MODE => unusable SHOW CREATE
Use abort_on_warning dependent on strict mode over create new table
like it is done for copy data and inplace alter.
MDEV-28227 added the error messages in simplified characters.
Lets use these for those running a zh_CN profile.
From Haidong Ji in the MDEV, Taiwan/Hong Kong (zh_TW/zh_HK)
would expect traditional characters so this is left for when
we have these.
plugin_vars_free_values() was walking plugin sysvars and thus
did not free memory of plugin PLUGIN_VAR_NOSYSVAR vars.
* change it to walk all plugin vars
* add the pluginname_ prefix to NOSYSVARS var names too,
so that plugin_vars_free_values() would be able to find their
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