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# the variable is controlled in different ways depending on whether
# gtid_mode=on or off. the behavior when gtid_mode=on is tested in
# rpl_gtid_execution.test
SET @start_global_value = @@global.gtid_owned;
SELECT @start_global_value;
#
# exists as global and session.
#
select @@global.gtid_owned;
select @@session.gtid_owned;
show global variables like 'gtid_owned';
show session variables like 'gtid_owned';
--disable_warnings
select * from performance_schema.global_variables where variable_name='gtid_owned';
select * from performance_schema.session_variables where variable_name='gtid_owned';
--enable_warnings
#
# It is not writable.
#
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set @@global.gtid_owned = 1;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set @@session.gtid_owned = 1;
#
# With GTID_MODE = OFF, gtid_owned stays empty when setting gtid_next
# to anonymous or automatic.
#
set @@session.gtid_next = 'anonymous';
select @@session.gtid_owned;
select @@global.gtid_owned;
ROLLBACK;
set @@session.gtid_next = 'automatic';
select @@session.gtid_owned;
select @@global.gtid_owned;
#
# See rpl_gtid_execution.test for a comprehensive test case with gtid_mode=on.
#
|
