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select @@global.log_slave_updates;
@@global.log_slave_updates
0
select @@session.log_slave_updates;
ERROR HY000: Variable 'log_slave_updates' is a GLOBAL variable
show global variables like 'log_slave_updates';
Variable_name Value
log_slave_updates OFF
show session variables like 'log_slave_updates';
Variable_name Value
log_slave_updates OFF
select * from information_schema.global_variables where variable_name='log_slave_updates';
VARIABLE_NAME VARIABLE_VALUE
LOG_SLAVE_UPDATES OFF
select * from information_schema.session_variables where variable_name='log_slave_updates';
VARIABLE_NAME VARIABLE_VALUE
LOG_SLAVE_UPDATES OFF
set global log_slave_updates=1;
ERROR HY000: Variable 'log_slave_updates' is a read only variable
set session log_slave_updates=1;
ERROR HY000: Variable 'log_slave_updates' is a read only variable
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