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--source include/windows.inc
#
# only global
#
select @@global.shared_memory;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.shared_memory;
show global variables like 'shared_memory';
show session variables like 'shared_memory';
select * from information_schema.global_variables where variable_name='shared_memory';
select * from information_schema.session_variables where variable_name='shared_memory';
#
# show that it's read-only
#
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set global shared_memory=1;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set session shared_memory=1;
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