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# ulonglong session
SET @start_global_value = @@global.join_buffer_space_limit;
#
# exists as global and session
#
select @@global.join_buffer_space_limit;
select @@session.join_buffer_space_limit;
show global variables like 'join_buffer_space_limit';
show session variables like 'join_buffer_space_limit';
select * from information_schema.global_variables where variable_name='join_buffer_space_limit';
select * from information_schema.session_variables where variable_name='join_buffer_space_limit';
#
# show that it's writable
#
set global join_buffer_space_limit=10;
select @@global.join_buffer_space_limit;
set session join_buffer_space_limit=10;
select @@session.join_buffer_space_limit;
#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global join_buffer_space_limit=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set session join_buffer_space_limit=1e1;
--error ER_WRONG_TYPE_FOR_VAR
set global join_buffer_space_limit="foo";
#
# min/max values, block size
#
set global join_buffer_space_limit=0;
select @@global.join_buffer_space_limit;
set global join_buffer_space_limit=4095;
select @@global.join_buffer_space_limit;
set session join_buffer_space_limit=cast(-1 as unsigned int);
select @@session.join_buffer_space_limit;
SET @@global.join_buffer_space_limit = @start_global_value;
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