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# ulong global
SET @start_global_value = @@global.debug_crc_break;
#
# exists as global only
#
select @@global.debug_crc_break;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.debug_crc_break;
show global variables like 'debug_crc_break';
show session variables like 'debug_crc_break';
select * from information_schema.global_variables where variable_name='debug_crc_break';
select * from information_schema.session_variables where variable_name='debug_crc_break';
#
# show that it's writable
#
set global debug_crc_break=1;
select @@global.debug_crc_break;
--error ER_GLOBAL_VARIABLE
set session debug_crc_break=1;
#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global debug_crc_break=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set global debug_crc_break=1e1;
--error ER_WRONG_TYPE_FOR_VAR
set global debug_crc_break="foo";
#
# min/max values
#
set global debug_crc_break=0;
select @@global.debug_crc_break;
set global debug_crc_break=cast(-1 as unsigned int);
select @@global.debug_crc_break;
SET @@global.debug_crc_break = @start_global_value;
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