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Dir : ~/www/server/mysql/mysql-test/suite/sys_vars/r/

Edit File: range_optimizer_max_mem_size_basic.result

# Display the DEFAULT value of range_optimizer_max_mem_size
SET @@session.range_optimizer_max_mem_size = DEFAULT;
SELECT @@session.range_optimizer_max_mem_size;
@@session.range_optimizer_max_mem_size
8388608
# Change the value of range_optimizer_max_mem_size to a valid
# value for SESSION Scope
SET @@session.range_optimizer_max_mem_size = 4000;
SELECT @@session.range_optimizer_max_mem_size;
@@session.range_optimizer_max_mem_size
4000
# Change the value of the range_optimizer_max_mem_size to a 
# value greater than --maximum-range-optimizer-max-mem-size
SET session range_optimizer_max_mem_size = 20000;
Warnings:
Warning	1292	Truncated incorrect range_optimizer_max_mem_size value: '20000'
SELECT @@session.range_optimizer_max_mem_size;
@@session.range_optimizer_max_mem_size
5000
# Change the value of range_optimizer_max_mem_size to an invalid value
SET @@session.range_optimizer_max_mem_size= 'NOT_CHAR_TYPE';
ERROR 42000: Incorrect argument type to variable 'range_optimizer_max_mem_size'
SET @@session.range_optimizer_max_mem_size = -10;
Warnings:
Warning	1292	Truncated incorrect range_optimizer_max_mem_size value: '-10'
SET @@session.range_optimizer_max_mem_size = 0.5;
ERROR 42000: Incorrect argument type to variable 'range_optimizer_max_mem_size'
# Check if the value in session Table matches value in variable
SET @@session.range_optimizer_max_mem_size = DEFAULT;
SELECT * FROM INFORMATION_SCHEMA.SESSION_VARIABLES
WHERE VARIABLE_NAME='range_optimizer_max_mem_size';
VARIABLE_NAME	VARIABLE_VALUE
RANGE_OPTIMIZER_MAX_MEM_SIZE	8388608
# Check if TRUE and FALSE values can be used on variable
SET @@session.range_optimizer_max_mem_size = TRUE;
SELECT @@session.range_optimizer_max_mem_size;
@@session.range_optimizer_max_mem_size
1
SET @@session.range_optimizer_max_mem_size = FALSE;
SELECT @@session.range_optimizer_max_mem_size;
@@session.range_optimizer_max_mem_size
0
# Restore initial value
SET @@session.range_optimizer_max_mem_size = DEFAULT;
SELECT @@session.range_optimizer_max_mem_size;
@@session.range_optimizer_max_mem_size
8388608
# END OF range_optimizer_max_mem_size TESTS