CREATE TABLE valid_values (value varchar(255));
INSERT INTO valid_values VALUES(0);
INSERT INTO valid_values VALUES(1);
INSERT INTO valid_values VALUES(2);
CREATE TABLE invalid_values (value varchar(255));
INSERT INTO invalid_values VALUES('\'a\'');
INSERT INTO invalid_values VALUES('\'b\'');
SET @start_global_value = @@global.XENGINE_BOTTOMMOST_LEVEL;
SELECT @start_global_value;
@start_global_value
2
'# Setting to valid values in global scope#'
"Trying to set variable @@global.XENGINE_BOTTOMMOST_LEVEL to 0"
SET @@global.XENGINE_BOTTOMMOST_LEVEL   = 0;
SELECT @@global.XENGINE_BOTTOMMOST_LEVEL;
@@global.XENGINE_BOTTOMMOST_LEVEL
0
"Setting the global scope variable back to default"
SET @@global.XENGINE_BOTTOMMOST_LEVEL = DEFAULT;
SELECT @@global.XENGINE_BOTTOMMOST_LEVEL;
@@global.XENGINE_BOTTOMMOST_LEVEL
2
"Trying to set variable @@global.XENGINE_BOTTOMMOST_LEVEL to 1"
SET @@global.XENGINE_BOTTOMMOST_LEVEL   = 1;
SELECT @@global.XENGINE_BOTTOMMOST_LEVEL;
@@global.XENGINE_BOTTOMMOST_LEVEL
1
"Setting the global scope variable back to default"
SET @@global.XENGINE_BOTTOMMOST_LEVEL = DEFAULT;
SELECT @@global.XENGINE_BOTTOMMOST_LEVEL;
@@global.XENGINE_BOTTOMMOST_LEVEL
2
"Trying to set variable @@global.XENGINE_BOTTOMMOST_LEVEL to 2"
SET @@global.XENGINE_BOTTOMMOST_LEVEL   = 2;
SELECT @@global.XENGINE_BOTTOMMOST_LEVEL;
@@global.XENGINE_BOTTOMMOST_LEVEL
2
"Setting the global scope variable back to default"
SET @@global.XENGINE_BOTTOMMOST_LEVEL = DEFAULT;
SELECT @@global.XENGINE_BOTTOMMOST_LEVEL;
@@global.XENGINE_BOTTOMMOST_LEVEL
2
"Trying to set variable @@session.XENGINE_BOTTOMMOST_LEVEL to 444. It should fail because it is not session."
SET @@session.XENGINE_BOTTOMMOST_LEVEL   = 444;
ERROR HY000: Variable 'xengine_bottommost_level' is a GLOBAL variable and should be set with SET GLOBAL
'# Testing with invalid values in global scope #'
"Trying to set variable @@global.XENGINE_BOTTOMMOST_LEVEL to 'a'"
SET @@global.XENGINE_BOTTOMMOST_LEVEL   = 'a';
Got one of the listed errors
SELECT @@global.XENGINE_BOTTOMMOST_LEVEL;
@@global.XENGINE_BOTTOMMOST_LEVEL
2
"Trying to set variable @@global.XENGINE_BOTTOMMOST_LEVEL to 'b'"
SET @@global.XENGINE_BOTTOMMOST_LEVEL   = 'b';
Got one of the listed errors
SELECT @@global.XENGINE_BOTTOMMOST_LEVEL;
@@global.XENGINE_BOTTOMMOST_LEVEL
2
SET @@global.XENGINE_BOTTOMMOST_LEVEL = @start_global_value;
SELECT @@global.XENGINE_BOTTOMMOST_LEVEL;
@@global.XENGINE_BOTTOMMOST_LEVEL
2
DROP TABLE valid_values;
DROP TABLE invalid_values;