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|
#
# performance_schema_max_digest_sample_age
#
SET @global_start_value = @@global.performance_schema_max_digest_sample_age;
SELECT @global_start_value;
--echo #
--echo # Default value
--echo #
SET @@global.performance_schema_max_digest_sample_age = 1;
SET @@global.performance_schema_max_digest_sample_age = DEFAULT;
SELECT @@global.performance_schema_max_digest_sample_age;
--echo
--echo # Check if performance_schema_max_digest_sample_age can be accessed with and without @@
--echo
--Error ER_GLOBAL_VARIABLE
SET performance_schema_max_digest_sample_age = 1;
SELECT @@performance_schema_max_digest_sample_age;
--Error ER_UNKNOWN_TABLE
SELECT local.performance_schema_max_digest_sample_age;
SET global performance_schema_max_digest_sample_age = 1;
SELECT @@global.performance_schema_max_digest_sample_age;
--echo
--echo # Change the value of performance_schema_max_digest_sample_age to a valid value
--echo
SET @@global.performance_schema_max_digest_sample_age = 1;
SELECT @@global.performance_schema_max_digest_sample_age;
SET @@global.performance_schema_max_digest_sample_age = 5000;
SELECT @@global.performance_schema_max_digest_sample_age;
SET @@global.performance_schema_max_digest_sample_age = 1048576;
SELECT @@global.performance_schema_max_digest_sample_age;
--echo
--echo # Change the value of performance_schema_max_digest_sample_age to invalid value
--echo
SET @@global.performance_schema_max_digest_sample_age = 0;
SELECT @@global.performance_schema_max_digest_sample_age;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.performance_schema_max_digest_sample_age = "T";
SELECT @@global.performance_schema_max_digest_sample_age;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.performance_schema_max_digest_sample_age = 'Y';
SELECT @@global.performance_schema_max_digest_sample_age;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.performance_schema_max_digest_sample_age = ' ';
SELECT @@global.performance_schema_max_digest_sample_age;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.performance_schema_max_digest_sample_age = " ";
SELECT @@global.performance_schema_max_digest_sample_age;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.performance_schema_max_digest_sample_age = 1.1;
SELECT @@global.performance_schema_max_digest_sample_age;
SET @@global.performance_schema_max_digest_sample_age = 1048577;
SELECT @@global.performance_schema_max_digest_sample_age;
--echo
--echo # Check if the value in GLOBAL Table matches value in variable
--echo
--disable_warnings
SELECT @@global.performance_schema_max_digest_sample_age =
VARIABLE_VALUE FROM performance_schema.global_variables
WHERE VARIABLE_NAME='performance_schema_max_digest_sample_age';
--enable_warnings
SELECT @@global.performance_schema_max_digest_sample_age;
--disable_warnings
SELECT VARIABLE_VALUE FROM performance_schema.global_variables
WHERE VARIABLE_NAME='performance_schema_max_digest_sample_age';
--enable_warnings
--echo
--echo # Check if ON and OFF values can be used on variable
--echo
--ERROR ER_WRONG_TYPE_FOR_VAR
SET @@global.performance_schema_max_digest_sample_age = OFF;
SELECT @@global.performance_schema_max_digest_sample_age;
--ERROR ER_WRONG_TYPE_FOR_VAR
SET @@global.performance_schema_max_digest_sample_age = ON;
SELECT @@global.performance_schema_max_digest_sample_age;
--echo
--echo # Check if TRUE and FALSE values can be used on variable
--echo
SET @@global.performance_schema_max_digest_sample_age = TRUE;
SELECT @@global.performance_schema_max_digest_sample_age;
SET @@global.performance_schema_max_digest_sample_age = FALSE;
SELECT @@global.performance_schema_max_digest_sample_age;
--echo
--echo # Restore initial value
--echo
SET @@global.performance_schema_max_digest_sample_age = @global_start_value;
SELECT @@global.performance_schema_max_digest_sample_age;
|
