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#
# Show the session value;
#
SELECT @@session.show_old_temporals;
SHOW SESSION VARIABLES LIKE 'show_old_temporals';
--disable_warnings
SELECT * FROM performance_schema.session_variables WHERE variable_name='show_old_temporals';
--enable_warnings
--echo #Also can be set as a global variable.
SELECT @@global.show_old_temporals;
SHOW GLOBAL VARIABLES LIKE 'show_old_temporals';
--disable_warnings
SELECT * FROM performance_schema.global_variables WHERE variable_name='show_old_temporals';
--enable_warnings
--echo #Test setting the variable to various values.
--echo #Boolean values.
SET SESSION show_old_temporals= ON;
SELECT @@session.show_old_temporals;
SET SESSION show_old_temporals= OFF;
SELECT @@session.show_old_temporals;
SET SESSION show_old_temporals= 1;
SELECT @@session.show_old_temporals;
SET SESSION show_old_temporals= 0;
SELECT @@session.show_old_temporals;
--echo #Test for DEFAULT value.
SET SESSION show_old_temporals= DEFAULT;
SELECT @@session.show_old_temporals;
--echo #Test for invalid value.
--error ER_WRONG_VALUE_FOR_VAR
SET SESSION show_old_temporals= 2;
--echo #Test for setting the session variable
--echo #using different syntax.
SET show_old_temporals= 1;
--echo #Fetches the current session value for the variable.
SELECT @@show_old_temporals;
--echo #cleanup
SET SESSION show_old_temporals= DEFAULT;
--echo #Test setting the global value of the variable.
--echo #Boolean values.
SET GLOBAL show_old_temporals= ON;
SELECT @@global.show_old_temporals;
SET GLOBAL show_old_temporals= OFF;
SELECT @@global.show_old_temporals;
SET GLOBAL show_old_temporals= 1;
SELECT @@global.show_old_temporals;
SET GLOBAL show_old_temporals= 0;
SELECT @@session.show_old_temporals;
--echo #Test for DEFAULT value.
SET GLOBAL show_old_temporals= DEFAULT;
SELECT @@global.show_old_temporals;
--echo #Test for invalid value.
--error ER_WRONG_VALUE_FOR_VAR
SET GLOBAL show_old_temporals= 2;
######################################################################################
# Check if changing session variable throws error without sufficient privileges #
######################################################################################
CREATE USER foo, bar;
GRANT SESSION_VARIABLES_ADMIN ON *.* TO bar;
--let $conn_name = foo_connection
--connect($conn_name, localhost, foo,,,)
SELECT @@session.show_old_temporals;
--error ER_SPECIFIC_ACCESS_DENIED_ERROR
SET @@session.show_old_temporals = 0;
--connection default
disconnect $conn_name;
--let $conn_name = bar_connection
--connect($conn_name, localhost, bar,,,)
SELECT @@session.show_old_temporals;
SET @@session.show_old_temporals = 0;
SELECT @@session.show_old_temporals;
--error ER_SPECIFIC_ACCESS_DENIED_ERROR
SET @@global.show_old_temporals = 0;
--connection default
disconnect $conn_name;
DROP USER foo, bar;
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