#
# Variable name : session_track_system_variables
# Scope         : Global & Session
#
# Global - default
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
autocommit,character_set_client,character_set_connection,character_set_results,time_zone
# Session - default
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
autocommit,character_set_client,character_set_connection,character_set_results,time_zone

# via INFORMATION_SCHEMA.GLOBAL_VARIABLES
SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME LIKE 'session_track_system_variables' ORDER BY VARIABLE_NAME;
VARIABLE_NAME	VARIABLE_VALUE
SESSION_TRACK_SYSTEM_VARIABLES	autocommit,character_set_client,character_set_connection,character_set_results,time_zone
# via INFORMATION_SCHEMA.SESSION_VARIABLES
SELECT * FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME LIKE 'session_track_system_variables' ORDER BY VARIABLE_NAME;
VARIABLE_NAME	VARIABLE_VALUE
SESSION_TRACK_SYSTEM_VARIABLES	autocommit,character_set_client,character_set_connection,character_set_results,time_zone
SET @global_saved_tmp =  @@global.session_track_system_variables;

# Altering global variable's value
SET @@global.session_track_system_variables='autocommit';
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
autocommit
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
autocommit,character_set_client,character_set_connection,character_set_results,time_zone

# Altering session variable's value
SET @@session.session_track_system_variables='autocommit';
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
autocommit
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
autocommit

# Variables' values in a new session.
connect  con1,"127.0.0.1",root,,test,$MASTER_MYPORT,;
# Global - expect "autocommit"
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
autocommit

# Session - expect "autocommit"
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
autocommit

# Switching to the default connection.
connection default;
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
autocommit
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
autocommit

# Test if DEFAULT is working as expected.
SET @@global.session_track_system_variables = DEFAULT;
SET @@session.session_track_system_variables = DEFAULT;

SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
autocommit,character_set_client,character_set_connection,character_set_results,time_zone
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
autocommit,character_set_client,character_set_connection,character_set_results,time_zone

# Variables' values in a new session (con2).
connect  con2,"127.0.0.1",root,,test,$MASTER_MYPORT,;
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
autocommit,character_set_client,character_set_connection,character_set_results,time_zone
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
autocommit,character_set_client,character_set_connection,character_set_results,time_zone

# Altering session should not affect global.
SET @@session.session_track_system_variables = 'sql_mode';
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
autocommit,character_set_client,character_set_connection,character_set_results,time_zone
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
sql_mode

# Variables' values in a new session (con3).
connect  con3,"127.0.0.1",root,,test,$MASTER_MYPORT,;
# Altering global should not affect session.
SET @@global.session_track_system_variables = 'sql_mode';
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
sql_mode
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
autocommit,character_set_client,character_set_connection,character_set_results,time_zone

# Switching to the default connection.
connection default;
# Testing NULL
SET @@global.session_track_system_variables = NULL;
ERROR 42000: Variable 'session_track_system_variables' can't be set to the value of 'NULL'
SET @@session.session_track_system_variables = NULL;
ERROR 42000: Variable 'session_track_system_variables' can't be set to the value of 'NULL'
# testing with duplicate entries.
SET @@global.session_track_system_variables= "time_zone";
SET @@session.session_track_system_variables= "time_zone";
SET @@global.session_track_system_variables= "sql_mode,sql_mode";
SET @@session.session_track_system_variables= "sql_mode,sql_mode";
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
sql_mode
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
sql_mode

# testing ordering
SET @@global.session_track_system_variables= "time_zone,sql_mode";
SET @@session.session_track_system_variables= "time_zone,sql_mode";
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
sql_mode,time_zone
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
sql_mode,time_zone

# special values
SET @@global.session_track_system_variables= "*";
SET @@session.session_track_system_variables= "*";
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables
*
SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables
*
SET @@global.session_track_system_variables= "";
SET @@session.session_track_system_variables= "";
SELECT @@global.session_track_system_variables;
@@global.session_track_system_variables

SELECT @@session.session_track_system_variables;
@@session.session_track_system_variables


# MDEV-22524 SIGABRT in safe_mutex_unlock with session_track_system_variables and max_relay_log_size.
SET SESSION session_track_system_variables="sql_slave_skip_counter", sql_slave_skip_counter= 0;
# Restoring the original values.
SET @@global.session_track_system_variables = @global_saved_tmp;
# End of tests.