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|
####################################################################
# START OF transaction_read_only TESTS #
####################################################################
#############################################################
# Save initial value #
#############################################################
SET @start_global_value = @@global.transaction_read_only;
SELECT @start_global_value;
@start_global_value
0
SET @start_session_value = @@session.transaction_read_only;
SELECT @start_session_value;
@start_session_value
0
########################################################################
# Display the DEFAULT value of transaction_read_only #
########################################################################
SET @@global.transaction_read_only = ON;
SET @@global.transaction_read_only = DEFAULT;
SELECT @@global.transaction_read_only;
@@global.transaction_read_only
0
SET @@session.transaction_read_only = ON;
SET @@session.transaction_read_only = DEFAULT;
SELECT @@session.transaction_read_only;
@@session.transaction_read_only
0
###############################################################################
# Change the value of transaction_read_only to a valid value for GLOBAL Scope #
###############################################################################
SET @@global.transaction_read_only = ON;
SELECT @@global.transaction_read_only;
@@global.transaction_read_only
1
SET @@global.transaction_read_only = OFF;
SELECT @@global.transaction_read_only;
@@global.transaction_read_only
0
SET @@global.transaction_read_only = 0;
SELECT @@global.transaction_read_only;
@@global.transaction_read_only
0
SET @@global.transaction_read_only = 1;
SELECT @@global.transaction_read_only;
@@global.transaction_read_only
1
SET @@global.transaction_read_only = TRUE;
SELECT @@global.transaction_read_only;
@@global.transaction_read_only
1
SET @@global.transaction_read_only = FALSE;
SELECT @@global.transaction_read_only;
@@global.transaction_read_only
0
################################################################################
# Change the value of transaction_read_only to a valid value for SESSION Scope #
################################################################################
SET @@session.transaction_read_only = ON;
SELECT @@session.transaction_read_only;
@@session.transaction_read_only
1
SET @@session.transaction_read_only = OFF;
SELECT @@session.transaction_read_only;
@@session.transaction_read_only
0
SET @@session.transaction_read_only = 0;
SELECT @@session.transaction_read_only;
@@session.transaction_read_only
0
SET @@session.transaction_read_only = 1;
SELECT @@session.transaction_read_only;
@@session.transaction_read_only
1
SET @@session.transaction_read_only = TRUE;
SELECT @@session.transaction_read_only;
@@session.transaction_read_only
1
SET @@session.transaction_read_only = FALSE;
SELECT @@session.transaction_read_only;
@@session.transaction_read_only
0
#################################################################
# Change the value of transaction_read_only to an invalid value #
#################################################################
SET @@global.transaction_read_only = 'ONN';
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of 'ONN'
SET @@global.transaction_read_only = "OFFF";
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of 'OFFF'
SET @@global.transaction_read_only = TTRUE;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of 'TTRUE'
SET @@global.transaction_read_only = FELSE;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of 'FELSE'
SET @@global.transaction_read_only = -1024;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of '-1024'
SET @@global.transaction_read_only = 65536;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of '65536'
SET @@global.transaction_read_only = 65530.34;
ERROR 42000: Incorrect argument type to variable 'transaction_read_only'
SET @@global.transaction_read_only = test;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of 'test'
SET @@session.transaction_read_only = ONN;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of 'ONN'
SET @@session.transaction_read_only = ONF;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of 'ONF'
SET @@session.transaction_read_only = OF;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of 'OF'
SET @@session.transaction_read_only = 'OFN';
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of 'OFN'
SET @@session.transaction_read_only = -2;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of '-2'
SET @@session.transaction_read_only = 65530.34;
ERROR 42000: Incorrect argument type to variable 'transaction_read_only'
SET @@session.transaction_read_only = 65550;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of '65550'
SET @@session.transaction_read_only = test;
ERROR 42000: Variable 'transaction_read_only' can't be set to the value of 'test'
SELECT @@session.transaction_read_only;
@@session.transaction_read_only
0
####################################################################
# Check if the value in GLOBAL Table matches value in variable #
####################################################################
SELECT IF(@@global.transaction_read_only, "ON", "OFF") = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='transaction_read_only';
IF(@@global.transaction_read_only, "ON", "OFF") = VARIABLE_VALUE
1
####################################################################
# Check if the value in SESSION Table matches value in variable #
####################################################################
SELECT IF(@@session.transaction_read_only, "ON", "OFF") = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.SESSION_VARIABLES
WHERE VARIABLE_NAME='transaction_read_only';
IF(@@session.transaction_read_only, "ON", "OFF") = VARIABLE_VALUE
1
###############################################################################
# Check if accessing variable with and without GLOBAL point to same variable #
###############################################################################
SET @@transaction_read_only = OFF;
SET @@global.transaction_read_only = ON;
SELECT @@transaction_read_only = @@global.transaction_read_only;
@@transaction_read_only = @@global.transaction_read_only
0
##############################################################################
# Check if accessing variable with SESSION,LOCAL and without SCOPE points #
# to same session variable #
##############################################################################
SET @@transaction_read_only = ON;
SELECT @@transaction_read_only = @@local.transaction_read_only;
@@transaction_read_only = @@local.transaction_read_only
1
SELECT @@local.transaction_read_only = @@session.transaction_read_only;
@@local.transaction_read_only = @@session.transaction_read_only
1
###############################################################################
# Check if transaction_read_only can be accessed with and without @@ sign #
###############################################################################
# @@session is synonym for SESSION
SET @@session.transaction_read_only= 0;
# Without modifier, SET changes session variable
SET transaction_read_only = 1;
SELECT @@transaction_read_only;
@@transaction_read_only
1
# name1.name2 refers to database_name.table_name
SELECT session.transaction_read_only;
ERROR 42S02: Unknown table 'session' in field list
####################################
# Restore initial value #
####################################
SET @@global.transaction_read_only = @start_global_value;
SELECT @@global.transaction_read_only;
@@global.transaction_read_only
0
SET @@session.transaction_read_only = @start_session_value;
SELECT @@session.transaction_read_only;
@@session.transaction_read_only
0
#########################################################
# END OF transaction_read_only TESTS #
#########################################################
|
