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SET @start_session_value = @@session.unique_checks;
SELECT @start_session_value;
@start_session_value
1
'#--------------------FN_DYNVARS_005_01-------------------------#'
SET @@session.unique_checks= 1;
SET @@session.unique_checks= DEFAULT;
SELECT @@session.unique_checks;
@@session.unique_checks
1
'#--------------------FN_DYNVARS_005_04-------------------------#'
SET @@session.unique_checks =1;
SELECT @@session.unique_checks;
@@session.unique_checks
1
SET @@session.unique_checks = 0;
SELECT @@session.unique_checks;
@@session.unique_checks
0
SET @@session.unique_checks = True;
SELECT @@session.unique_checks;
@@session.unique_checks
1
SET @@session.unique_checks = False;
SELECT @@session.unique_checks;
@@session.unique_checks
0
SET @@session.unique_checks = "ON";
SELECT @@session.unique_checks;
@@session.unique_checks
1
SET @@session.unique_checks = "OFF";
SELECT @@session.unique_checks;
@@session.unique_checks
0
'#------------------FN_DYNVARS_005_05-----------------------#'
SET @@session.unique_checks = 'No';
ERROR 42000: Variable 'unique_checks' can't be set to the value of 'No'
SET @@session.unique_checks = "yes";
ERROR 42000: Variable 'unique_checks' can't be set to the value of 'yes'
SET @@session.unique_checks = yes;
ERROR 42000: Variable 'unique_checks' can't be set to the value of 'yes'
SET @@session.unique_checks = NO;
ERROR 42000: Variable 'unique_checks' can't be set to the value of 'NO'
SET @@session.unique_checks = "True";
ERROR 42000: Variable 'unique_checks' can't be set to the value of 'True'
SET @@session.unique_checks = "False";
ERROR 42000: Variable 'unique_checks' can't be set to the value of 'False'
SET @@session.unique_checks = "Test";
ERROR 42000: Variable 'unique_checks' can't be set to the value of 'Test'
SET @@session.unique_checks = 'test';
ERROR 42000: Variable 'unique_checks' can't be set to the value of 'test'
SET @@session.unique_checks = 123456789031;
ERROR 42000: Variable 'unique_checks' can't be set to the value of '123456789031'
'#------------------FN_DYNVARS_005_07-----------------------#'
SELECT IF(@@session.unique_checks, "ON", "OFF") = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.SESSION_VARIABLES
WHERE VARIABLE_NAME='unique_checks';
IF(@@session.unique_checks, "ON", "OFF") = VARIABLE_VALUE
1
'#---------------------FN_DYNVARS_001_08----------------------#'
SET @@unique_checks = 1;
SELECT @@unique_checks = @@local.unique_checks;
@@unique_checks = @@local.unique_checks
1
SELECT @@local.unique_checks = @@session.unique_checks;
@@local.unique_checks = @@session.unique_checks
1
'#---------------------FN_DYNVARS_001_09----------------------#'
SET unique_checks = 1027;
ERROR 42000: Variable 'unique_checks' can't be set to the value of '1027'
SELECT @@unique_checks;
@@unique_checks
1
SELECT local.unique_checks;
ERROR 42S02: Unknown table 'local' in field list
SELECT session.unique_checks;
ERROR 42S02: Unknown table 'session' in field list
SELECT unique_checks = @@session.unique_checks;
ERROR 42S22: Unknown column 'unique_checks' in 'field list'
SET @@session.unique_checks = @start_session_value;
SELECT @@session.unique_checks;
@@session.unique_checks
1
|
