SET @start_global_value = @@global.log_warnings;
SELECT @start_global_value;
@start_global_value
1
'#--------------------FN_DYNVARS_067_01-------------------------#'
SET @@global.log_warnings = 100;
SET @@global.log_warnings = DEFAULT;
SELECT @@global.log_warnings;
@@global.log_warnings
1
'#--------------------FN_DYNVARS_067_02-------------------------#'
SET @@global.log_warnings = DEFAULT;
SELECT @@global.log_warnings = 1;
@@global.log_warnings = 1
1
'#--------------------FN_DYNVARS_067_03-------------------------#'
SET @@global.log_warnings = 0;
SELECT @@global.log_warnings;
@@global.log_warnings
0
SET @@global.log_warnings = 1;
SELECT @@global.log_warnings;
@@global.log_warnings
1
SET @@global.log_warnings = 60020;
SELECT @@global.log_warnings;
@@global.log_warnings
60020
SET @@global.log_warnings = 65535;
SELECT @@global.log_warnings;
@@global.log_warnings
65535
SET @@global.log_warnings = 65536;
SELECT @@global.log_warnings;
@@global.log_warnings
65536
'#------------------FN_DYNVARS_067_04-----------------------#'
SET @@global.log_warnings = 100000000000;
SELECT @@global.log_warnings;
@@global.log_warnings
100000000000
SET @@global.log_warnings = -1024;
Warnings:
Warning	1292	Truncated incorrect log_warnings value: '-1024'
SELECT @@global.log_warnings;
@@global.log_warnings
0
SET @@global.log_warnings = 65530.34;
ERROR 42000: Incorrect argument type to variable 'log_warnings'
SELECT @@global.log_warnings;
@@global.log_warnings
0
SET @@global.log_warnings = test;
ERROR 42000: Incorrect argument type to variable 'log_warnings'
SELECT @@global.log_warnings;
@@global.log_warnings
0
'#------------------FN_DYNVARS_067_05-----------------------#'
SELECT @@global.log_warnings = VARIABLE_VALUE 
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
WHERE VARIABLE_NAME='log_warnings';
@@global.log_warnings = VARIABLE_VALUE
1
'#------------------FN_DYNVARS_067_06-----------------------#'
SET @@global.log_warnings = TRUE;
SELECT @@global.log_warnings;
@@global.log_warnings
1
SET @@global.log_warnings = FALSE;
SELECT @@global.log_warnings;
@@global.log_warnings
0
'#---------------------FN_DYNVARS_067_07----------------------#'
SET @@global.log_warnings = 10;
SELECT @@log_warnings = @@global.log_warnings;
@@log_warnings = @@global.log_warnings
1
SET @@global.log_warnings = @start_global_value;
SELECT @@global.log_warnings;
@@global.log_warnings
1
