1SET @start_value = @@global.slow_query_log_file;
2'#---------------------FN_DYNVARS_004_01-------------------------#'
3SET @@global.slow_query_log_file = DEFAULT;
4SET @a=concat(left(@@hostname, instr(concat(@@hostname, '.'), '.')-1), '-slow.log');
5SELECT RIGHT(@@global.slow_query_log_file, length(@a)) = @a;
6RIGHT(@@global.slow_query_log_file, length(@a)) = @a
71
8'#--------------------FN_DYNVARS_004_02------------------------#'
9SET @@global.slow_query_log_file = mytest.log;
10ERROR 42000: Incorrect argument type to variable 'slow_query_log_file'
11SET @@global.slow_query_log_file = 12;
12ERROR 42000: Incorrect argument type to variable 'slow_query_log_file'
13'#----------------------FN_DYNVARS_004_03------------------------#'
14SELECT @@global.slow_query_log_file = VARIABLE_VALUE
15FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
16WHERE VARIABLE_NAME='slow_query_log_file';
17@@global.slow_query_log_file = VARIABLE_VALUE
181
19SET @@global.slow_query_log_file= @start_value;
20