1select (@err_log:=variable_value)*0 from information_schema.global_variables where variable_name="log_error"; 2(@err_log:=variable_value)*0 30 4select instr(@err_log, "mysqld.1.err")>0; 5instr(@err_log, "mysqld.1.err")>0 61 7
1select (@err_log:=variable_value)*0 from information_schema.global_variables where variable_name="log_error"; 2(@err_log:=variable_value)*0 30 4select instr(@err_log, "mysqld.1.err")>0; 5instr(@err_log, "mysqld.1.err")>0 61 7