mysql_ Record the executed SQL

Be careful ：

         Don't open it easily

         Shut down in time

Check whether the log is open ：

        show variables where Variable_name="general_log";

result OFF Is off ,ON Is off

open ：

set global general_log=on;

        

View log location ：

        show variables where Variable_name="general_log_file";

close ：

        set global general_log=off;