set @old_global_general_log=@@global.general_log;
set global general_log=OFF;
install plugin audit_null soname 'adt_null';
select 1;
1
1
select foobar;
ERROR 42S22: Unknown column 'foobar' in 'field list'
show status like 'audit_null%';
Variable_name	Value
Audit_null_called	9
Audit_null_general_error	1
Audit_null_general_log	3
Audit_null_general_result	2
create procedure au1(x char(16)) select concat("test1", x);
call au1("-12");
concat("test1", x)
test1-12
show status like 'audit_null%';
Variable_name	Value
Audit_null_called	19
Audit_null_general_error	1
Audit_null_general_log	7
Audit_null_general_result	5
uninstall plugin audit_null;
Warnings:
Warning	1620	Plugin is busy and will be uninstalled on shutdown
drop procedure au1;
set global general_log=@old_global_general_log;