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set @old_global_general_log=@@global.general_log;
set global general_log=OFF;
create user testuser@localhost;
grant select on *.* to testuser@localhost;
install plugin audit_null soname 'adt_null';
select 1;
1
1
select foobar;
ERROR 42S22: Unknown column 'foobar' in 'SELECT'
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
Audit_null_general_warning 1
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 22
Audit_null_general_error 1
Audit_null_general_log 7
Audit_null_general_result 5
Audit_null_general_warning 1
create table t1 (a int);
insert t1 values (1), (2);
select * from t1;
a
1
2
rename table t1 to t2;
alter table t2 add column b int;
create definer=testuser@localhost view v1 as select t2.a+1, t2_copy.a+2 from t2, t2 as t2_copy;
select * from v1;
t2.a+1 t2_copy.a+2
2 3
3 3
2 4
3 4
drop view v1;
create temporary table t2 (a date);
insert t2 values ('2020-10-09');
select * from t2;
a
2020-10-09
alter table t2 add column b int;
drop table t2;
explain select distinct * from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using temporary
select distinct * from t2;
a b
1 NULL
2 NULL
drop table t2;
uninstall plugin audit_null;
Warnings:
Warning 1620 Plugin is busy and will be uninstalled on shutdown
drop procedure au1;
drop user testuser@localhost;
set global general_log=@old_global_general_log;
root[root] @ localhost [] >> select 1
root[root] @ localhost [] >> select foobar
root[root] @ localhost [] >> show status like 'audit_null%'
root[root] @ localhost [] >> create procedure au1(x char(16)) select concat("test1", x)
root[root] @ localhost [] mysql.proc : write
root[root] @ localhost [] >> call au1("-12")
root[root] @ localhost [] mysql.proc : read
root[root] @ localhost [] >> select concat("test1", NAME_CONST('x',_utf8mb4'-12' COLLATE 'utf8mb4_uca1400_ai_ci'))
root[root] @ localhost [] >> show status like 'audit_null%'
root[root] @ localhost [] >> create table t1 (a int)
root[root] @ localhost [] test.t1 : create
root[root] @ localhost [] >> insert t1 values (1), (2)
root[root] @ localhost [] test.t1 : write
root[root] @ localhost [] mysql.table_stats : read
root[root] @ localhost [] mysql.column_stats : read
root[root] @ localhost [] mysql.index_stats : read
root[root] @ localhost [] >> select * from t1
root[root] @ localhost [] test.t1 : read
root[root] @ localhost [] >> rename table t1 to t2
root[root] @ localhost [] test.t1 : rename to test.t2
root[root] @ localhost [] mysql.table_stats : write
root[root] @ localhost [] mysql.column_stats : write
root[root] @ localhost [] mysql.index_stats : write
root[root] @ localhost [] >> alter table t2 add column b int
root[root] @ localhost [] test.t2 : alter
root[root] @ localhost [] test.t2 : read
root[root] @ localhost [] >> create definer=testuser@localhost view v1 as select t2.a+1, t2_copy.a+2 from t2, t2 as t2_copy
root[root] @ localhost [] test.t2 : read
root[root] @ localhost [] test.t2 : read
root[root] @ localhost [] >> select * from v1
root[root] @ localhost [] test.t2 : read
root[root] @ localhost [] test.t2 : read
root[root] @ localhost [] mysql.table_stats : read
root[root] @ localhost [] mysql.column_stats : read
root[root] @ localhost [] mysql.index_stats : read
root[root] @ localhost [] >> drop view v1
root[root] @ localhost [] >> create temporary table t2 (a date)
root[root] @ localhost [] >> insert t2 values ('2020-10-09')
root[root] @ localhost [] >> select * from t2
root[root] @ localhost [] >> alter table t2 add column b int
root[root] @ localhost [] >> drop table t2
root[root] @ localhost [] >> explain select distinct * from t2
root[root] @ localhost [] test.t2 : read
root[root] @ localhost [] >> select distinct * from t2
root[root] @ localhost [] test.t2 : read
root[root] @ localhost [] >> drop table t2
root[root] @ localhost [] mysql.table_stats : write
root[root] @ localhost [] mysql.column_stats : write
root[root] @ localhost [] mysql.index_stats : write
root[root] @ localhost [] test.t2 : drop
root[root] @ localhost [] >> uninstall plugin audit_null
root[root] @ localhost [] mysql.plugin : write
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