1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
select * from information_schema.periods;
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PERIOD START_COLUMN_NAME END_COLUMN_NAME
Warnings:
Warning 1286 Unknown storage engine 'InnoDB'
Warning 1286 Unknown storage engine 'InnoDB'
Warning 1286 Unknown storage engine 'InnoDB'
create or replace table t1 (id int primary key, s timestamp(6), e timestamp(6),
period for mytime(s,e));
create or replace table t2 (id int primary key, s timestamp(6), e timestamp(6),
period for mytime(s,e),
vs timestamp(6) as row start,
ve timestamp(6) as row end,
period for system_time(vs, ve))
with system versioning;
show columns from t1;
Field Type Null Key Default Extra
id int(11) NO PRI NULL
s timestamp(6) NO NULL
e timestamp(6) NO NULL
select * from information_schema.periods where table_schema = 'test';
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PERIOD START_COLUMN_NAME END_COLUMN_NAME
def test t1 mytime s e
def test t2 SYSTEM_TIME vs ve
def test t2 mytime s e
create user periods_hidden@localhost;
grant create on test.nonexist to periods_hidden@localhost;
connect chopped,localhost,periods_hidden,,test;
select * from information_schema.periods where table_schema = 'test';
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PERIOD START_COLUMN_NAME END_COLUMN_NAME
connection default;
grant select(id) on test.t1 to periods_hidden@localhost;
connection chopped;
connection default;
revoke select(id) on test.t1 from periods_hidden@localhost;
connection chopped;
connection default;
grant update(id) on test.t1 to periods_hidden@localhost;
connection chopped;
select * from information_schema.periods where table_schema = 'test';
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PERIOD START_COLUMN_NAME END_COLUMN_NAME
def test t1 mytime NULL NULL
connection default;
grant select(s) on test.t1 to periods_hidden@localhost;
connection chopped;
select * from information_schema.periods where table_schema = 'test';
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PERIOD START_COLUMN_NAME END_COLUMN_NAME
def test t1 mytime s NULL
connection default;
grant select(e) on test.t2 to periods_hidden@localhost;
connection chopped;
select * from information_schema.periods where table_schema = 'test';
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PERIOD START_COLUMN_NAME END_COLUMN_NAME
def test t1 mytime s NULL
def test t2 SYSTEM_TIME NULL NULL
def test t2 mytime NULL e
connection default;
grant update on test.t2 to periods_hidden@localhost;
connection chopped;
select * from information_schema.periods where table_schema = 'test';
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PERIOD START_COLUMN_NAME END_COLUMN_NAME
def test t1 mytime s NULL
def test t2 SYSTEM_TIME vs ve
def test t2 mytime s e
connection default;
drop tables t1, t2;
# MDEV-32503 Queries from KEY_PERIOD_USAGE don't obey case-sensitivity
create table t (a int, b date, c date, period for app(b,c),
unique idx(a, app without overlaps));
set names latin1 collate latin1_general_cs;
select table_name from information_schema.periods where table_schema = 'TEST';
table_name
select table_name from information_schema.key_period_usage where table_schema = 'TEST';
table_name
set names latin1 collate latin1_general_ci;
select table_name from information_schema.periods where table_schema = 'TEST';
table_name
select table_name from information_schema.key_period_usage where table_schema = 'TEST';
table_name
# [DUPLICATE] MDEV-32504 Search by I_S.KEY_PERIOD_USAGE.CONSTRAINT_NAME
# does not work
select constraint_name from information_schema.key_period_usage where table_name = 't';
constraint_name
idx
select constraint_name from information_schema.key_period_usage where constraint_name = 'idx';
constraint_name
idx
drop table t;
# MDEV-32501 KEY_PERIOD_USAGE reveals information to unprivileged user
create table t (a int, b date, c date, f int, period for app(b, c),
primary key(a, app without overlaps));
grant select (f) on t to periods_hidden@localhost;
connection chopped;
select period_name from information_schema.key_period_usage where table_name = 't';
period_name
connection default;
grant update (f) on t to periods_hidden@localhost;
connection chopped;
select 'can be seen', constraint_name, period_name from information_schema.key_period_usage where table_name = 't';
can be seen constraint_name period_name
can be seen PRIMARY app
connection default;
revoke update (f) on t from periods_hidden@localhost;
connection chopped;
update t set f = 1;
ERROR 42000: UPDATE command denied to user 'periods_hidden'@'localhost' for table `test`.`t`
select period_name from information_schema.key_period_usage where table_name = 't';
period_name
connection default;
grant alter on t to periods_hidden@localhost;
connection chopped;
select 'can be seen', constraint_name, period_name from information_schema.key_period_usage where table_name = 't';
can be seen constraint_name period_name
can be seen PRIMARY app
connection default;
drop table t;
disconnect chopped;
connection default;
drop user periods_hidden@localhost;
|
