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
|
create or replace table t1(
XNo int unsigned,
sys_start SYS_DATATYPE as row start invisible,
sys_end SYS_DATATYPE as row end invisible,
period for system_time (sys_start, sys_end))
with system versioning;
insert into t1(XNo) values(0);
insert into t1(XNo) values(1);
insert into t1(XNo) values(2);
insert into t1(XNo) values(3);
insert into t1(XNo) values(4);
insert into t1(XNo) values(5);
insert into t1(XNo) values(6);
insert into t1(XNo) values(7);
insert into t1(XNo) values(8);
insert into t1(XNo) values(9);
select XNo, sys_end < MAXVAL from t1 for system_time all;
XNo sys_end < MAXVAL
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
delete from t1 where XNo = 0;
delete from t1 where XNo = 1;
delete from t1 where XNo > 5;
create view vt1 as select XNo from t1;
select XNo as XNo_vt1 from vt1;
XNo_vt1
2
3
4
5
delete from vt1 where XNo = 3;
select XNo as XNo_vt1 from vt1;
XNo_vt1
2
4
5
drop view vt1;
drop table t1;
create or replace table t1(
x int,
sys_start SYS_DATATYPE as row start invisible,
sys_end SYS_DATATYPE as row end invisible,
period for system_time (sys_start, sys_end))
with system versioning;
insert into t1(x) values (1);
select sys_start into @sys_start from t1;
delete from t1;
select * from t1;
x
select x = 1 as A, sys_start = @sys_start as B, sys_end > sys_start as C from t1 for system_time all;
A B C
1 1 1
drop table t1;
create or replace table t1(
x int,
y int,
sys_start SYS_DATATYPE as row start invisible,
sys_end SYS_DATATYPE as row end invisible,
period for system_time (sys_start, sys_end))
with system versioning;
create or replace table t2 like t1;
insert into t1(x, y) values (1, 1), (2, 2), (3, 3), (14, 4);
insert into t2(x, y) values (11, 1), (12, 2), (13, 32), (14, 4);
delete t1, t2 from t1 join t2 where t1.y = 3 and t2.y = 32;
select x as t1_x from t1;
t1_x
1
2
14
select x as t2_x from t2;
t2_x
11
12
14
delete t1, t2 from t1 join t2 where t1.x = t2.x;
select x as t1_x from t1;
t1_x
1
2
select x as t2_x from t2;
t2_x
11
12
select x as t1_x_all from t1 for system_time all;
t1_x_all
1
2
3
14
select x as t2_x_all from t2 for system_time all;
t2_x_all
11
12
13
14
drop table t1;
drop table t2;
# Basic + delete from view
# Check sys_start, sys_end
# Multi-delete
# Update + delete
create or replace table t1 (x int) with system versioning;
insert into t1 values (1);
update t1 set x= 2;
delete from t1;
select x from t1 for system_time all;
x
2
1
drop table t1;
|
