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
|
--source include/have_innodb.inc
--source include/have_debug.inc
create table t1 (
rowid int,
f1 int,
f2 int,
key i1 (f1, f2),
key i2 (f2)) engine=innodb;
show create table t1;
insert into `t1` (rowid, f1, f2) values (1, 1, 10), (2, 1, NULL);
connect (a,localhost,root,,);
connect (b,localhost,root,,);
connection a;
start transaction with consistent snapshot;
connection b;
start transaction;
update t1 set f2 = 4 where f1 = 1 and f2 is null;
-- echo (b) Number of rows updated:
--disable_ps2_protocol
select row_count();
--enable_ps2_protocol
insert into t1 values (3, 1, null);
-- echo (b) After update and insert query.
select rowid, f1, f2 from t1;
commit;
connection a;
-- echo (a) Before the update statement is executed.
select rowid, f1, f2 from t1;
SET SESSION debug_dbug="+d,bug14007649";
update t1 set f2 = 6 where f1 = 1 and f2 is null;
-- echo (a) Number of rows updated:
--disable_ps2_protocol
select row_count();
--enable_ps2_protocol
-- echo (a) After the update statement is executed.
select rowid, f1, f2 from t1;
commit;
--echo "The trx with consistent snapshot ended."
select rowid, f1, f2 from t1;
connection default;
disconnect a;
disconnect b;
drop table t1;
|
