File: rpl_get_lock.result

package info (click to toggle)
mariadb 1%3A11.8.2-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, trixie
  • size: 765,428 kB
  • sloc: ansic: 2,382,827; cpp: 1,803,532; asm: 378,315; perl: 63,176; sh: 46,496; pascal: 40,776; java: 39,363; yacc: 20,428; python: 19,506; sql: 17,864; xml: 12,463; ruby: 8,544; makefile: 6,059; cs: 5,855; ada: 1,700; lex: 1,193; javascript: 1,039; objc: 80; tcl: 73; awk: 46; php: 22
file content (39 lines) | stat: -rw-r--r-- 1,026 bytes parent folder | download | duplicates (8) 
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
 
include/master-slave.inc
[connection master]
SET GLOBAL LOG_WARNINGS=4;
create table t1(n int);
insert into t1 values(get_lock("lock",2));
disconnect master;
connection master1;
select get_lock("lock",2);
get_lock("lock",2)
1
select release_lock("lock");
release_lock("lock")
1
connection slave;
select get_lock("lock",3);
get_lock("lock",3)
1
select * from t1;
n
1
select is_free_lock("lock"), is_used_lock("lock") = connection_id();
is_free_lock("lock")	is_used_lock("lock") = connection_id()
0	1
explain extended select is_free_lock("lock"), is_used_lock("lock");
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
Warnings:
Note	1003	select is_free_lock('lock') AS `is_free_lock("lock")`,is_used_lock('lock') AS `is_used_lock("lock")`
select is_free_lock("lock2");
is_free_lock("lock2")
1
select is_free_lock(NULL);
is_free_lock(NULL)
NULL
connection master1;
drop table t1;
connection slave;
connection default;
include/rpl_end.inc