create database if not exists events_test;
use events_test;
drop event if exists event1;
Warnings:
Note	1305	Event event1 does not exist
create event event1 on schedule every 15 minute starts now() ends date_add(now(), interval 5 hour) DO begin end;
alter event event1 rename to event2 enable;
alter event event2 disable;
alter event event2 enable;
alter event event2 on completion not preserve;
alter event event2 on schedule every 1 year on completion preserve rename to event3 comment "new comment" do begin select 1; end__
alter event event3 rename to event2;
drop event event2;
create event event2 on schedule every 2 second starts now() ends date_add(now(), interval 5 hour) comment "some" DO begin end;
drop event event2;
create event e_43 on schedule every 1 second do set @a = 5;
set global event_scheduler = 1;
alter event e_43 do alter event e_43 do set @a = 4;
select db, name, body, status, interval_field, interval_value from mysql.event;
db	name	body	status	interval_field	interval_value
events_test	e_43	 set @a = 4	ENABLED	SECOND	1
drop event e_43;
set global event_scheduler = 0;
create table t_event3 (a int, b float);
drop event if exists event3;
Warnings:
Note	1305	Event event3 does not exist
create event event3 on schedule every 50 + 10 minute starts date_add("20100101", interval 5 minute) ends date_add("20151010", interval 5 day) comment "portokala_comment" DO insert into t_event3 values (unix_timestamp(), rand());
set max_allowed_packet=128000000;
select count(*) from t_event3;
count(*)
0
drop event event3;
drop table t_event3;
create event one_event on schedule every 10 second do select 123;
SHOW EVENTS;
Db	Name	Definer	Type	Execute at	Interval value	Interval field	Starts	Ends	Status
events_test	one_event	root@localhost	RECURRING	NULL	10	INTERVAL_SECOND	#	#	ENABLED
SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_TYPE, EXECUTE_AT, INTERVAL_VALUE, INTERVAL_FIELD, STATUS,ON_COMPLETION, EVENT_COMMENT from information_schema.events;
EVENT_CATALOG	EVENT_SCHEMA	EVENT_NAME	DEFINER	EVENT_BODY	EVENT_TYPE	EXECUTE_AT	INTERVAL_VALUE	INTERVAL_FIELD	STATUS	ON_COMPLETION	EVENT_COMMENT
NULL	events_test	one_event	root@localhost	 select 123	RECURRING	NULL	10	INTERVAL_SECOND	ENABLED	NOT PRESERVE	
CREATE DATABASE events_test2;
CREATE USER ev_test@localhost;
GRANT ALL ON events_test.* to ev_test@localhost;
GRANT ALL on events_test2.* to ev_test@localhost;
REVOKE EVENT ON events_test2.* FROM ev_test@localhost;
REVOKE PROCESS on *.* from ev_test@localhost;
select "NEW CONNECTION";
NEW CONNECTION
NEW CONNECTION
SELECT USER(), DATABASE();
USER()	DATABASE()
ev_test@localhost	events_test2
SHOW GRANTS;
Grants for ev_test@localhost
GRANT USAGE ON *.* TO 'ev_test'@'localhost'
GRANT ALL PRIVILEGES ON `events_test`.* TO 'ev_test'@'localhost'
GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, REFERENCES, INDEX, ALTER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE ON `events_test2`.* TO 'ev_test'@'localhost'
"Here comes an error:";
SHOW EVENTS;
ERROR 42000: Access denied for user 'ev_test'@'localhost' to database 'events_test2'
USE events_test;
"Now the list should be empty:";
SHOW EVENTS;
Db	Name	Definer	Type	Execute at	Interval value	Interval field	Starts	Ends	Status
select concat("Let's create some new events from the name of ",user());
concat("Let's create some new events from the name of ",user())
Let's create some new events from the name of ev_test@localhost
create event one_event on schedule every 20 second do select 123;
create event two_event on schedule every 20 second on completion not preserve comment "two event" do select 123;
create event three_event on schedule every 20 second on completion preserve comment "three event" do select 123;
"Now we should see 3 events:";
SHOW EVENTS;
Db	Name	Definer	Type	Execute at	Interval value	Interval field	Starts	Ends	Status
events_test	one_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
events_test	three_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
events_test	two_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
"This should show us only 3 events:";
SHOW FULL EVENTS;
Db	Name	Definer	Type	Execute at	Interval value	Interval field	Starts	Ends	Status
events_test	one_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
events_test	three_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
events_test	two_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
"This should show us only 2 events:";
SHOW FULL EVENTS LIKE 't%event';
Db	Name	Definer	Type	Execute at	Interval value	Interval field	Starts	Ends	Status
events_test	three_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
events_test	two_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
"This should show us no events:";
SHOW FULL EVENTS FROM test LIKE '%';
Db	Name	Definer	Type	Execute at	Interval value	Interval field	Starts	Ends	Status
DROP DATABASE events_test2;
"should see 1 event:";
SHOW EVENTS;
Db	Name	Definer	Type	Execute at	Interval value	Interval field	Starts	Ends	Status
events_test	one_event	root@localhost	RECURRING	NULL	10	INTERVAL_SECOND	#	#	ENABLED
"we should see 4 events now:";
SHOW FULL EVENTS;
Db	Name	Definer	Type	Execute at	Interval value	Interval field	Starts	Ends	Status
events_test	one_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
events_test	three_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
events_test	two_event	ev_test@localhost	RECURRING	NULL	20	INTERVAL_SECOND	#	#	ENABLED
events_test	one_event	root@localhost	RECURRING	NULL	10	INTERVAL_SECOND	#	#	ENABLED
SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_TYPE, EXECUTE_AT, INTERVAL_VALUE, INTERVAL_FIELD, STATUS,ON_COMPLETION, EVENT_COMMENT from information_schema.events;
EVENT_CATALOG	EVENT_SCHEMA	EVENT_NAME	DEFINER	EVENT_BODY	EVENT_TYPE	EXECUTE_AT	INTERVAL_VALUE	INTERVAL_FIELD	STATUS	ON_COMPLETION	EVENT_COMMENT
NULL	events_test	one_event	ev_test@localhost	 select 123	RECURRING	NULL	20	INTERVAL_SECOND	ENABLED	NOT PRESERVE	
NULL	events_test	three_event	ev_test@localhost	 select 123	RECURRING	NULL	20	INTERVAL_SECOND	ENABLED	PRESERVE	three event
NULL	events_test	two_event	ev_test@localhost	 select 123	RECURRING	NULL	20	INTERVAL_SECOND	ENABLED	NOT PRESERVE	two event
NULL	events_test	one_event	root@localhost	 select 123	RECURRING	NULL	10	INTERVAL_SECOND	ENABLED	NOT PRESERVE	
drop event one_event;
drop event two_event;
drop event three_event;
drop user ev_test@localhost;
drop event one_event;
"Sleep a bit so the server closes the second connection"
create event e_26 on schedule at '2017-01-01 00:00:00' disable do set @a = 5;
select db, name, body, definer, convert_tz(execute_at, 'UTC', 'SYSTEM'), on_completion from mysql.event;
db	name	body	definer	convert_tz(execute_at, 'UTC', 'SYSTEM')	on_completion
events_test	e_26	 set @a = 5	root@localhost	2017-01-01 00:00:00	DROP
drop event e_26;
create event e_26 on schedule at NULL disabled do set @a = 5;
ERROR HY000: Incorrect AT value: 'NULL'
create event e_26 on schedule at 'definitely not a datetime' disabled do set @a = 5;
ERROR HY000: Incorrect AT value: 'definitely not a datetime'
set names utf8;
create event задачка on schedule every 123 minute starts now() ends now() + interval 1 month do select 1;
drop event задачка;
set event_scheduler=0;
ERROR HY000: Variable 'event_scheduler' is a GLOBAL variable and should be set with SET GLOBAL
set global event_scheduler=2;
ERROR 42000: Variable 'event_scheduler' can't be set to the value of '2'
"DISABLE the scheduler. Testing that it does not work when the variable is 0"
set global event_scheduler=0;
select definer, name, db from mysql.event;
definer	name	db
select get_lock("test_lock1", 20);
get_lock("test_lock1", 20)
1
create event закачка on schedule every 10 hour do select get_lock("test_lock1", 20);
"Should return 1 row"
select definer, name, db from mysql.event;
definer	name	db
root@localhost	закачка	events_test
"Should be only 1 process"
show processlist;
Id	User	Host	db	Command	Time	State	Info
#	root	localhost	events_test	Query	#	NULL	show processlist
select release_lock("test_lock1");
release_lock("test_lock1")
1
drop event закачка;
"Should have 0 events"
select count(*) from mysql.event;
count(*)
0
"ENABLE the scheduler and get a lock"
set global event_scheduler=1;
select get_lock("test_lock2", 20);
get_lock("test_lock2", 20)
1
"Create an event which tries to acquire a mutex. The event locks on the mutex"
create event закачка on schedule every 10 hour do select get_lock("test_lock2", 20);
"Let some time pass to the event starts"
"Should have only 3 processes: the scheduler, our conn and the locked event"
show processlist;
Id	User	Host	db	Command	Time	State	Info
#	root	localhost	events_test	Query	#	NULL	show processlist
#	event_scheduler		NULL	Connect	#	Sleeping	NULL
#	root		events_test	Connect	#	User lock	select get_lock("test_lock2", 20)
"Release the mutex, the event worker should finish."
select release_lock("test_lock2");
release_lock("test_lock2")
1
drop event закачка;
set global event_scheduler=1;
select get_lock("test_lock2_1", 20);
get_lock("test_lock2_1", 20)
1
create event закачка21 on schedule every 10 hour do select get_lock("test_lock2_1", 20);
"Should see 2 processes, one locked on get_lock("
"Shutting down the scheduler, it should wait for the running event"
set global event_scheduler=0;
"Should have only 3 processes: the scheduler, our conn and the locked event"
show processlist;
Id	User	Host	db	Command	Time	State	Info
#	root	localhost	events_test	Query	#	NULL	show processlist
#	event_scheduler		NULL	Connect	#	Sleeping	NULL
#	root		events_test	Connect	#	User lock	select get_lock("test_lock2_1", 20)
"Release the lock so the child process should finish. Hence the scheduler also"
select release_lock("test_lock2_1");
release_lock("test_lock2_1")
1
"Should have only our process now:"
show processlist;
Id	User	Host	db	Command	Time	State	Info
#	root	localhost	events_test	Query	#	NULL	show processlist
drop event закачка21;
drop database events_test;