create database if not exists events_test; use events_test; CREATE USER pauline@localhost; CREATE DATABASE db_x; GRANT EVENT ON db_x.* TO pauline@localhost; USE db_x; CREATE TABLE x_table(a int); CREATE EVENT e_x1 ON SCHEDULE EVERY 1 SECOND DO DROP DATABASE db_x; CREATE EVENT e_x2 ON SCHEDULE EVERY 1 SECOND DO DROP TABLE x_table; SHOW DATABASES LIKE 'db_x'; Database (db_x) db_x SET GLOBAL event_scheduler=1; SHOW DATABASES LIKE 'db_x'; Database (db_x) db_x SHOW TABLES FROM db_x; Tables_in_db_x x_table SET GLOBAL event_scheduler=0; DROP EVENT e_x1; DROP EVENT e_x2; DROP DATABASE db_x; DROP USER pauline@localhost; USE events_test; SET GLOBAL event_scheduler=0; 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 event_starts_test ON SCHEDULE EVERY 10 SECOND COMMENT "" DO SELECT 1; SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test event_starts_test root@localhost RECURRING NULL 10 SECOND # # ENABLED SELECT starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test'; starts IS NULL ends IS NULL comment 0 1 ALTER EVENT event_starts_test ON SCHEDULE AT '2020-02-02 20:00:02'; SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test event_starts_test root@localhost ONE TIME 2020-02-02 17:00:02 NULL NULL # # ENABLED SELECT starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test'; starts IS NULL ends IS NULL comment 1 1 ALTER EVENT event_starts_test COMMENT "non-empty comment"; SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test event_starts_test root@localhost ONE TIME 2020-02-02 17:00:02 NULL NULL # # ENABLED SELECT starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test'; starts IS NULL ends IS NULL comment 1 1 non-empty comment ALTER EVENT event_starts_test COMMENT ""; SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test event_starts_test root@localhost ONE TIME 2020-02-02 17:00:02 NULL NULL # # ENABLED SELECT starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test'; starts IS NULL ends IS NULL comment 1 1 DROP EVENT event_starts_test; CREATE EVENT event_starts_test ON SCHEDULE EVERY 20 SECOND STARTS '2020-02-02 20:00:02' ENDS '2022-02-02 20:00:02' DO SELECT 2; SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test event_starts_test root@localhost RECURRING NULL 20 SECOND # # ENABLED SELECT starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test'; starts IS NULL ends IS NULL comment 0 0 ALTER EVENT event_starts_test COMMENT "non-empty comment"; SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test event_starts_test root@localhost RECURRING NULL 20 SECOND # # ENABLED SELECT starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test'; starts IS NULL ends IS NULL comment 0 0 non-empty comment ALTER EVENT event_starts_test COMMENT ""; SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test event_starts_test root@localhost RECURRING NULL 20 SECOND # # ENABLED DROP EVENT event_starts_test; 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; "Let's check whether we can use non-qualified names" create table non_qualif(a int); create event non_qualif_ev on schedule every 10 minute do insert into non_qualif values (800219); select * from non_qualif; a 800219 drop event non_qualif_ev; drop table non_qualif; 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; set names utf8; CREATE EVENT root6 ON SCHEDULE EVERY '10:20' MINUTE_SECOND ON COMPLETION PRESERVE ENABLE COMMENT 'some comment' DO select 1; SHOW CREATE EVENT root6; Event sql_mode Create Event root6 CREATE EVENT `events_test`.`root6` ON SCHEDULE EVERY '10:20' MINUTE_SECOND ON COMPLETION PRESERVE ENABLE COMMENT 'some comment' DO select 1 create event root7 on schedule every 2 year do select 1; SHOW CREATE EVENT root7; Event sql_mode Create Event root7 CREATE EVENT `events_test`.`root7` ON SCHEDULE EVERY 2 YEAR ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root8 on schedule every '2:5' year_month do select 1; SHOW CREATE EVENT root8; Event sql_mode Create Event root8 CREATE EVENT `events_test`.`root8` ON SCHEDULE EVERY '2-5' YEAR_MONTH ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root8_1 on schedule every '2:15' year_month do select 1; SHOW CREATE EVENT root8_1; Event sql_mode Create Event root8_1 CREATE EVENT `events_test`.`root8_1` ON SCHEDULE EVERY '3-3' YEAR_MONTH ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root9 on schedule every 2 week ON COMPLETION PRESERVE DISABLE COMMENT 'коментар на кирилица' do select 1; SHOW CREATE EVENT root9; Event sql_mode Create Event root9 CREATE EVENT `events_test`.`root9` ON SCHEDULE EVERY 2 WEEK ON COMPLETION PRESERVE DISABLE COMMENT 'коментар на кирилица' DO select 1 create event root10 on schedule every '20:5' day_hour do select 1; SHOW CREATE EVENT root10; Event sql_mode Create Event root10 CREATE EVENT `events_test`.`root10` ON SCHEDULE EVERY '20 5' DAY_HOUR ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root11 on schedule every '20:25' day_hour do select 1; SHOW CREATE EVENT root11; Event sql_mode Create Event root11 CREATE EVENT `events_test`.`root11` ON SCHEDULE EVERY '21 1' DAY_HOUR ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root12 on schedule every '20:25' hour_minute do select 1; SHOW CREATE EVENT root12; Event sql_mode Create Event root12 CREATE EVENT `events_test`.`root12` ON SCHEDULE EVERY '20:25' HOUR_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root13 on schedule every '25:25' hour_minute do select 1; SHOW CREATE EVENT root13; Event sql_mode Create Event root13 CREATE EVENT `events_test`.`root13` ON SCHEDULE EVERY '25:25' HOUR_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root13_1 on schedule every '11:65' hour_minute do select 1; SHOW CREATE EVENT root13_1; Event sql_mode Create Event root13_1 CREATE EVENT `events_test`.`root13_1` ON SCHEDULE EVERY '12:5' HOUR_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root14 on schedule every '35:35' minute_second do select 1; SHOW CREATE EVENT root14; Event sql_mode Create Event root14 CREATE EVENT `events_test`.`root14` ON SCHEDULE EVERY '35:35' MINUTE_SECOND ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root15 on schedule every '35:66' minute_second do select 1; SHOW CREATE EVENT root15; Event sql_mode Create Event root15 CREATE EVENT `events_test`.`root15` ON SCHEDULE EVERY '36:6' MINUTE_SECOND ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root16 on schedule every '35:56' day_minute do select 1; SHOW CREATE EVENT root16; Event sql_mode Create Event root16 CREATE EVENT `events_test`.`root16` ON SCHEDULE EVERY '1 11:56' DAY_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root17 on schedule every '35:12:45' day_minute do select 1; SHOW CREATE EVENT root17; Event sql_mode Create Event root17 CREATE EVENT `events_test`.`root17` ON SCHEDULE EVERY '35 12:45' DAY_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root17_1 on schedule every '35:25:65' day_minute do select 1; SHOW CREATE EVENT root17_1; Event sql_mode Create Event root17_1 CREATE EVENT `events_test`.`root17_1` ON SCHEDULE EVERY '36 2:5' DAY_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root18 on schedule every '35:12:45' hour_second do select 1; SHOW CREATE EVENT root18; Event sql_mode Create Event root18 CREATE EVENT `events_test`.`root18` ON SCHEDULE EVERY '35:12:45' HOUR_SECOND ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root19 on schedule every '15:59:85' hour_second do select 1; SHOW CREATE EVENT root19; Event sql_mode Create Event root19 CREATE EVENT `events_test`.`root19` ON SCHEDULE EVERY '16:0:25' HOUR_SECOND ON COMPLETION NOT PRESERVE ENABLE DO select 1 create event root20 on schedule every '50:20:12:45' day_second do select 1; SHOW CREATE EVENT root20; Event sql_mode Create Event root20 CREATE EVENT `events_test`.`root20` ON SCHEDULE EVERY '50 20:12:45' DAY_SECOND ON COMPLETION NOT PRESERVE ENABLE DO select 1 set names cp1251; create event ����21 on schedule every '50:23:59:95' day_second COMMENT '���� � 1251 ��������' do select 1; SHOW CREATE EVENT ����21; Event sql_mode Create Event ����21 CREATE EVENT `events_test`.`����21` ON SCHEDULE EVERY '51 0:0:35' DAY_SECOND ON COMPLETION NOT PRESERVE ENABLE COMMENT '���� � 1251 ��������' DO select 1 insert into mysql.event (db, name, body, definer, interval_value, interval_field) values (database(), "root22", "select 1", user(), 100, "SECOND_MICROSECOND"); show create event root22; ERROR 42000: This version of MySQL doesn't yet support 'MICROSECOND' SHOW EVENTS; ERROR 42000: This version of MySQL doesn't yet support 'MICROSECOND' drop event root22; drop event root6; drop event root7; drop event root8; drop event root8_1; drop event root9; drop event root10; drop event root11; drop event root12; drop event root13; drop event root13_1; drop event root14; drop event root15; drop event root16; drop event root17; drop event root17_1; drop event root18; drop event root19; drop event root20; drop event ����21; set names latin1; CREATE EVENT intact_check ON SCHEDULE EVERY 10 HOUR DO SELECT "nothing"; SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test intact_check root@localhost RECURRING NULL 10 HOUR # # ENABLED ALTER TABLE mysql.event ADD dummy INT FIRST; SHOW EVENTS; ERROR HY000: Column count of mysql.event is wrong. Expected 16, found 17. Table probably corrupted ALTER TABLE mysql.event DROP dummy, ADD dummy2 VARCHAR(64) FIRST; SHOW EVENTS; ERROR HY000: Column count of mysql.event is wrong. Expected 16, found 17. Table probably corrupted ALTER TABLE mysql.event DROP dummy2; SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test intact_check root@localhost RECURRING NULL 10 HOUR # # ENABLED CREATE TABLE event_like LIKE mysql.event; INSERT INTO event_like SELECT * FROM mysql.event; ALTER TABLE mysql.event MODIFY db char(20) character set utf8 collate utf8_bin default ''; SHOW CREATE TABLE mysql.event; Table Create Table event CREATE TABLE `event` ( `db` char(20) character set utf8 collate utf8_bin NOT NULL default '', `name` char(64) character set utf8 collate utf8_bin NOT NULL default '', `body` longblob NOT NULL, `definer` char(77) character set utf8 collate utf8_bin NOT NULL default '', `execute_at` datetime default NULL, `interval_value` int(11) default NULL, `interval_field` enum('YEAR','QUARTER','MONTH','DAY','HOUR','MINUTE','WEEK','SECOND','MICROSECOND','YEAR_MONTH','DAY_HOUR','DAY_MINUTE','DAY_SECOND','HOUR_MINUTE','HOUR_SECOND','MINUTE_SECOND','DAY_MICROSECOND','HOUR_MICROSECOND','MINUTE_MICROSECOND','SECOND_MICROSECOND') default NULL, `created` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP, `modified` timestamp NOT NULL default '0000-00-00 00:00:00', `last_executed` datetime default NULL, `starts` datetime default NULL, `ends` datetime default NULL, `status` enum('ENABLED','DISABLED') NOT NULL default 'ENABLED', `on_completion` enum('DROP','PRESERVE') NOT NULL default 'DROP', `sql_mode` set('REAL_AS_FLOAT','PIPES_AS_CONCAT','ANSI_QUOTES','IGNORE_SPACE','NOT_USED','ONLY_FULL_GROUP_BY','NO_UNSIGNED_SUBTRACTION','NO_DIR_IN_CREATE','POSTGRESQL','ORACLE','MSSQL','DB2','MAXDB','NO_KEY_OPTIONS','NO_TABLE_OPTIONS','NO_FIELD_OPTIONS','MYSQL323','MYSQL40','ANSI','NO_AUTO_VALUE_ON_ZERO','NO_BACKSLASH_ESCAPES','STRICT_TRANS_TABLES','STRICT_ALL_TABLES','NO_ZERO_IN_DATE','NO_ZERO_DATE','INVALID_DATES','ERROR_FOR_DIVISION_BY_ZERO','TRADITIONAL','NO_AUTO_CREATE_USER','HIGH_NOT_PRECEDENCE') NOT NULL default '', `comment` char(64) character set utf8 collate utf8_bin NOT NULL default '', PRIMARY KEY (`definer`,`db`,`name`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='Events' SELECT event_name FROM INFORMATION_SCHEMA.EVENTS; ERROR HY000: Cannot load from mysql.event. Table probably corrupted. See error log. ALTER TABLE mysql.event MODIFY db char(64) character set utf8 collate utf8_bin default ''; "This should work" SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test intact_check root@localhost RECURRING NULL 10 HOUR # # ENABLED ALTER TABLE mysql.event MODIFY db char(64) character set cp1251 default ''; SELECT event_name FROM INFORMATION_SCHEMA.EVENTS; ERROR HY000: Cannot load from mysql.event. Table probably corrupted. See error log. ALTER TABLE mysql.event MODIFY db varchar(64) character set utf8 collate utf8_bin default ''; SELECT event_name FROM INFORMATION_SCHEMA.EVENTS; ERROR HY000: Cannot load from mysql.event. Table probably corrupted. See error log. ALTER TABLE mysql.event DROP comment, DROP starts; SELECT event_name FROM INFORMATION_SCHEMA.EVENTS; ERROR HY000: Column count of mysql.event is wrong. Expected 16, found 14. Table probably corrupted DROP TABLE mysql.event; CREATE TABLE mysql.event like event_like; INSERT INTO mysql.event SELECT * FROM event_like; DROP TABLE event_like; SHOW EVENTS; Db Name Definer Type Execute at Interval value Interval field Starts Ends Status events_test intact_check root@localhost RECURRING NULL 10 HOUR # # ENABLED DROP EVENT intact_check; 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 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 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, TRIGGER 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 SECOND # # ENABLED events_test three_event ev_test@localhost RECURRING NULL 20 SECOND # # ENABLED events_test two_event ev_test@localhost RECURRING NULL 20 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 SECOND # # ENABLED events_test three_event ev_test@localhost RECURRING NULL 20 SECOND # # ENABLED events_test two_event ev_test@localhost RECURRING NULL 20 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 SECOND # # ENABLED events_test two_event ev_test@localhost RECURRING NULL 20 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 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 SECOND # # ENABLED events_test three_event ev_test@localhost RECURRING NULL 20 SECOND # # ENABLED events_test two_event ev_test@localhost RECURRING NULL 20 SECOND # # ENABLED events_test one_event root@localhost RECURRING NULL 10 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 SECOND ENABLED NOT PRESERVE NULL events_test three_event ev_test@localhost select 123 RECURRING NULL 20 SECOND ENABLED PRESERVE three event NULL events_test two_event ev_test@localhost select 123 RECURRING NULL 20 SECOND ENABLED NOT PRESERVE two event NULL events_test one_event root@localhost select 123 RECURRING NULL 10 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 localhost NULL Connect # Sleeping NULL # root localhost 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 localhost NULL Connect # Sleeping NULL # root localhost 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; create table t_16 (s1 int); create trigger t_16_bi before insert on t_16 for each row create event e_16 on schedule every 1 second do set @a=5; ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger. drop table t_16; create event white_space on schedule every 10 hour disable do select 1; select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space'; event_schema event_name definer event_body events_test white_space root@localhost select 1 drop event white_space; create event white_space on schedule every 10 hour disable do select 2; select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space'; event_schema event_name definer event_body events_test white_space root@localhost select 2 drop event white_space; create event white_space on schedule every 10 hour disable do select 3; select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space'; event_schema event_name definer event_body events_test white_space root@localhost select 3 drop event white_space; drop database events_test;