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=off; DROP EVENT e_x1; DROP EVENT e_x2; DROP DATABASE db_x; DROP USER pauline@localhost; USE events_test; SET GLOBAL event_scheduler=off; 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 table test_nested(a int); create event e_43 on schedule every 1 second do set @a = 5; alter event e_43 do alter event e_43 do set @a = 4; ERROR HY000: Recursivity of EVENT DDL statements is forbidden when body is present alter event e_43 do begin alter event e_43 on schedule every 5 minute; insert into test_nested values(1); end| set global event_scheduler = on; select db, name, body, status, interval_field, interval_value from mysql.event; db name body status interval_field interval_value events_test e_43 begin alter event e_43 on schedule every 5 minute; insert into test_nested values(1); end ENABLED MINUTE 5 drop event e_43; drop table test_nested; "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; alter event non_existant rename to non_existant_too; ERROR HY000: Unknown event 'non_existant' set global event_scheduler = off; create event existant on schedule at now() + interval 1 year do select 12; alter event non_existant rename to existant; ERROR HY000: Event 'existant' already exists alter event existant rename to events_test.existant; ERROR HY000: Same old and new event name drop event existant; 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()); 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 `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 `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 `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 `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 `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 `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 `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 `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 `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 `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 `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 `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 `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 `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 `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 `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 `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 `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 `����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; create event root23 on schedule every -100 year do select 1; ERROR HY000: INTERVAL is either not positive or too big create event root23 on schedule every 222222222222222222222 year do select 1; ERROR HY000: INTERVAL is either not positive or too big 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(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 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) 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 (`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 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 disable do set @a = 5; ERROR HY000: Incorrect AT value: 'NULL' create event e_26 on schedule at 'definitely not a datetime' disable 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=off; ERROR HY000: Variable 'event_scheduler' is a GLOBAL variable and should be set with SET GLOBAL set global event_scheduler=3; ERROR 42000: Variable 'event_scheduler' can't be set to the value of '3' set global event_scheduler=disabled; ERROR 42000: Variable 'event_scheduler' can't be set to the value of 'disabled' "DISABLE the scheduler. Testing that it does not work when the variable is 0" set global event_scheduler=off; 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" select /*1*/ user, host, db, command, state, info from information_schema.processlist where (command!='Daemon' || user='event_scheduler') and (info is null or info not like '%processlist%') order by info; user host db command state info 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=on; 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 2 processes: the scheduler and the locked event" select /*2*/ user, host, db, command, state, info from information_schema.processlist where (command!='Daemon' || user='event_scheduler') and (info is null or info not like '%processlist%') order by info; user host db command state info event_scheduler localhost NULL Daemon Waiting for next activation NULL root localhost events_test Connect User lock select get_lock("test_lock2", 20) "Release the mutex, the event worker should finish." "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 have only 3 processes: the scheduler, our conn and the locked event" select /*3*/ user, host, db, command, state, info from information_schema.processlist where (command!='Daemon' || user='event_scheduler') and (info is null or info not like '%processlist%') order by info; user host db command state info event_scheduler localhost NULL Daemon Waiting for next activation NULL root localhost events_test Connect User lock select get_lock("test_lock2_1", 20) set global event_scheduler=off; "Should have only our process now:" select /*4*/ user, host, db, command, state, info from information_schema.processlist where (command!='Daemon' || user='event_scheduler') and (info is null or info not like '%processlist%') order by info; user host db command state info root localhost events_test Connect User lock select get_lock("test_lock2_1", 20) 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: Recursivity of EVENT DDL statements is forbidden when body is present drop table t_16; create event white_space on schedule every 10 hour disable do select 1; select event_schema, event_name, definer, event_definition from information_schema.events where event_name='white_space'; event_schema event_name definer event_definition 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_definition from information_schema.events where event_name='white_space'; event_schema event_name definer event_definition 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_definition from information_schema.events where event_name='white_space'; event_schema event_name definer event_definition events_test white_space root@localhost select 3 drop event white_space; create event e1 on schedule every 1 year do set @a = 5; create table t1 (s1 int); create trigger t1_ai after insert on t1 for each row show create event e1; ERROR 0A000: Not allowed to return a result set from a trigger drop table t1; drop event e1; drop database events_test;