Commit 086fba76 authored by unknown's avatar unknown
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BUG#16420: Events: timestamps become UTC 

BUG#26429: SHOW CREATE EVENT is incorrect for an event that
           STARTS NOW()
BUG#26431: Impossible to re-create an event from backup if its
           STARTS clause is in the past
WL#3698: Events: execution in local time zone

The problem was that local times specified by the user in AT, STARTS
and ENDS of CREATE EVENT/ALTER EVENT statement were converted to UTC,
and the original time zone was forgotten.  This way, event scheduler
couldn't honor Daylight Saving Time shifts, and times shown to the
user were also in UTC.  Additionally, CREATE EVENT didn't allow times
in the past, thus preventing straightforward event restoration from
old backups.

This patch reworks event scheduler time computations, performing them
in the time zone associated with the event.  Also it allows times to
be in the past.

The patch adds time_zone column to mysql.event table.

NOTE: The patch is almost final, but the bug#9953 should be pushed
first.


client/mysqldump.c:
  Before every CREATE EVENT, output its time zone.
mysql-test/include/wait_condition.inc:
  Add optional $wait_timeout parameter.
mysql-test/lib/init_db.sql:
  Add time_zone column.
mysql-test/r/events.result:
  Update result.
mysql-test/r/events_bugs.result:
  Update result.
mysql-test/r/events_grant.result:
  Update result.
mysql-test/r/events_restart_phase1.result:
  Update result.
mysql-test/r/events_scheduling.result:
  Update result.
mysql-test/r/mysqldump.result:
  Update result.
mysql-test/r/ps.result:
  Update result.
mysql-test/r/system_mysql_db.result:
  Update result.
mysql-test/t/events.test:
  Remove STARTS from the result, as it depends on current time.
mysql-test/t/events_bugs.test:
  Time in the past is no longer an error.
mysql-test/t/events_restart_phase1.test:
  Fill new column 'time_zone' in mysql.event.
mysql-test/t/events_scheduling.test:
  Cleanup: disable event scheduler.
scripts/mysql_create_system_tables.sh:
  Add new column 'time_zone' to mysql.event.
scripts/mysql_fix_privilege_tables.sql:
  Add new column 'time_zone' to mysql.event.
sql/event_data_objects.cc:
  The essence of the change is the following:
   - for internal times use my_time_t instead of TIME.  Assignment and
     comparison is done now on plain numbers.
   - in init_execute_at(), init_starts(), init_ends() convert given time
     to number of seconds since Epoch (aka Unix time, in UTC).
   - handle time_zone field loading and storing.
   - in get_next_time(), Unix time is converted back to event time zone,
     interval is added, and the result is converted to UTC again.
   - fix Event_timed::get_create_event() to report STARTS and ENDS.
   - before executing the event body we set thread time zone to the
     event time zone.
sql/event_data_objects.h:
  Add time_zone member to Event_basic class.
  
  Store internal times in my_time_t (number of seconds since Epoch),
  rather than in broken down TIME structure.
sql/event_db_repository.cc:
  Add time_zone column handling.
  
  Give a warning and do not create an event if its execution time is in
  the past, and ON COMPLETION NOT PRESERVE is set, because such an event
  should be dropped by that time.  Also, do not allow ALTER EVENT to
  set execution time in the past when ON COMPLETION NOT PRESERVE is set.
sql/event_db_repository.h:
  Add enum member for new time zone column.
sql/event_queue.cc:
  Replace handling of broken down times with simple handling of
  my_time_t.
sql/event_queue.h:
  Store internal times in my_time_t (number of seconds since Epoch),
  rather than in broken down TIME structure.
sql/event_scheduler.cc:
  Add TODO comment.
sql/events.cc:
  Send time_zone column for SHOW CREATE EVENT.
sql/share/errmsg.txt:
  Update error message, and add two more errors.
sql/sql_show.cc:
  Add TIME_ZONE column to the output of SHOW EVENTS.
mysql-test/r/events_time_zone.result:
  BitKeeper file /home/tomash/src/mysql_ab/mysql-5.1-wl3698/mysql-test/r/events_time_zone.result
mysql-test/t/events_time_zone.test:
  BitKeeper file /home/tomash/src/mysql_ab/mysql-5.1-wl3698/mysql-test/t/events_time_zone.test
parent 783b7748

client/mysqldump.c

+9 −3
Original line number Diff line number Diff line
@@ -1431,6 +1431,8 @@ static uint dump_events_for_db(char *db) 
  strcpy(delimiter, ";");

  if (mysql_num_rows(event_list_res) > 0)

  {

    fprintf(sql_file, "/*!50106 SET @save_time_zone= @@TIME_ZONE */ ;\n");



    while ((event_list_row= mysql_fetch_row(event_list_res)) != NULL)

    {

      event_name= quote_name(event_list_row[1], name_buff, 0);
@@ -1447,13 +1449,13 @@ static uint dump_events_for_db(char *db) 
          if the user has EXECUTE privilege he can see event names, but not the

          event body!

        */

        if (strlen(row[2]) != 0)

        if (strlen(row[3]) != 0)

        {

          if (opt_drop)

            fprintf(sql_file, "/*!50106 DROP EVENT IF EXISTS %s */%s\n", 

                event_name, delimiter);



          delimit_test= create_delimiter(row[2], delimiter, sizeof(delimiter)); 

          delimit_test= create_delimiter(row[3], delimiter, sizeof(delimiter)); 

          if (delimit_test == NULL) {

            fprintf(stderr, "%s: Warning: Can't dump event '%s'\n", 

                event_name, my_progname);
@@ -1461,11 +1463,15 @@ static uint dump_events_for_db(char *db) 
          }



          fprintf(sql_file, "DELIMITER %s\n", delimiter);

          fprintf(sql_file, "/*!50106 %s */ %s\n", row[2], delimiter);

          fprintf(sql_file, "/*!50106 SET TIME_ZONE= '%s' */ %s\n",

                  row[2], delimiter);

          fprintf(sql_file, "/*!50106 %s */ %s\n", row[3], delimiter);

        }

      } /* end of event printing */

    } /* end of list of events */

    fprintf(sql_file, "DELIMITER ;\n");

    fprintf(sql_file, "/*!50106 SET TIME_ZONE= @save_time_zone */ ;\n");



    mysql_free_result(event_res);

  }

  mysql_free_result(event_list_res);

mysql-test/include/wait_condition.inc

+16 −1
Original line number Diff line number Diff line
@@ -11,13 +11,28 @@ 
#      SELECT c = 3 FROM t;

#    --source include/wait_condition.inc

#

#   OR

#

#    let $wait_timeout= 60; # Override default 30 seconds with 60.

#    let $wait_condition=

#      SELECT c = 3 FROM t;

#    --source include/wait_condition.inc

#

# EXAMPLE

#    events_bugs.test

#    events_bugs.test, events_time_zone.test

#



--disable_query_log



let $wait_counter= 300;

if ($wait_timeout)

{

  let $wait_counter= `SELECT $wait_timeout * 10`;

}

# Reset $wait_timeout so that its value won't be used on subsequent

# calls, and default will be used instead.

let $wait_timeout= 0;



while ($wait_counter)

{

    let $success= `$wait_condition`;

mysql-test/lib/init_db.sql

+1 −0
Original line number Diff line number Diff line
@@ -645,6 +645,7 @@ CREATE TABLE event ( 
                        'HIGH_NOT_PRECEDENCE'

                    ) DEFAULT '' NOT NULL,

  comment char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL default '',

  time_zone char(64) CHARACTER SET latin1 NOT NULL DEFAULT 'SYSTEM',

  PRIMARY KEY  (db, name)

) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT 'Events';

mysql-test/r/events.result

+51 −50
Original line number Diff line number Diff line
@@ -118,81 +118,81 @@ 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

Event	sql_mode	time_zone	Create Event

root6		SYSTEM	CREATE EVENT `root6` ON SCHEDULE EVERY '10:20' MINUTE_SECOND STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root7		SYSTEM	CREATE EVENT `root7` ON SCHEDULE EVERY 2 YEAR STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root8		SYSTEM	CREATE EVENT `root8` ON SCHEDULE EVERY '2-5' YEAR_MONTH STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root8_1		SYSTEM	CREATE EVENT `root8_1` ON SCHEDULE EVERY '3-3' YEAR_MONTH STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root9		SYSTEM	CREATE EVENT `root9` ON SCHEDULE EVERY 2 WEEK STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root10		SYSTEM	CREATE EVENT `root10` ON SCHEDULE EVERY '20 5' DAY_HOUR STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root11		SYSTEM	CREATE EVENT `root11` ON SCHEDULE EVERY '21 1' DAY_HOUR STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root12		SYSTEM	CREATE EVENT `root12` ON SCHEDULE EVERY '20:25' HOUR_MINUTE STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root13		SYSTEM	CREATE EVENT `root13` ON SCHEDULE EVERY '25:25' HOUR_MINUTE STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root13_1		SYSTEM	CREATE EVENT `root13_1` ON SCHEDULE EVERY '12:5' HOUR_MINUTE STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root14		SYSTEM	CREATE EVENT `root14` ON SCHEDULE EVERY '35:35' MINUTE_SECOND STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root15		SYSTEM	CREATE EVENT `root15` ON SCHEDULE EVERY '36:6' MINUTE_SECOND STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root16		SYSTEM	CREATE EVENT `root16` ON SCHEDULE EVERY '1 11:56' DAY_MINUTE STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root17		SYSTEM	CREATE EVENT `root17` ON SCHEDULE EVERY '35 12:45' DAY_MINUTE STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root17_1		SYSTEM	CREATE EVENT `root17_1` ON SCHEDULE EVERY '36 2:5' DAY_MINUTE STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root18		SYSTEM	CREATE EVENT `root18` ON SCHEDULE EVERY '35:12:45' HOUR_SECOND STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root19		SYSTEM	CREATE EVENT `root19` ON SCHEDULE EVERY '16:0:25' HOUR_SECOND STARTS '#' 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

Event	sql_mode	time_zone	Create Event

root20		SYSTEM	CREATE EVENT `root20` ON SCHEDULE EVERY '50 20:12:45' DAY_SECOND STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1

set names cp1251;

create event ðóóò21 on schedule every '50:23:59:95' day_second COMMENT 'òîâà å 1251 êîìåíòàð' do select 1;

SHOW CREATE EVENT ðóóò21;

Event	sql_mode	Create Event

ðóóò21		CREATE EVENT `ðóóò21` ON SCHEDULE EVERY '51 0:0:35' DAY_SECOND ON COMPLETION NOT PRESERVE ENABLE COMMENT 'òîâà å 1251 êîìåíòàð' DO select 1

Event	sql_mode	time_zone	Create Event

ðóóò21		SYSTEM	CREATE EVENT `ðóóò21` ON SCHEDULE EVERY '51 0:0:35' DAY_SECOND STARTS '#' ON COMPLETION NOT PRESERVE ENABLE COMMENT 'òîâà å 1251 êîìåíòàð' 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'
@@ -225,18 +225,18 @@ drop event 
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

Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status

events_test	intact_check	root@localhost	SYSTEM	RECURRING	NULL	10	#	#	NULL	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

ERROR HY000: Column count of mysql.event is wrong. Expected 17, found 18. 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

ERROR HY000: Column count of mysql.event is wrong. Expected 17, found 18. 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

Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status

events_test	intact_check	root@localhost	SYSTEM	RECURRING	NULL	10	#	#	NULL	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 '';
@@ -262,6 +262,7 @@ event CREATE TABLE `event` ( 
  `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 '',

  `time_zone` char(64) CHARACTER SET latin1 NOT NULL DEFAULT 'SYSTEM',

  PRIMARY KEY (`db`,`name`)

) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='Events'

SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
@@ -269,8 +270,8 @@ ERROR HY000: Cannot load from mysql.event. Table probably corrupted. See error l 
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

Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status

events_test	intact_check	root@localhost	SYSTEM	RECURRING	NULL	10	#	#	NULL	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.
@@ -279,14 +280,14 @@ 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

ERROR HY000: Column count of mysql.event is wrong. Expected 17, found 15. 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

Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status

events_test	intact_check	root@localhost	SYSTEM	RECURRING	NULL	10	#	#	NULL	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;
@@ -399,5 +400,5 @@ ERROR 42000: Incorrect database name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 
SHOW EVENTS FROM ``;

ERROR 42000: Incorrect database name ''

SHOW EVENTS FROM `events\\test`;

Db	Name	Definer	Type	Execute at	Interval value	Interval field	Starts	Ends	Status

Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status

drop database events_test;

mysql-test/r/events_bugs.result

+5 −2
Original line number Diff line number Diff line
@@ -25,9 +25,12 @@ ERROR HY000: Incorrect STARTS value: '99990101000000' 
create event e_55 on schedule every 10 minute ends 99990101000000 do drop table t;

ERROR HY000: ENDS is either invalid or before STARTS

create event e_55 on schedule at 10000101000000 do drop table t;

ERROR HY000: Activation (AT) time is in the past

ERROR HY000: Incorrect AT value: '10000101000000'

create event e_55 on schedule at 20000101000000 do drop table t;

ERROR HY000: Activation (AT) time is in the past

Warnings:

Note	1584	Event execution time is in the past and ON COMPLETION NOT PRESERVE is set. Event has not been created

show events;

Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status

create event e_55 on schedule at 20200101000000 starts 10000101000000 do drop table t;

ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'starts 10000101000000 do drop table t' at line 1

create event e_55 on schedule at 20200101000000 ends 10000101000000 do drop table t;