477 lines
21 KiB
Plaintext
477 lines
21 KiB
Plaintext
call mtr.add_suppression("Column count of mysql.event is wrong. Expected .*, found .*\. The table is probably corrupted");
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drop database if exists events_test;
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drop database if exists db_x;
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drop database if exists mysqltest_db2;
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drop database if exists mysqltest_no_such_database;
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create database events_test;
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use events_test;
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CREATE USER pauline@localhost;
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CREATE DATABASE db_x;
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GRANT EVENT ON db_x.* TO pauline@localhost;
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USE db_x;
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CREATE TABLE x_table(a int);
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CREATE EVENT e_x1 ON SCHEDULE EVERY 1 SECOND DO DROP DATABASE db_x;
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CREATE EVENT e_x2 ON SCHEDULE EVERY 1 SECOND DO DROP TABLE x_table;
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SHOW DATABASES LIKE 'db_x';
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Database (db_x)
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db_x
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SET GLOBAL event_scheduler=1;
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SHOW DATABASES LIKE 'db_x';
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Database (db_x)
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db_x
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SHOW TABLES FROM db_x;
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Tables_in_db_x
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x_table
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SET GLOBAL event_scheduler=off;
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DROP EVENT e_x1;
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DROP EVENT e_x2;
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DROP DATABASE db_x;
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DROP USER pauline@localhost;
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USE events_test;
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SET GLOBAL event_scheduler=off;
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drop event if exists event1;
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Warnings:
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Note 1305 Event event1 does not exist
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create event event1 on schedule every 15 minute starts now() ends date_add(now(), interval 5 hour) DO begin end;
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alter event event1 rename to event2 enable;
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alter event event2 disable;
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alter event event2 enable;
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alter event event2 on completion not preserve;
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alter event event2 on schedule every 1 year on completion preserve rename to event3 comment "new comment" do begin select 1; end__
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alter event event3 rename to event2;
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drop event event2;
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create event event2 on schedule every 2 second starts now() ends date_add(now(), interval 5 hour) comment "some" DO begin end;
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drop event event2;
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CREATE EVENT event_starts_test ON SCHEDULE EVERY 10 SECOND COMMENT "" DO SELECT 1;
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SELECT interval_field, interval_value, body FROM mysql.event WHERE db='events_test' AND name='event_starts_test';
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interval_field interval_value body
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SECOND 10 SELECT 1
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SELECT execute_at IS NULL, starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test';
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execute_at IS NULL starts IS NULL ends IS NULL comment
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1 0 1
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ALTER EVENT event_starts_test ON SCHEDULE AT '2020-02-02 20:00:02';
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SELECT execute_at IS NULL, starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test';
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execute_at IS NULL starts IS NULL ends IS NULL comment
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0 1 1
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ALTER EVENT event_starts_test COMMENT "non-empty comment";
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SELECT execute_at IS NULL, starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test';
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execute_at IS NULL starts IS NULL ends IS NULL comment
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0 1 1 non-empty comment
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ALTER EVENT event_starts_test COMMENT "";
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SELECT execute_at IS NULL, starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test';
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execute_at IS NULL starts IS NULL ends IS NULL comment
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0 1 1
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DROP EVENT event_starts_test;
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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;
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SELECT execute_at IS NULL, starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test';
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execute_at IS NULL starts IS NULL ends IS NULL comment
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1 0 0
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ALTER EVENT event_starts_test COMMENT "non-empty comment";
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SELECT execute_at IS NULL, starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test';
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execute_at IS NULL starts IS NULL ends IS NULL comment
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1 0 0 non-empty comment
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ALTER EVENT event_starts_test COMMENT "";
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SELECT execute_at IS NULL, starts IS NULL, ends IS NULL, comment FROM mysql.event WHERE db='events_test' AND name='event_starts_test';
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execute_at IS NULL starts IS NULL ends IS NULL comment
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1 0 0
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DROP EVENT event_starts_test;
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create table test_nested(a int);
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create event e_43 on schedule every 1 second do set @a = 5;
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alter event e_43 do alter event e_43 do set @a = 4;
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ERROR HY000: Recursion of EVENT DDL statements is forbidden when body is present
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alter event e_43 do
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begin
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alter event e_43 on schedule every 5 minute;
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insert into test_nested values(1);
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end|
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set global event_scheduler = on;
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select db, name, body, status, interval_field, interval_value from mysql.event;
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db name body status interval_field interval_value
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events_test e_43 begin
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alter event e_43 on schedule every 5 minute;
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insert into test_nested values(1);
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end ENABLED MINUTE 5
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drop event e_43;
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drop table test_nested;
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"Let's check whether we can use non-qualified names"
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create table non_qualif(a int);
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create event non_qualif_ev on schedule every 10 minute do insert into non_qualif values (800219);
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select * from non_qualif;
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a
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800219
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drop event non_qualif_ev;
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drop table non_qualif;
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alter event non_existant rename to non_existant_too;
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ERROR HY000: Unknown event 'non_existant'
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set global event_scheduler = off;
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create event existant on schedule at now() + interval 1 year do select 12;
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alter event non_existant rename to existant;
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ERROR HY000: Event 'existant' already exists
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alter event existant rename to events_test.existant;
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ERROR HY000: Same old and new event name
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drop event existant;
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create table t_event3 (a int, b float);
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drop event if exists event3;
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Warnings:
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Note 1305 Event event3 does not exist
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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());
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select count(*) from t_event3;
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count(*)
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0
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drop event event3;
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drop table t_event3;
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set names utf8;
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CREATE EVENT root6 ON SCHEDULE EVERY '10:20' MINUTE_SECOND ON COMPLETION PRESERVE ENABLE COMMENT 'some comment' DO select 1;
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SHOW CREATE EVENT root6;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root6 SYSTEM CREATE EVENT `root6` ON SCHEDULE EVERY '10:20' MINUTE_SECOND STARTS '#' ON COMPLETION PRESERVE ENABLE COMMENT 'some comment' DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root7 on schedule every 2 year do select 1;
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SHOW CREATE EVENT root7;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root7 SYSTEM CREATE EVENT `root7` ON SCHEDULE EVERY 2 YEAR STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root8 on schedule every '2:5' year_month do select 1;
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SHOW CREATE EVENT root8;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root8 SYSTEM CREATE EVENT `root8` ON SCHEDULE EVERY '2-5' YEAR_MONTH STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root8_1 on schedule every '2:15' year_month do select 1;
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SHOW CREATE EVENT root8_1;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root8_1 SYSTEM CREATE EVENT `root8_1` ON SCHEDULE EVERY '3-3' YEAR_MONTH STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root9 on schedule every 2 week ON COMPLETION PRESERVE DISABLE COMMENT 'коментар на кирилица' do select 1;
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SHOW CREATE EVENT root9;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root9 SYSTEM CREATE EVENT `root9` ON SCHEDULE EVERY 2 WEEK STARTS '#' ON COMPLETION PRESERVE DISABLE COMMENT 'коментар на кирилица' DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root10 on schedule every '20:5' day_hour do select 1;
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SHOW CREATE EVENT root10;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root10 SYSTEM CREATE EVENT `root10` ON SCHEDULE EVERY '20 5' DAY_HOUR STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root11 on schedule every '20:25' day_hour do select 1;
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SHOW CREATE EVENT root11;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root11 SYSTEM CREATE EVENT `root11` ON SCHEDULE EVERY '21 1' DAY_HOUR STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root12 on schedule every '20:25' hour_minute do select 1;
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SHOW CREATE EVENT root12;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root12 SYSTEM CREATE EVENT `root12` ON SCHEDULE EVERY '20:25' HOUR_MINUTE STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root13 on schedule every '25:25' hour_minute do select 1;
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SHOW CREATE EVENT root13;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root13 SYSTEM CREATE EVENT `root13` ON SCHEDULE EVERY '25:25' HOUR_MINUTE STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root13_1 on schedule every '11:65' hour_minute do select 1;
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SHOW CREATE EVENT root13_1;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root13_1 SYSTEM CREATE EVENT `root13_1` ON SCHEDULE EVERY '12:5' HOUR_MINUTE STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root14 on schedule every '35:35' minute_second do select 1;
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SHOW CREATE EVENT root14;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root14 SYSTEM CREATE EVENT `root14` ON SCHEDULE EVERY '35:35' MINUTE_SECOND STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root15 on schedule every '35:66' minute_second do select 1;
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SHOW CREATE EVENT root15;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root15 SYSTEM CREATE EVENT `root15` ON SCHEDULE EVERY '36:6' MINUTE_SECOND STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root16 on schedule every '35:56' day_minute do select 1;
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SHOW CREATE EVENT root16;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root16 SYSTEM CREATE EVENT `root16` ON SCHEDULE EVERY '1 11:56' DAY_MINUTE STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root17 on schedule every '35:12:45' day_minute do select 1;
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SHOW CREATE EVENT root17;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root17 SYSTEM CREATE EVENT `root17` ON SCHEDULE EVERY '35 12:45' DAY_MINUTE STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root17_1 on schedule every '35:25:65' day_minute do select 1;
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SHOW CREATE EVENT root17_1;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root17_1 SYSTEM CREATE EVENT `root17_1` ON SCHEDULE EVERY '36 2:5' DAY_MINUTE STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root18 on schedule every '35:12:45' hour_second do select 1;
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SHOW CREATE EVENT root18;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root18 SYSTEM CREATE EVENT `root18` ON SCHEDULE EVERY '35:12:45' HOUR_SECOND STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root19 on schedule every '15:59:85' hour_second do select 1;
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SHOW CREATE EVENT root19;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root19 SYSTEM CREATE EVENT `root19` ON SCHEDULE EVERY '16:0:25' HOUR_SECOND STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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create event root20 on schedule every '50:20:12:45' day_second do select 1;
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SHOW CREATE EVENT root20;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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root20 SYSTEM CREATE EVENT `root20` ON SCHEDULE EVERY '50 20:12:45' DAY_SECOND STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
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set names cp1251;
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create event <20><><EFBFBD><EFBFBD>21 on schedule every '50:23:59:95' day_second COMMENT '<27><><EFBFBD><EFBFBD> <20> 1251 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>' do select 1;
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SHOW CREATE EVENT <20><><EFBFBD><EFBFBD>21;
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Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD>21 SYSTEM CREATE EVENT `руут21` ON SCHEDULE EVERY '51 0:0:35' DAY_SECOND STARTS '#' ON COMPLETION NOT PRESERVE ENABLE COMMENT 'това е 1251 коментар' DO select 1 cp1251 cp1251_general_ci latin1_swedish_ci
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insert into mysql.event (
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db,
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name,
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body,
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definer,
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interval_value,
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interval_field,
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originator,
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character_set_client,
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collation_connection,
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db_collation,
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body_utf8)
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values (
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database(),
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"root22",
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"select 1",
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user(),
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100,
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"SECOND_MICROSECOND",
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1,
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'utf8',
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'utf8_general_ci',
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'utf8_general_ci',
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'select 1');
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show create event root22;
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ERROR 42000: This version of MySQL doesn't yet support 'MICROSECOND'
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SHOW EVENTS;
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ERROR 42000: This version of MySQL doesn't yet support 'MICROSECOND'
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drop event root22;
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create event root23 on schedule every -100 year do select 1;
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ERROR HY000: INTERVAL is either not positive or too big
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create event root23 on schedule every 222222222222222222222 year do select 1;
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ERROR HY000: INTERVAL is either not positive or too big
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drop event root6;
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drop event root7;
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drop event root8;
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drop event root8_1;
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drop event root9;
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drop event root10;
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drop event root11;
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drop event root12;
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drop event root13;
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drop event root13_1;
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drop event root14;
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drop event root15;
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drop event root16;
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drop event root17;
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drop event root17_1;
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drop event root18;
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drop event root19;
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drop event root20;
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drop event <20><><EFBFBD><EFBFBD>21;
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set names latin1;
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Create a test event. Only event metadata is relevant,
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the actual schedule and body are not.
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CREATE EVENT intact_check ON SCHEDULE EVERY 10 HOUR DO SELECT "nothing";
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SHOW EVENTS;
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Db Name Definer Time zone Type Execute at Interval value Interval field Starts Ends Status Originator character_set_client collation_connection Database Collation
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events_test intact_check root@localhost SYSTEM RECURRING NULL 10 # # NULL ENABLED 1 latin1 latin1_swedish_ci latin1_swedish_ci
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Try to alter mysql.event: the server should fail to load
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event information after mysql.event was tampered with.
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First, let's add a column to the end and check the error is emitted.
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ALTER TABLE mysql.event ADD dummy INT;
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SHOW EVENTS;
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ERROR HY000: Failed to open mysql.event
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SELECT event_name FROM INFORMATION_SCHEMA.events;
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ERROR HY000: Failed to open mysql.event
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SHOW CREATE EVENT intact_check;
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ERROR HY000: Failed to open mysql.event
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DROP EVENT no_such_event;
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ERROR HY000: Failed to open mysql.event
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CREATE EVENT intact_check_1 ON SCHEDULE EVERY 5 HOUR DO SELECT 5;
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ERROR HY000: Failed to open mysql.event
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ALTER EVENT intact_check_1 ON SCHEDULE EVERY 8 HOUR DO SELECT 8;
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ERROR HY000: Failed to open mysql.event
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ALTER EVENT intact_check_1 RENAME TO intact_check_2;
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ERROR HY000: Failed to open mysql.event
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DROP EVENT intact_check_1;
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ERROR HY000: Failed to open mysql.event
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DROP EVENT intact_check_2;
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ERROR HY000: Failed to open mysql.event
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DROP EVENT intact_check;
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ERROR HY000: Failed to open mysql.event
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DROP DATABASE IF EXISTS mysqltest_no_such_database;
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Warnings:
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Note 1008 Can't drop database 'mysqltest_no_such_database'; database doesn't exist
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CREATE DATABASE mysqltest_db2;
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DROP DATABASE mysqltest_db2;
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Warnings:
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Error 1545 Failed to open mysql.event
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SELECT @@event_scheduler;
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@@event_scheduler
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OFF
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SHOW VARIABLES LIKE 'event_scheduler';
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Variable_name Value
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event_scheduler OFF
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SET GLOBAL event_scheduler=OFF;
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ALTER TABLE mysql.event DROP dummy;
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DROP EVENT intact_check;
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CREATE EVENT intact_check ON SCHEDULE EVERY 10 HOUR DO SELECT "nothing";
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Now let's add a column to the first position: the server
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expects to see event schema name there
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ALTER TABLE mysql.event ADD dummy INT FIRST;
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SHOW EVENTS;
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ERROR HY000: Failed to open mysql.event
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SELECT event_name FROM INFORMATION_SCHEMA.events;
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ERROR HY000: Failed to open mysql.event
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SHOW CREATE EVENT intact_check;
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ERROR HY000: Failed to open mysql.event
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DROP EVENT no_such_event;
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ERROR HY000: Failed to open mysql.event
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CREATE EVENT intact_check_1 ON SCHEDULE EVERY 5 HOUR DO SELECT 5;
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ERROR HY000: Failed to open mysql.event
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ALTER EVENT intact_check_1 ON SCHEDULE EVERY 8 HOUR DO SELECT 8;
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ERROR HY000: Failed to open mysql.event
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ALTER EVENT intact_check_1 RENAME TO intact_check_2;
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ERROR HY000: Failed to open mysql.event
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DROP EVENT intact_check_1;
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ERROR HY000: Failed to open mysql.event
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DROP EVENT intact_check_2;
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ERROR HY000: Failed to open mysql.event
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DROP EVENT intact_check;
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ERROR HY000: Failed to open mysql.event
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DROP DATABASE IF EXISTS mysqltest_no_such_database;
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Warnings:
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Note 1008 Can't drop database 'mysqltest_no_such_database'; database doesn't exist
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CREATE DATABASE mysqltest_db2;
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DROP DATABASE mysqltest_db2;
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Warnings:
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Error 1545 Failed to open mysql.event
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SELECT @@event_scheduler;
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@@event_scheduler
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OFF
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SHOW VARIABLES LIKE 'event_scheduler';
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Variable_name Value
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event_scheduler OFF
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SET GLOBAL event_scheduler=OFF;
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Clean up
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ALTER TABLE mysql.event DROP dummy;
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DELETE FROM mysql.event;
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CREATE EVENT intact_check ON SCHEDULE EVERY 10 HOUR DO SELECT "nothing";
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Back up the table, further changes are not reversible
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CREATE TABLE event_like LIKE mysql.event;
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INSERT INTO event_like SELECT * FROM mysql.event;
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Drop some columns and try more checks.
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ALTER TABLE mysql.event DROP comment, DROP starts;
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SHOW EVENTS;
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ERROR HY000: Failed to open mysql.event
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SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
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ERROR HY000: Failed to open mysql.event
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SHOW CREATE EVENT intact_check;
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ERROR HY000: Failed to open mysql.event
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DROP EVENT no_such_event;
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ERROR HY000: Failed to open mysql.event
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CREATE EVENT intact_check_1 ON SCHEDULE EVERY 5 HOUR DO SELECT 5;
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ERROR HY000: Failed to open mysql.event
|
||
ALTER EVENT intact_check_1 ON SCHEDULE EVERY 8 HOUR DO SELECT 8;
|
||
ERROR HY000: Failed to open mysql.event
|
||
ALTER EVENT intact_check_1 RENAME TO intact_check_2;
|
||
ERROR HY000: Failed to open mysql.event
|
||
DROP EVENT intact_check_1;
|
||
ERROR HY000: Failed to open mysql.event
|
||
DROP EVENT intact_check_2;
|
||
ERROR HY000: Failed to open mysql.event
|
||
DROP EVENT intact_check;
|
||
ERROR HY000: Failed to open mysql.event
|
||
DROP DATABASE IF EXISTS mysqltest_no_such_database;
|
||
Warnings:
|
||
Note 1008 Can't drop database 'mysqltest_no_such_database'; database doesn't exist
|
||
CREATE DATABASE mysqltest_db2;
|
||
DROP DATABASE mysqltest_db2;
|
||
Warnings:
|
||
Error 1545 Failed to open mysql.event
|
||
SELECT @@event_scheduler;
|
||
@@event_scheduler
|
||
OFF
|
||
SHOW VARIABLES LIKE 'event_scheduler';
|
||
Variable_name Value
|
||
event_scheduler OFF
|
||
SET GLOBAL event_scheduler=OFF;
|
||
|
||
Now drop the table, and test again
|
||
|
||
|
||
DROP TABLE mysql.event;
|
||
SHOW EVENTS;
|
||
ERROR 42S02: Table 'mysql.event' doesn't exist
|
||
SELECT event_name FROM INFORMATION_SCHEMA.events;
|
||
ERROR 42S02: Table 'mysql.event' doesn't exist
|
||
SHOW CREATE EVENT intact_check;
|
||
ERROR 42S02: Table 'mysql.event' doesn't exist
|
||
DROP EVENT no_such_event;
|
||
ERROR 42S02: Table 'mysql.event' doesn't exist
|
||
CREATE EVENT intact_check_1 ON SCHEDULE EVERY 5 HOUR DO SELECT 5;
|
||
ERROR 42S02: Table 'mysql.event' doesn't exist
|
||
ALTER EVENT intact_check_1 ON SCHEDULE EVERY 8 HOUR DO SELECT 8;
|
||
ERROR 42S02: Table 'mysql.event' doesn't exist
|
||
ALTER EVENT intact_check_1 RENAME TO intact_check_2;
|
||
ERROR 42S02: Table 'mysql.event' doesn't exist
|
||
DROP EVENT intact_check_1;
|
||
ERROR 42S02: Table 'mysql.event' doesn't exist
|
||
DROP EVENT intact_check_2;
|
||
ERROR 42S02: Table 'mysql.event' doesn't exist
|
||
DROP EVENT intact_check;
|
||
ERROR 42S02: Table 'mysql.event' doesn't exist
|
||
DROP DATABASE IF EXISTS mysqltest_no_such_database;
|
||
Warnings:
|
||
Note 1008 Can't drop database 'mysqltest_no_such_database'; database doesn't exist
|
||
CREATE DATABASE mysqltest_db2;
|
||
DROP DATABASE mysqltest_db2;
|
||
Warnings:
|
||
Error 1146 Table 'mysql.event' doesn't exist
|
||
OK, there is an unnecessary warning about the non-existent table
|
||
but it's not easy to fix and no one complained about it.
|
||
A similar warning is printed if mysql.proc is missing.
|
||
SHOW WARNINGS;
|
||
Level Code Message
|
||
Error 1146 Table 'mysql.event' doesn't exist
|
||
SELECT @@event_scheduler;
|
||
@@event_scheduler
|
||
OFF
|
||
SHOW VARIABLES LIKE 'event_scheduler';
|
||
Variable_name Value
|
||
event_scheduler OFF
|
||
SET GLOBAL event_scheduler=OFF;
|
||
Restore the original table.
|
||
CREATE TABLE mysql.event like event_like;
|
||
DROP TABLE event_like;
|
||
SHOW EVENTS;
|
||
Db Name Definer Time zone Type Execute at Interval value Interval field Starts Ends Status Originator character_set_client collation_connection Database Collation
|
||
|
||
#
|
||
# Bug#12394306: the sever may crash if mysql.event is corrupted
|
||
#
|
||
|
||
CREATE EVENT ev1 ON SCHEDULE EVERY 5 HOUR DO SELECT 5;
|
||
ALTER EVENT ev1 ON SCHEDULE EVERY 8 HOUR DO SELECT 8;
|
||
|
||
CREATE TABLE event_original LIKE mysql.event;
|
||
INSERT INTO event_original SELECT * FROM mysql.event;
|
||
|
||
ALTER TABLE mysql.event MODIFY modified CHAR(1);
|
||
Warnings:
|
||
Warning 1265 Data truncated for column 'modified' at row 1
|
||
|
||
SHOW EVENTS;
|
||
ERROR HY000: Failed to open mysql.event
|
||
|
||
SELECT event_name, created, last_altered FROM information_schema.events;
|
||
ERROR HY000: Failed to open mysql.event
|
||
|
||
CREATE EVENT ev2 ON SCHEDULE EVERY 5 HOUR DO SELECT 5;
|
||
ERROR HY000: Failed to open mysql.event
|
||
|
||
ALTER EVENT ev1 ON SCHEDULE EVERY 9 HOUR DO SELECT 9;
|
||
ERROR HY000: Failed to open mysql.event
|
||
|
||
DROP TABLE mysql.event;
|
||
RENAME TABLE event_original TO mysql.event;
|
||
|
||
DROP EVENT ev1;
|
||
|
||
SHOW EVENTS;
|
||
Db Name Definer Time zone Type Execute at Interval value Interval field Starts Ends Status Originator character_set_client collation_connection Database Collation
|
||
|
||
#
|
||
# End of tests
|
||
#
|
||
drop database events_test;
|