解决mysql建立事件时出现 “Cannot proceed because system tables used by Event Scheduler were found damaged at server start” 的错误

参照/article/6499928.html，但是存在问题，修改其中的SQL如下：

DROP TABLE IF EXISTS `event`;
CREATE TABLE `event` (
`db` char(64) 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,
`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',
'SLAVESIDE_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',
'NO_ENGINE_SUBSTITUTION',
'PAD_CHAR_TO_FULL_LENGTH'
) NOT NULL DEFAULT '',
`comment` char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '',
`originator` int(10) unsigned NOT NULL,
`time_zone` char(64) CHARACTER SET latin1 NOT NULL DEFAULT 'SYSTEM',
`character_set_client` char(32) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
`collation_connection` char(32) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
`db_collation` char(32) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
`body_utf8` longblob, PRIMARY KEY (`db`,`name`)) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='Events';