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在处理问题时遇到这个报错
InnoDB: Error: Fetch of persistent statistics requested for table "mytest"."pomstd" but the required system tables mysql.innodb_table_stats and mysql.innodb_index_stats are not present or have unexpected structure. Using transient stats insttestd.
InnoDB: Error: Table "mysql"."innodb_table_stats" not found.
InnoDB: Recalculation of persistent statistics requested for table "mytest"."pomstd" but the required persistent statistics storage is not present or is corrupted. Using transient stats insttestd.

检查目录，没有找到这个文件
这是mysql5.6新增的性能分析文件，通常处理办法就是创建此文件：
CREATE TABLE `innodb_table_stats` (
   `database_name` varchar(64) COLLATE utf8_bin NOT NULL,
   `table_name` varchar(64) COLLATE utf8_bin NOT NULL,
   `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   `n_rows` bigint(20) unsigned NOT NULL,
   `clustered_index_size` bigint(20) unsigned NOT NULL,
   `sum_of_other_index_sizes` bigint(20) unsigned NOT NULL,
   PRIMARY KEY (`database_name`,`table_name`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin STATS_PERSISTENT=0;

CREATE TABLE `innodb_index_stats` (
   `database_name` varchar(64) COLLATE utf8_bin NOT NULL,
   `table_name` varchar(64) COLLATE utf8_bin NOT NULL,
   `index_name` varchar(64) COLLATE utf8_bin NOT NULL,
   `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   `stat_name` varchar(64) COLLATE utf8_bin NOT NULL,
   `stat_value` bigint(20) unsigned NOT NULL,
   `sample_size` bigint(20) unsigned DEFAULT NULL,
   `stat_description` varchar(1024) COLLATE utf8_bin NOT NULL,
   PRIMARY KEY (`database_name`,`table_name`,`index_name`,`stat_name`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin STATS_PERSISTENT=0;

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