https://docs.pingcap.com/zh/tidb/stable/mysql-schema
table_cache_meta
重复说明,建议把下面的删掉
缺少其他的一些表
advisory_locks
dist_framework_meta
load_data_jobs
plan_replayer_status
plan_replayer_task
stats_history
stats_meta_history
stats_table_locked
tidb_background_subtask
tidb_background_subtask_history
tidb_ddl_history
tidb_ddl_job
tidb_ddl_reorg
tidb_global_task
tidb_global_task_history