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SELECT * FROM `schema_unused_indexes`

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object_schema	object_name	index_name
performance_schema	data_lock_waits	REQUESTING_ENGINE_LOCK_ID
performance_schema	data_lock_waits	BLOCKING_ENGINE_LOCK_ID
performance_schema	data_lock_waits	REQUESTING_ENGINE_TRANSACTION_ID
performance_schema	data_lock_waits	BLOCKING_THREAD_ID
performance_schema	data_lock_waits	BLOCKING_ENGINE_TRANSACTION_ID
performance_schema	data_lock_waits	REQUESTING_THREAD_ID
performance_schema	data_locks	ENGINE_TRANSACTION_ID
performance_schema	data_locks	THREAD_ID
performance_schema	data_locks	OBJECT_SCHEMA
performance_schema	file_instances	EVENT_NAME
performance_schema	file_summary_by_instance	FILE_NAME
performance_schema	file_summary_by_instance	EVENT_NAME
performance_schema	metadata_locks	OWNER_THREAD_ID
performance_schema	metadata_locks	OBJECT_TYPE
performance_schema	replication_applier_status_by_worker	THREAD_ID
performance_schema	replication_connection_status	THREAD_ID
performance_schema	rwlock_instances	NAME
performance_schema	rwlock_instances	WRITE_LOCKED_BY_THREAD_ID
performance_schema	socket_instances	SOCKET_ID
performance_schema	socket_instances	IP
performance_schema	socket_instances	THREAD_ID
performance_schema	table_handles	OBJECT_TYPE
performance_schema	table_handles	OWNER_THREAD_ID
performance_schema	threads	PROCESSLIST_ACCOUNT
performance_schema	threads	PROCESSLIST_HOST

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