[google-cloud-sql-discuss] Error truncating performance_schema tables

Hi all, 

I'm using 2nd Gen MySQL 5.7. I want to collect data from performance_schema tables, such as "events_statements_summary_by_digest". However, this table has a max size and I think it will require periodic truncation to insert new rows. But when I run truncate table or delete command on this table, I get permission denied error

mysql> truncate table performance_schema.events_statements_summary_by_digest ; ERROR 1227 (42000): Access denied; you need (at least one of) the SUPER privilege(s) for this operation

Without deleting old rows, we won't really be able to use perf schema as it'll fill all the rows quickly. Is there a way to delete rows from this table? Are folks able to use performance schema without periodic truncation? 

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