avg_bytes, avg_rows_scanned, avg_cpu_seconds FROM spanner_sys.query_stats_top_minute ORDER BY interval_end DESC; https://cloud.google.com/spanner/docs/introspection/query-statistics
avg_bytes, avg_rows_scanned, avg_cpu_seconds FROM spanner_sys.query_stats_top_minute ORDER BY interval_end DESC; クエリごとに集計したCPU負荷の統計 すべてのクエリを集計した統計 https://cloud.google.com/spanner/docs/introspection/query-statistics