Quick format fix

Quick format fix

Author: lanlou1554

optd-persistent/src/lib.rs

@@ -15,11 +15,13 @@ pub use cost_model::interface::CostModelStorageLayer;
 
 pub type StorageResult<T> = Result<T, BackendError>;
 
+#[derive(Debug)]
 pub enum CostModelError {
     // TODO: Add more error types
     UnknownStatisticType,
 }
 
+#[derive(Debug)]
 pub enum BackendError {
     CostModel(CostModelError),
     Database(DbErr),

optd-persistent/src/migrator/cost_model/m20241029_000001_statistic.rs

@@ -19,6 +19,7 @@ pub enum Statistic {
     // 0 if a table statistic.
     NumberOfAttributes,
     // TODO(lanlou): Should we make another table to explain the type mapping?
+    #[allow(clippy::enum_variant_names)]
     StatisticType,
     // Store the sorted attribute ids of this statistic, to support quick lookup (OR we can use junction table to look up)
     // For example, if we want to store the statistic of attributes [1, 2, 3], we can store it as "1,2,3".