refactor: make Selection Copy

data_types/src/selection.rs

@@ -1,4 +1,4 @@
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Copy)]
 /// A collection of columns to include in query results.
 ///
 /// The `All` variant denotes that the caller wishes to include all table

query/src/frontend/influxrpc.rs

@@ -522,7 +522,7 @@ impl InfluxRPCPlanner {
             );
 
             let chunk_table_schema = chunk
-                .table_schema(table_name, selection.clone())
+                .table_schema(table_name, selection)
                 .await
                 .map_err(|e| Box::new(e) as _)
                 .context(GettingTableSchema {

server/src/db/chunk.rs

@@ -246,7 +246,7 @@ impl PartitionChunk for DBChunk {
                 // Note Mutable buffer doesn't support predicate
                 // pushdown (other than pruning out the entire chunk
                 // via `might_pass_predicate)
-                let schema: Schema = self.table_schema(table_name, selection.clone()).await?;
+                let schema: Schema = self.table_schema(table_name, selection).await?;
 
                 Ok(Box::pin(MutableBufferChunkStream::new(
                     Arc::clone(&chunk),