executors: better use header
use std::sync::Arc;
use crate::contexts::FuseQueryContext;
-use crate::error::FuseQueryError;
-use crate::error::FuseQueryResult;
+use crate::error::{FuseQueryError, FuseQueryResult};
use crate::executors::{ExplainExecutor, IExecutor, SelectExecutor};
use crate::planners::PlanNode;
