From eff2bf0c242f10e250de5940d75e1c3d7cd8d8e6 Mon Sep 17 00:00:00 2001
From: Hengfei Yang <hengfei.yang@gmail.com>
Date: Tue, 7 Feb 2023 12:26:41 +0800
Subject: [PATCH] fix: panic when result is empty (#26)

---
 src/meta/telemetry.rs      | 2 +-
 src/service/search/exec.rs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/meta/telemetry.rs b/src/meta/telemetry.rs
index 6afba3236b..558eebecc9 100644
--- a/src/meta/telemetry.rs
+++ b/src/meta/telemetry.rs
@@ -1,6 +1,6 @@
-use std::collections::HashMap;
 use segment::{message::Track, Client, Message};
 use serde_json::Value;
+use std::collections::HashMap;
 
 use crate::infra::config::{CONFIG, INSTANCE_ID, STREAM_SCHEMAS, TELEMETRY_CLIENT, USERS, VERSION};
 
diff --git a/src/service/search/exec.rs b/src/service/search/exec.rs
index 8a18d0def7..86b251d864 100644
--- a/src/service/search/exec.rs
+++ b/src/service/search/exec.rs
@@ -148,7 +148,7 @@ pub async fn search(
         Some(batches) => batches.to_owned(),
         None => Vec::new(),
     };
-    if !result_query.is_empty() {
+    if !result_query.is_empty() && !result_query[0].is_empty() {
         let schema = result_query[0][0].schema();
         let ipc_options = ipc::writer::IpcWriteOptions::default();
         let ipc_options = ipc_options