From 019d737f0756f872b1724e2a6dd74af241f4b3f6 Mon Sep 17 00:00:00 2001
From: Willy-J <32266792+Willy-J@users.noreply.github.com>
Date: Wed, 18 Jun 2025 15:03:40 +0800
Subject: [PATCH] (fix)(headless) add empty check for metric alias to prevent
 incorrect DataFormatType assignment

---
 .../tencent/supersonic/headless/server/utils/QueryUtils.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/QueryUtils.java b/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/QueryUtils.java
index 75f3ca44f..e6b89a7fd 100644
--- a/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/QueryUtils.java
+++ b/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/QueryUtils.java
@@ -109,7 +109,7 @@ public class QueryUtils {
                     column.setModelId(metric.getModelId());
                 }
                 // if column nameEn contains metric alias, use metric dataFormatType
-                if (column.getDataFormatType() == null && metric.getAlias() != null) {
+                if (column.getDataFormatType() == null && StringUtils.isNotEmpty(metric.getAlias())) {
                     for (String alias : metric.getAlias().split(",")) {
                         if (nameEn.contains(alias)) {
                             column.setDataFormatType(metric.getDataFormatType());