(iotdb) 01/01: fix last query bug

[shuwenwei]

This is an automated email from the ASF dual-hosted git repository.

shuwenwei pushed a commit to branch fixLastQueryBug-0123-1.3
in repository https://gitbox.apache.org/repos/asf/iotdb.git

commit 0e274ca41797a4f2e13561ede5cf4d8cfd5f8c32
Author: shuwenwei <s13979062...@gmail.com>
AuthorDate: Fri Jan 23 17:58:52 2026 +0800

    fix last query bug
---
 .../execution/operator/process/last/LastQueryOperator.java          | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git 
a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/process/last/LastQueryOperator.java
 
b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/process/last/LastQueryOperator.java
index dd41bbd7afa..d2389a00898 100644
--- 
a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/process/last/LastQueryOperator.java
+++ 
b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/process/last/LastQueryOperator.java
@@ -112,12 +112,10 @@ public class LastQueryOperator implements ProcessOperator 
{
         && !tsBlockBuilder.isFull()) {
       if (children.get(currentIndex).hasNextWithTimer()) {
         TsBlock tsBlock = children.get(currentIndex).nextWithTimer();
-        if (tsBlock == null) {
-          return null;
-        } else if (!tsBlock.isEmpty()) {
+        if (tsBlock != null && !tsBlock.isEmpty()) {
           LastQueryUtil.appendLastValue(tsBlockBuilder, tsBlock);
-          return null;
         }
+        return null;
       } else {
         children.get(currentIndex).close();
         children.set(currentIndex, null);