From 3093726c5a86eab77778d9a6c8471b1840ca6bb7 Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Thu, 27 Apr 2023 11:49:00 +0800
Subject: [PATCH] fix(query): init row merger for tsdbread.

---
 source/dnode/vnode/src/tsdb/tsdbRead.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index ab368cd4aa..a46f7a7924 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -4449,6 +4449,10 @@ static void setSharedPtr(STsdbReader* pDst, const STsdbReader* pSrc) {
   pDst->pSchema = pSrc->pSchema;
   pDst->pSchemaMap = pSrc->pSchemaMap;
   pDst->pReadSnap = pSrc->pReadSnap;
+
+  if (pDst->pSchema) {
+    tsdbRowMergerInit(&pDst->status.merger, pDst->pSchema);
+  }
 }
 
 void tsdbReaderClose(STsdbReader* pReader) {