From b0c839de543f321828bfd53560b241b60309726d Mon Sep 17 00:00:00 2001
From: lihui <huili@taosdata.com>
Date: Sat, 28 Dec 2019 16:33:28 +0800
Subject: [PATCH] [#1029 TBASE-1431]

---
 src/system/detail/src/vnodeQueryImpl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/system/detail/src/vnodeQueryImpl.c b/src/system/detail/src/vnodeQueryImpl.c
index ba1574f3f6..e4e2add572 100644
--- a/src/system/detail/src/vnodeQueryImpl.c
+++ b/src/system/detail/src/vnodeQueryImpl.c
@@ -3379,6 +3379,8 @@ void forwardQueryStartPosition(SQueryRuntimeEnv *pRuntimeEnv) {
     updateOffsetVal(pRuntimeEnv, &blockInfo, pBlock);
   } else {
     pQuery->limit.offset -= maxReads;
+    // update the lastkey, since the following skip operation may traverse to another media. update the lastkey first.
+    pQuery->lastKey = (QUERY_IS_ASC_QUERY(pQuery))? blockInfo.keyLast+1:blockInfo.keyFirst-1;    
     doSkipDataBlock(pRuntimeEnv);
   }
 }
-- 
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