diff --git a/source/dnode/vnode/src/tsdb/tsdbMergeTree.c b/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
index ea5b574ceda600b7322cc97f75b3947f25dc3fe5..bbb5ce79fab05ef2ed84555a567f218417980181 100644
--- a/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
+++ b/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
@@ -15,6 +15,7 @@
 
 #include "tsdb.h"
 #include "tsdbFSet2.h"
+#include "tsdbMerge.h"
 #include "tsdbReadUtil.h"
 #include "tsdbSttFileRW.h"
 
@@ -352,10 +353,14 @@ static int32_t extractSttBlockInfo(SLDataIter *pIter, const TSttBlkArray *pArray
   return TSDB_CODE_SUCCESS;
 }
 
-static int32_t uidComparFn(const void *p1, const void *p2) {
-  const uint64_t *uid1 = p1;
+static int32_t suidComparFn(const void *target, const void *p2) {
+  const uint64_t *targetUid = target;
   const uint64_t *uid2 = p2;
-  return (*uid1) - (*uid2);
+  if (*uid2 == (*targetUid)) {
+    return 0;
+  } else {
+    return (*targetUid) < (*uid2) ? -1:1;
+  }
 }
 
 static bool existsFromSttBlkStatis(const TStatisBlkArray *pStatisBlkArray, uint64_t suid, uint64_t uid,
@@ -372,17 +377,6 @@ static bool existsFromSttBlkStatis(const TStatisBlkArray *pStatisBlkArray, uint6
     }
   }
 
-  //  for (; i < TARRAY2_SIZE(pStatisBlkArray); ++i) {
-  //    SStatisBlk *p = &pStatisBlkArray->data[i];
-  //    if (p->minTbid.uid <= uid && p->maxTbid.uid >= uid) {
-  //      break;
-  //    }
-  //
-  //    if (p->maxTbid.uid < uid) {
-  //      break;
-  //    }
-  //  }
-
   if (i >= TARRAY2_SIZE(pStatisBlkArray)) {
     return false;
   }
@@ -391,10 +385,39 @@ static bool existsFromSttBlkStatis(const TStatisBlkArray *pStatisBlkArray, uint6
   STbStatisBlock block = {0};
   tsdbSttFileReadStatisBlock(pReader, p, &block);
 
-  int32_t index = tarray2SearchIdx(block.uid, &uid, sizeof(int64_t), uidComparFn, TD_EQ);
-  tStatisBlockDestroy(&block);
+  int32_t index = tarray2SearchIdx(block.suid, &suid, sizeof(int64_t), suidComparFn, TD_EQ);
+  if (index == -1) {
+    tStatisBlockDestroy(&block);
+    return false;
+  }
+  
+  int32_t j = index;
+  if (block.uid->data[j] == uid) {
+    tStatisBlockDestroy(&block);
+    return true;
+  } else if (block.uid->data[j] > uid) {
+    while (j >= 0 && block.suid->data[j] == suid) {
+      if (block.uid->data[j] == uid) {
+        tStatisBlockDestroy(&block);
+        return true;
+      } else {
+        j -= 1;
+      }
+    }
+  } else {
+    j = index + 1;
+    while (j < block.suid->size && block.suid->data[j] == suid) {
+      if (block.uid->data[j] == uid) {
+        tStatisBlockDestroy(&block);
+        return true;
+      } else {
+        j += 1;
+      }
+    }
+  }
 
-  return (index != -1);
+  tStatisBlockDestroy(&block);
+  return false;
 }
 
 int32_t tLDataIterOpen2(struct SLDataIter *pIter, SSttFileReader *pSttFileReader, int32_t iStt, int8_t backward,
@@ -445,12 +468,12 @@ int32_t tLDataIterOpen2(struct SLDataIter *pIter, SSttFileReader *pSttFileReader
     tsdbDebug("load the stt file info completed, elapsed time:%.2fms, %s", el, idStr);
   }
 
-  //  bool exists = existsFromSttBlkStatis(pBlockLoadInfo->pSttStatisBlkArray, suid, uid, pIter->pReader);
-  //  if (!exists) {
-  //    pIter->iSttBlk = -1;
-  //    pIter->pSttBlk = NULL;
-  //    return TSDB_CODE_SUCCESS;
-  //  }
+  bool exists = existsFromSttBlkStatis(pBlockLoadInfo->pSttStatisBlkArray, suid, uid, pIter->pReader);
+  if (!exists) {
+    pIter->iSttBlk = -1;
+    pIter->pSttBlk = NULL;
+    return TSDB_CODE_SUCCESS;
+  }
 
   // find the start block, actually we could load the position to avoid repeatly searching for the start position when
   // the skey is updated.