diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index 39030b15d711aacb70054464d2f5a1106c147d2b..4045e302c77ecf8c942af2397247fb042d5b7928 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -2148,16 +2148,7 @@ bool tsdbNextDataBlockWithoutMerge(TsdbQueryHandleT* pHandle) {
   size_t numOfTables = taosArrayGetSize(pQueryHandle->pTableCheckInfo);
   assert(numOfTables > 0);
 
-  if (pQueryHandle->type == TSDB_QUERY_TYPE_EXTERNAL) {
-    SMemRef* pMemRef = pQueryHandle->pMemRef;
-    tsdbMayTakeMemSnapshot(pQueryHandle);
-    bool ret = getNeighborRows(pQueryHandle);
-    tsdbMayUnTakeMemSnapshot(pQueryHandle);
-
-    // restore the pMemRef
-    pQueryHandle->pMemRef = pMemRef;
-    return ret;
-  } else if (pQueryHandle->type == TSDB_QUERY_TYPE_LAST && pQueryHandle->cachelastrow) {
+  if (pQueryHandle->type == TSDB_QUERY_TYPE_LAST && pQueryHandle->cachelastrow) {
     // the last row is cached in buffer, return it directly.
     // here note that the pQueryHandle->window must be the TS_INITIALIZER
     int32_t numOfCols  = (int32_t)(QH_GET_NUM_OF_COLS(pQueryHandle));
diff --git a/tests/script/general/parser/stableOp.sim b/tests/script/general/parser/stableOp.sim
index 133de95b9cf72a307ebc12dea3ac759a6193f893..f4b1bd4b8aa67df48024b8f9fa2f4015bbb14662 100644
--- a/tests/script/general/parser/stableOp.sim
+++ b/tests/script/general/parser/stableOp.sim
@@ -1,6 +1,5 @@
 system sh/stop_dnodes.sh
 
-
 system sh/deploy.sh -n dnode1 -i 1
 system sh/cfg.sh -n dnode1 -c walLevel -v 0
 system sh/exec.sh -n dnode1 -s start
@@ -78,7 +77,6 @@ if $rows != 0 then
   return -1
 endi
 
-
 sql DROP STABLE $stb
 sql show stables