diff --git a/include/os/osMath.h b/include/os/osMath.h
index e13c32422e..b0c75f4dd7 100644
--- a/include/os/osMath.h
+++ b/include/os/osMath.h
@@ -60,6 +60,13 @@ extern "C" {
   })
 #endif
 
+#ifndef __COMPAR_FN_T
+#define __COMPAR_FN_T
+typedef int32_t (*__compar_fn_t)(const void *, const void *);
+#endif
+
+void taosSort(void* arr, int64_t sz, int64_t width, __compar_fn_t compar);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/common/src/tdatablock.c b/source/common/src/tdatablock.c
index 7b142e3053..0ec63e90af 100644
--- a/source/common/src/tdatablock.c
+++ b/source/common/src/tdatablock.c
@@ -892,7 +892,7 @@ int32_t blockDataSort(SSDataBlock* pDataBlock, SArray* pOrderInfo) {
         int64_t p0 = taosGetTimestampUs();
 
         __compar_fn_t fn = getKeyComparFunc(pColInfoData->info.type, pOrder->order);
-        qsort(pColInfoData->pData, pDataBlock->info.rows, pColInfoData->info.bytes, fn);
+        taosSort(pColInfoData->pData, pDataBlock->info.rows, pColInfoData->info.bytes, fn);
 
         int64_t p1 = taosGetTimestampUs();
         uDebug("blockDataSort easy cost:%" PRId64 ", rows:%d\n", p1 - p0, pDataBlock->info.rows);
diff --git a/source/common/src/tdataformat.c b/source/common/src/tdataformat.c
index 7c1b31b6e4..83ae442ae7 100644
--- a/source/common/src/tdataformat.c
+++ b/source/common/src/tdataformat.c
@@ -931,9 +931,9 @@ int32_t tTagNew(SArray *pArray, int32_t version, int8_t isJson, STag **ppTag) {
 
   // sort
   if (isJson) {
-    qsort(pArray->pData, nTag, sizeof(STagVal), tTagValJsonCmprFn);
+    taosSort(pArray->pData, nTag, sizeof(STagVal), tTagValJsonCmprFn);
   } else {
-    qsort(pArray->pData, nTag, sizeof(STagVal), tTagValCmprFn);
+    taosSort(pArray->pData, nTag, sizeof(STagVal), tTagValCmprFn);
   }
 
   // get size
diff --git a/source/libs/executor/src/executil.c b/source/libs/executor/src/executil.c
index 2561516f6a..415df595e9 100644
--- a/source/libs/executor/src/executil.c
+++ b/source/libs/executor/src/executil.c
@@ -118,7 +118,7 @@ void initGroupedResultInfo(SGroupResInfo* pGroupResInfo, SHashObj* pHashmap, int
 
   if (order == TSDB_ORDER_ASC || order == TSDB_ORDER_DESC) {
     __compar_fn_t fn = (order == TSDB_ORDER_ASC) ? resultrowComparAsc : resultrowComparDesc;
-    qsort(pGroupResInfo->pRows->pData, taosArrayGetSize(pGroupResInfo->pRows), POINTER_BYTES, fn);
+    taosSort(pGroupResInfo->pRows->pData, taosArrayGetSize(pGroupResInfo->pRows), POINTER_BYTES, fn);
   }
 
   pGroupResInfo->index = 0;
diff --git a/source/libs/function/src/taggfunction.c b/source/libs/function/src/taggfunction.c
index 47ae07f823..c8998b9d94 100644
--- a/source/libs/function/src/taggfunction.c
+++ b/source/libs/function/src/taggfunction.c
@@ -1887,10 +1887,10 @@ static void top_bottom_func_finalizer(SqlFunctionCtx *pCtx) {
   // user specify the order of output by sort the result according to timestamp
   if (pCtx->param[1].param.i == PRIMARYKEY_TIMESTAMP_COL_ID) {
     __compar_fn_t comparator = (pCtx->param[2].param.i == TSDB_ORDER_ASC) ? resAscComparFn : resDescComparFn;
-    qsort(tvp, (size_t)pResInfo->numOfRes, POINTER_BYTES, comparator);
+    taosSort(tvp, (size_t)pResInfo->numOfRes, POINTER_BYTES, comparator);
   } else /*if (pCtx->param[1].param.i > PRIMARYKEY_TIMESTAMP_COL_ID)*/ {
     __compar_fn_t comparator = (pCtx->param[2].param.i == TSDB_ORDER_ASC) ? resDataAscComparFn : resDataDescComparFn;
-    qsort(tvp, (size_t)pResInfo->numOfRes, POINTER_BYTES, comparator);
+    taosSort(tvp, (size_t)pResInfo->numOfRes, POINTER_BYTES, comparator);
   }
   
   GET_TRUE_DATA_TYPE();
diff --git a/source/libs/function/src/tpercentile.c b/source/libs/function/src/tpercentile.c
index b40dd8b78d..057d2bc7dc 100644
--- a/source/libs/function/src/tpercentile.c
+++ b/source/libs/function/src/tpercentile.c
@@ -44,7 +44,7 @@ static SFilePage *loadDataFromFilePage(tMemBucket *pMemBucket, int32_t slotIdx)
     offset += (int32_t)(pg->num * pMemBucket->bytes);
   }
 
-  qsort(buffer->data, pMemBucket->pSlots[slotIdx].info.size, pMemBucket->bytes, pMemBucket->comparFn);
+  taosSort(buffer->data, pMemBucket->pSlots[slotIdx].info.size, pMemBucket->bytes, pMemBucket->comparFn);
   return buffer;
 }
 
diff --git a/source/libs/parser/src/parInsert.c b/source/libs/parser/src/parInsert.c
index b97f1df38b..a76640d0b5 100644
--- a/source/libs/parser/src/parInsert.c
+++ b/source/libs/parser/src/parInsert.c
@@ -790,11 +790,11 @@ static int32_t parseBoundColumns(SInsertParseContext* pCxt, SParsedDataColInfo*
       pColIdx[i].schemaColIdx = pColList->boundColumns[i];
       pColIdx[i].boundIdx = i;
     }
-    qsort(pColIdx, pColList->numOfBound, sizeof(SBoundIdxInfo), schemaIdxCompar);
+    taosSort(pColIdx, pColList->numOfBound, sizeof(SBoundIdxInfo), schemaIdxCompar);
     for (col_id_t i = 0; i < pColList->numOfBound; ++i) {
       pColIdx[i].finalIdx = i;
     }
-    qsort(pColIdx, pColList->numOfBound, sizeof(SBoundIdxInfo), boundIdxCompar);
+    taosSort(pColIdx, pColList->numOfBound, sizeof(SBoundIdxInfo), boundIdxCompar);
   }
 
   if (pColList->numOfCols > pColList->numOfBound) {
@@ -2232,11 +2232,11 @@ static int32_t smlBoundColumnData(SArray* cols, SParsedDataColInfo* pColList, SS
       pColIdx[i].schemaColIdx = pColList->boundColumns[i];
       pColIdx[i].boundIdx = i;
     }
-    qsort(pColIdx, pColList->numOfBound, sizeof(SBoundIdxInfo), schemaIdxCompar);
+    taosSort(pColIdx, pColList->numOfBound, sizeof(SBoundIdxInfo), schemaIdxCompar);
     for (col_id_t i = 0; i < pColList->numOfBound; ++i) {
       pColIdx[i].finalIdx = i;
     }
-    qsort(pColIdx, pColList->numOfBound, sizeof(SBoundIdxInfo), boundIdxCompar);
+    taosSort(pColIdx, pColList->numOfBound, sizeof(SBoundIdxInfo), boundIdxCompar);
   }
 
   if (pColList->numOfCols > pColList->numOfBound) {
diff --git a/source/libs/parser/src/parInsertData.c b/source/libs/parser/src/parInsertData.c
index 56301c072c..84bcef7185 100644
--- a/source/libs/parser/src/parInsertData.c
+++ b/source/libs/parser/src/parInsertData.c
@@ -295,7 +295,7 @@ void sortRemoveDataBlockDupRowsRaw(STableDataBlocks* dataBuf) {
     char* pBlockData = pBlocks->data;
 
     // todo. qsort is unstable, if timestamp is same, should get the last one
-    qsort(pBlockData, pBlocks->numOfRows, dataBuf->rowSize, rowDataCompar);
+    taosSort(pBlockData, pBlocks->numOfRows, dataBuf->rowSize, rowDataCompar);
 
     int32_t i = 0;
     int32_t j = 1;
@@ -365,7 +365,7 @@ int sortRemoveDataBlockDupRows(STableDataBlocks* dataBuf, SBlockKeyInfo* pBlkKey
     pBlkKeyTuple = pBlkKeyInfo->pKeyTuple;
 
     // todo. qsort is unstable, if timestamp is same, should get the last one
-    qsort(pBlkKeyTuple, nRows, sizeof(SBlockKeyTuple), rowDataComparStable);
+    taosSort(pBlkKeyTuple, nRows, sizeof(SBlockKeyTuple), rowDataComparStable);
 
     pBlkKeyTuple = pBlkKeyInfo->pKeyTuple;
     int32_t i = 0;
diff --git a/source/libs/scalar/src/filter.c b/source/libs/scalar/src/filter.c
index b8bcae161b..9897acfe1a 100644
--- a/source/libs/scalar/src/filter.c
+++ b/source/libs/scalar/src/filter.c
@@ -2059,7 +2059,7 @@ int32_t filterMergeGroupUnits(SFilterInfo *info, SFilterGroupCtx** gRes, int32_t
     }
 
     if (colIdxi > 1) {
-      qsort(colIdx, colIdxi, sizeof(uint32_t), getComparFunc(TSDB_DATA_TYPE_USMALLINT, 0));
+      taosSort(colIdx, colIdxi, sizeof(uint32_t), getComparFunc(TSDB_DATA_TYPE_USMALLINT, 0));
     }
 
     for (uint32_t l = 0; l < colIdxi; ++l) {
@@ -2294,7 +2294,7 @@ int32_t filterMergeGroups(SFilterInfo *info, SFilterGroupCtx** gRes, int32_t *gR
     return TSDB_CODE_SUCCESS;
   }
 
-  qsort(gRes, *gResNum, POINTER_BYTES, filterCompareGroupCtx);
+  taosSort(gRes, *gResNum, POINTER_BYTES, filterCompareGroupCtx);
 
   int32_t pEnd = 0, cStart = 0, cEnd = 0;
   uint32_t pColNum = 0, cColNum = 0; 
diff --git a/source/os/src/osMath.c b/source/os/src/osMath.c
new file mode 100644
index 0000000000..98cd63a831
--- /dev/null
+++ b/source/os/src/osMath.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define ALLOW_FORBID_FUNC
+#define _DEFAULT_SOURCE
+#include "os.h"
+
+#ifdef WINDOWS
+void swapStr(char* j, char* J, int width) {
+  int  i;
+  char tmp;
+  for (i = 0; i < width; i++) {
+    tmp = *j;
+    *j = *J;
+    *J = tmp;
+    j++;
+    J++;
+  }
+}
+#endif
+
+void taosSort(void* arr, int64_t sz, int64_t width, __compar_fn_t compar) {
+#ifdef WINDOWS
+  int64_t i, j;
+  for (i = 0; i < sz - 1; i++) {
+    for (j = 0; j < sz - 1 - i; j++) {
+      if (compar((char*)arr + j * width, (char*)arr + (j + 1) * width) > 0.00) {
+        swapStr((char*)arr + j * width, (char*)arr + (j + 1) * width, width);
+      }
+    }
+  }
+#else
+  qsort(arr, sz, width, compar);
+#endif
+}
diff --git a/source/util/src/tarray.c b/source/util/src/tarray.c
index ec90e5a9b9..23e79da948 100644
--- a/source/util/src/tarray.c
+++ b/source/util/src/tarray.c
@@ -373,7 +373,7 @@ void taosArraySort(SArray* pArray, __compar_fn_t compar) {
   assert(pArray != NULL);
   assert(compar != NULL);
 
-  qsort(pArray->pData, pArray->size, pArray->elemSize, compar);
+  taosSort(pArray->pData, pArray->size, pArray->elemSize, compar);
 }
 
 void* taosArraySearch(const SArray* pArray, const void* key, __compar_fn_t comparFn, int32_t flags) {
@@ -390,7 +390,7 @@ int32_t taosArraySearchIdx(const SArray* pArray, const void* key, __compar_fn_t
 
 void taosArraySortString(SArray* pArray, __compar_fn_t comparFn) {
   assert(pArray != NULL);
-  qsort(pArray->pData, pArray->size, pArray->elemSize, comparFn);
+  taosSort(pArray->pData, pArray->size, pArray->elemSize, comparFn);
 }
 
 char* taosArraySearchString(const SArray* pArray, const char* key, __compar_fn_t comparFn, int32_t flags) {
diff --git a/source/util/src/tdigest.c b/source/util/src/tdigest.c
index 56b113fd8f..a722cfeee2 100644
--- a/source/util/src/tdigest.c
+++ b/source/util/src/tdigest.c
@@ -124,7 +124,7 @@ void tdigestCompress(TDigest *t) {
     t->num_buffered_pts = 0;
     t->total_weight += unmerged_weight;
 
-    qsort(unmerged_centroids, num_unmerged, sizeof(SCentroid), cmpCentroid);
+    taosSort(unmerged_centroids, num_unmerged, sizeof(SCentroid), cmpCentroid);
     memset(&args, 0, sizeof(SMergeArgs));
     args.centroids = (SCentroid*)taosMemoryMalloc((size_t)(sizeof(SCentroid) * t->size));
     memset(args.centroids, 0, (size_t)(sizeof(SCentroid) * t->size));
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index 3ab307dc3f..58de4970a0 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -614,7 +614,7 @@ static int32_t taosCompareTaosError(const void* a, const void* b) {
 static TdThreadOnce tsErrorInit = PTHREAD_ONCE_INIT;
 
 static void tsSortError(void) {
-  qsort(errors, sizeof(errors) / sizeof(errors[0]), sizeof(errors[0]), taosCompareTaosError);
+  taosSort(errors, sizeof(errors) / sizeof(errors[0]), sizeof(errors[0]), taosCompareTaosError);
 }
 
 const char* tstrerror(int32_t err) {