diff --git a/src/util/inc/tarray.h b/src/util/inc/tarray.h
index eed165240c06a35c958cbd4e4e1b25c744c55fa8..96bcd64c3ecc4f559bf99ad78cc655b2bca64b6f 100644
--- a/src/util/inc/tarray.h
+++ b/src/util/inc/tarray.h
@@ -25,6 +25,7 @@ extern "C" {
 
 #define TARRAY_MIN_SIZE 8
 #define TARRAY_GET_ELEM(array, index) ((void*)((char*)((array)->pData) + (index) * (array)->elemSize))
+#define TARRAY_ELEM_IDX(array, ele) (POINTER_DISTANCE(ele, (array)->pData) / (array)->elemSize)
 
 typedef struct SArray {
   size_t size;
@@ -93,6 +94,14 @@ size_t taosArrayGetSize(const SArray* pArray);
  */
 void* taosArrayInsert(SArray* pArray, size_t index, void* pData);
 
+/**
+ * set data in array
+ * @param pArray
+ * @param index
+ * @param pData
+ */
+void* taosArraySet(SArray* pArray, size_t index, void* pData);
+
 /**
  * remove data entry of the given index
  * @param pArray
diff --git a/src/util/src/tarray.c b/src/util/src/tarray.c
index 35b66bd905cf77d45fc54e81019bb81481ef06dc..df6d7b0ba2e6c6e60932eab82d2445f7846cc716 100644
--- a/src/util/src/tarray.c
+++ b/src/util/src/tarray.c
@@ -133,6 +133,11 @@ void* taosArrayInsert(SArray* pArray, size_t index, void* pData) {
   return dst;
 }
 
+void* taosArraySet(SArray* pArray, size_t index, void* pData) {
+  assert(index < pArray->size);
+  memcpy(TARRAY_GET_ELEM(pArray, index), pData, pArray->elemSize);
+}
+
 void taosArrayRemove(SArray* pArray, size_t index) {
   assert(index < pArray->size);