diff --git a/src/system/detail/inc/vnodeTagMgmt.h b/src/system/detail/inc/vnodeTagMgmt.h
index 02d9779d159e313528258e5cd492f1e126d81e3d..b801d1c5412d68ff52fc5e9c0ad33b8b23a6a469 100644
--- a/src/system/detail/inc/vnodeTagMgmt.h
+++ b/src/system/detail/inc/vnodeTagMgmt.h
@@ -32,15 +32,6 @@ extern "C" {
  * Note:
  * 1. we implement a quick sort algorithm, may remove it later.
  */
-
-//typedef struct tTagSchema {
-//  struct SSchema *pSchema;
-//  int32_t         numOfCols;
-//  int32_t         colOffset[];
-//} tTagSchema;
-
-typedef SColumnModel tTagSchema;
-
 typedef struct tSidSet {
   int32_t            numOfSids;
   int32_t            numOfSubSet;
@@ -56,8 +47,6 @@ typedef int32_t (*__ext_compar_fn_t)(const void *p1, const void *p2, void *param
 tSidSet *tSidSetCreate(struct SMeterSidExtInfo **pMeterSidExtInfo, int32_t numOfMeters, SSchema *pSchema,
                        int32_t numOfTags, SColIndexEx *colList, int32_t numOfOrderCols);
 
-//tTagSchema *tCreateTagSchema(SSchema *pSchema, int32_t numOfTagCols);
-
 int32_t *calculateSubGroup(void **pSids, int32_t numOfMeters, int32_t *numOfSubset, tOrderDescriptor *pOrderDesc,
                            __ext_compar_fn_t compareFn);
 
diff --git a/src/system/detail/src/vnodeTagMgmt.c b/src/system/detail/src/vnodeTagMgmt.c
index 58d1be677a0c5707e13e5eec62336abcc1db3e0b..5585813ec377571f8415ba6b949bb158285b1d3e 100644
--- a/src/system/detail/src/vnodeTagMgmt.c
+++ b/src/system/detail/src/vnodeTagMgmt.c
@@ -27,7 +27,7 @@
 #define GET_TAG_VAL_POINTER(s, col, sc, t) ((t *)(&((s)->tags[getColumnModelOffset(sc, col)])))
 #define GET_TAG_VAL(s, col, sc, t) (*GET_TAG_VAL_POINTER(s, col, sc, t))
 
-static void tTagsPrints(SMeterSidExtInfo *pMeterInfo, tTagSchema *pSchema, SColumnOrderInfo *pOrder);
+static void tTagsPrints(SMeterSidExtInfo *pMeterInfo, SColumnModel *pSchema, SColumnOrderInfo *pOrder);
 
 static void tSidSetDisplay(tSidSet *pSets);
 
@@ -241,25 +241,6 @@ int32_t *calculateSubGroup(void **pSids, int32_t numOfMeters, int32_t *numOfSubs
   return starterPos;
 }
 
-//tTagSchema *tCreateTagSchema(SSchema *pSchema, int32_t numOfTagCols) {
-//  if (numOfTagCols == 0 || pSchema == NULL) {
-//    return NULL;
-//  }
-//
-//  tTagSchema *pColumnModel =
-//      (tTagSchema *)calloc(1, sizeof(tTagSchema) + numOfTagCols * sizeof(int32_t) + sizeof(SSchema) * numOfTagCols);
-//
-//  pColumnModel->colOffset[0] = 0;
-//  pColumnModel->numOfCols = numOfTagCols;
-//  for (int32_t i = 1; i < numOfTagCols; ++i) {
-//    pColumnModel->colOffset[i] = (pColumnModel->colOffset[i - 1] + pSchema[i - 1].bytes);
-//  }
-//
-//  pColumnModel->pSchema = (SSchema *)&(pColumnModel->colOffset[numOfTagCols]);
-//  memcpy(pColumnModel->pSchema, pSchema, sizeof(SSchema) * numOfTagCols);
-//  return pColumnModel;
-//}
-
 tSidSet *tSidSetCreate(struct SMeterSidExtInfo **pMeterSidExtInfo, int32_t numOfMeters, SSchema *pSchema,
                        int32_t numOfTags, SColIndexEx *colList, int32_t numOfCols) {
   tSidSet *pSidSet = (tSidSet *)calloc(1, sizeof(tSidSet) + numOfCols * sizeof(int16_t));
@@ -296,7 +277,7 @@ void tSidSetDestroy(tSidSet **pSets) {
   }
 }
 
-void tTagsPrints(SMeterSidExtInfo *pMeterInfo, tTagSchema *pSchema, SColumnOrderInfo *pOrder) {
+void tTagsPrints(SMeterSidExtInfo *pMeterInfo, SColumnModel *pSchema, SColumnOrderInfo *pOrder) {
   if (pSchema == NULL) {
     return;
   }