diff --git a/source/libs/index/inc/indexComm.h b/source/libs/index/inc/indexComm.h
index c338300b57..bcf76b4f20 100644
--- a/source/libs/index/inc/indexComm.h
+++ b/source/libs/index/inc/indexComm.h
@@ -39,13 +39,14 @@ TExeCond      tDoCompare(__compar_fn_t func, int8_t cmpType, void* a, void* b);
 
 _cache_range_compare indexGetCompare(RangeType ty);
 
-int32_t indexConvertData(void* src, int8_t type, void** dst);
-int32_t indexConvertDataToStr(void* src, int8_t type, void** dst);
+int32_t idxConvertData(void* src, int8_t type, void** dst);
+int32_t idxConvertDataToStr(void* src, int8_t type, void** dst);
 
-int32_t indexGetDataByteLen(int8_t type);
+int32_t idxGetDataByteLen(int8_t type);
 
-char* indexInt2str(int64_t val, char* dst, int radix);
+char* idxInt2str(int64_t val, char* dst, int radix);
 
+int idxUidCompare(const void* a, const void* b);
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/libs/index/src/.indexFilter.c.swo b/source/libs/index/src/.indexFilter.c.swo
new file mode 100644
index 0000000000..c61d5e7793
Binary files /dev/null and b/source/libs/index/src/.indexFilter.c.swo differ
diff --git a/source/libs/index/src/index.c b/source/libs/index/src/index.c
index 058f3c1915..a5b158c00c 100644
--- a/source/libs/index/src/index.c
+++ b/source/libs/index/src/index.c
@@ -289,7 +289,7 @@ SIndexTerm* indexTermCreate(int64_t suid, SIndexOperOnColumn oper, uint8_t colTy
   tm->nColName = nColName;
 
   char*   buf = NULL;
-  int32_t len = indexConvertDataToStr((void*)colVal, INDEX_TYPE_GET_TYPE(colType), (void**)&buf);
+  int32_t len = idxConvertDataToStr((void*)colVal, INDEX_TYPE_GET_TYPE(colType), (void**)&buf);
   assert(len != -1);
 
   tm->colVal = buf;
@@ -625,7 +625,7 @@ int32_t indexSerialCacheKey(ICacheKey* key, char* buf) {
 
   char* p = buf;
   char  tbuf[65] = {0};
-  indexInt2str((int64_t)key->suid, tbuf, 0);
+  idxInt2str((int64_t)key->suid, tbuf, 0);
 
   SERIALIZE_STR_VAR_TO_BUF(buf, tbuf, strlen(tbuf));
   SERIALIZE_VAR_TO_BUF(buf, '_', char);
diff --git a/source/libs/index/src/indexComm.c b/source/libs/index/src/indexComm.c
index d30147d70f..ca9d429e68 100644
--- a/source/libs/index/src/indexComm.c
+++ b/source/libs/index/src/indexComm.c
@@ -48,7 +48,7 @@
 char JSON_COLUMN[] = "JSON";
 char JSON_VALUE_DELIM = '&';
 
-char* indexInt2str(int64_t val, char* dst, int radix) {
+char* idxInt2str(int64_t val, char* dst, int radix) {
   char     buffer[65] = {0};
   char*    p;
   int64_t  new_val;
@@ -257,7 +257,12 @@ char* indexPackJsonDataPrefix(SIndexTerm* itm, int32_t* skip) {
   return buf;
 }
 
-int32_t indexConvertData(void* src, int8_t type, void** dst) {
+int idxUidCompare(const void* a, const void* b) {
+  uint64_t l = *(uint64_t*)a;
+  uint64_t r = *(uint64_t*)b;
+  return l - r;
+}
+int32_t idxConvertData(void* src, int8_t type, void** dst) {
   int tlen = -1;
   switch (type) {
     case TSDB_DATA_TYPE_TIMESTAMP:
@@ -342,44 +347,44 @@ int32_t indexConvertData(void* src, int8_t type, void** dst) {
   // indexMayFillNumbericData(*dst, tlen);
   return tlen;
 }
-int32_t indexConvertDataToStr(void* src, int8_t type, void** dst) {
+int32_t idxConvertDataToStr(void* src, int8_t type, void** dst) {
   int     tlen = tDataTypes[type].bytes;
   int32_t bufSize = 64;
   switch (type) {
     case TSDB_DATA_TYPE_TIMESTAMP:
       *dst = taosMemoryCalloc(1, bufSize + 1);
-      indexInt2str(*(int64_t*)src, *dst, -1);
+      idxInt2str(*(int64_t*)src, *dst, -1);
       tlen = strlen(*dst);
       break;
     case TSDB_DATA_TYPE_BOOL:
     case TSDB_DATA_TYPE_UTINYINT:
       *dst = taosMemoryCalloc(1, bufSize + 1);
-      indexInt2str(*(uint8_t*)src, *dst, 1);
+      idxInt2str(*(uint8_t*)src, *dst, 1);
       tlen = strlen(*dst);
       break;
     case TSDB_DATA_TYPE_TINYINT:
       *dst = taosMemoryCalloc(1, bufSize + 1);
-      indexInt2str(*(int8_t*)src, *dst, 1);
+      idxInt2str(*(int8_t*)src, *dst, 1);
       tlen = strlen(*dst);
       break;
     case TSDB_DATA_TYPE_SMALLINT:
       *dst = taosMemoryCalloc(1, bufSize + 1);
-      indexInt2str(*(int16_t*)src, *dst, -1);
+      idxInt2str(*(int16_t*)src, *dst, -1);
       tlen = strlen(*dst);
       break;
     case TSDB_DATA_TYPE_USMALLINT:
       *dst = taosMemoryCalloc(1, bufSize + 1);
-      indexInt2str(*(uint16_t*)src, *dst, -1);
+      idxInt2str(*(uint16_t*)src, *dst, -1);
       tlen = strlen(*dst);
       break;
     case TSDB_DATA_TYPE_INT:
       *dst = taosMemoryCalloc(1, bufSize + 1);
-      indexInt2str(*(int32_t*)src, *dst, -1);
+      idxInt2str(*(int32_t*)src, *dst, -1);
       tlen = strlen(*dst);
       break;
     case TSDB_DATA_TYPE_UINT:
       *dst = taosMemoryCalloc(1, bufSize + 1);
-      indexInt2str(*(uint32_t*)src, *dst, 1);
+      idxInt2str(*(uint32_t*)src, *dst, 1);
       tlen = strlen(*dst);
       break;
     case TSDB_DATA_TYPE_BIGINT:
@@ -389,7 +394,7 @@ int32_t indexConvertDataToStr(void* src, int8_t type, void** dst) {
       break;
     case TSDB_DATA_TYPE_UBIGINT:
       *dst = taosMemoryCalloc(1, bufSize + 1);
-      indexInt2str(*(uint64_t*)src, *dst, 1);
+      idxInt2str(*(uint64_t*)src, *dst, 1);
       tlen = strlen(*dst);
     case TSDB_DATA_TYPE_FLOAT:
       *dst = taosMemoryCalloc(1, bufSize + 1);
diff --git a/source/libs/index/src/indexFilter.c b/source/libs/index/src/indexFilter.c
index fd2d6a5c8b..2cf83b52e4 100644
--- a/source/libs/index/src/indexFilter.c
+++ b/source/libs/index/src/indexFilter.c
@@ -547,6 +547,8 @@ static int32_t sifExecLogic(SLogicConditionNode *node, SIFCtx *ctx, SIFParam *ou
       } else if (node->condType == LOGIC_COND_TYPE_NOT) {
         // taosArrayAddAll(output->result, params[m].result);
       }
+      taosArraySort(output->result, idxUidCompare);
+      taosArrayRemoveDuplicate(output->result, idxUidCompare, NULL);
     }
   } else {
     for (int32_t m = 0; m < node->pParameterList->length; m++) {
diff --git a/source/libs/index/src/indexTfile.c b/source/libs/index/src/indexTfile.c
index 0145df4676..9600b1172e 100644
--- a/source/libs/index/src/indexTfile.c
+++ b/source/libs/index/src/indexTfile.c
@@ -578,8 +578,8 @@ int tfileWriterPut(TFileWriter* tw, void* data, bool order) {
   // ugly code, refactor later
   for (size_t i = 0; i < sz; i++) {
     TFileValue* v = taosArrayGetP((SArray*)data, i);
-    taosArraySort(v->tableId, tfileUidCompare);
-    taosArrayRemoveDuplicate(v->tableId, tfileUidCompare, NULL);
+    taosArraySort(v->tableId, idxUidCompare);
+    taosArrayRemoveDuplicate(v->tableId, idxUidCompare, NULL);
     int32_t tbsz = taosArrayGetSize(v->tableId);
     fstOffset += TF_TABLE_TATOAL_SIZE(tbsz);
   }
@@ -791,11 +791,6 @@ TFileReader* tfileGetReaderByCol(IndexTFile* tf, uint64_t suid, char* colName) {
   return rd;
 }
 
-static int tfileUidCompare(const void* a, const void* b) {
-  uint64_t l = *(uint64_t*)a;
-  uint64_t r = *(uint64_t*)b;
-  return l - r;
-}
 static int tfileStrCompare(const void* a, const void* b) {
   int ret = strcmp((char*)a, (char*)b);
   if (ret == 0) {
diff --git a/source/libs/index/test/utilUT.cc b/source/libs/index/test/utilUT.cc
index 4a30160244..6858d31325 100644
--- a/source/libs/index/test/utilUT.cc
+++ b/source/libs/index/test/utilUT.cc
@@ -327,13 +327,13 @@ TEST_F(UtilEnv, testFill) {
   for (int i = 0; i < 1000000; i++) {
     int64_t val = i;
     char    buf[65] = {0};
-    indexInt2str(val, buf, 1);
+    idxInt2str(val, buf, 1);
     EXPECT_EQ(val, taosStr2int64(buf));
   }
   for (int i = 0; i < 1000000; i++) {
     int64_t val = 0 - i;
     char    buf[65] = {0};
-    indexInt2str(val, buf, -1);
+    idxInt2str(val, buf, -1);
     EXPECT_EQ(val, taosStr2int64(buf));
   }
 }
diff --git a/tests/script/tsim/stable/tag_filter.sim b/tests/script/tsim/stable/tag_filter.sim
index c8edfb1ee3..9a2c8abc57 100644
--- a/tests/script/tsim/stable/tag_filter.sim
+++ b/tests/script/tsim/stable/tag_filter.sim
@@ -25,7 +25,7 @@ sql insert into db.ctb5 values(now, 5, "2")
 
 sql create table db.ctb6 using db.stb tags(6, "102")
 sql insert into db.ctb6 values(now, 6, "2")
-
+// int
 sql select * from db.stb where t1 = 1
 if $rows != 1 then 
   return -1