diff --git a/source/libs/index/inc/indexInt.h b/source/libs/index/inc/indexInt.h
index f6ff9bc1392aa4ad2d065c00c3b1942da90d1486..cc740826e9add90f9ac9d5cf28cf6bb0989e2d49 100644
--- a/source/libs/index/inc/indexInt.h
+++ b/source/libs/index/inc/indexInt.h
@@ -37,9 +37,11 @@ struct SIndex {
 #endif  
  void     *cache;
  void     *tindex; 
- SHashObj *fieldObj;  // <field name, field id> 
- uint64_t suid; 
- int      fieldId; 
+ SHashObj *fieldObj;// < field name, field id> 
+ 
+ int64_t  suid;      // current super table id, -1 is normal table    
+ int      fieldId;  // field id allocated to cache
+ int32_t  cVersion; // current version allocated to cache 
  pthread_mutex_t mtx;
 };   
 
@@ -58,6 +60,7 @@ struct SIndexMultiTermQuery {
 
 // field and key;
 typedef struct SIndexTerm {
+  uint8_t type;  // term data type, str/interger/json
   char    *key;
   int32_t nKey;
   char    *val;
diff --git a/source/libs/index/inc/index_cache.h b/source/libs/index/inc/index_cache.h
index 27e095ff31676df7a5623b6468e56fa03f179007..ff915a39308f376c342d45b04018542c2f5bf198 100644
--- a/source/libs/index/inc/index_cache.h
+++ b/source/libs/index/inc/index_cache.h
@@ -20,8 +20,8 @@
 // ----------------- row structure in skiplist ---------------------
 
 /* A data row, the format is like below:
- * |<--totalLen-->|<-- fieldId-->|<-- value len--->|<-- value-->|<--version--->|<-- itermType -->|
- *
+ * content: |<--totalLen-->|<-- fieldid-->|<--field type -->|<-- value len--->|<-- value -->|<--  uid  -->|<--version--->|<-- itermType -->|
+ * len    : |<--int32_t -->|<-- int16_t-->|<--  int16_t --->|<--- int32_t --->|<--valuelen->|<--uint64_t->|<-- int32_t-->|<--  int8_t  --->| 
  */
 
 #ifdef __cplusplus
@@ -30,7 +30,6 @@ extern "C" {
 
 typedef struct IndexCache {
   T_REF_DECLARE() 
-  int cVersion; // 
 } IndexCache;
 
 
@@ -39,7 +38,8 @@ IndexCache *indexCacheCreate();
 
 void indexCacheDestroy(IndexCache *cache);
 
-int indexCachePut(IndexCache *cache, int32_t fieldId,  const char *fieldVale,  int32_t fvlen, uint64_t uid, int8_t operaType); 
+int indexCachePut(IndexCache *cache, int16_t fieldId, int16_t fieldType, const char *fieldValue,  int32_t fvLen, 
+              uint32_t version, uint64_t uid, int8_t operType);
 
 int indexCacheGet(IndexCache *cache, uint64_t *rst);
 int indexCacheSearch(IndexCache *cache, SIndexMultiTermQuery *query, SArray *result);
diff --git a/source/libs/index/src/index.c b/source/libs/index/src/index.c
index c01141118988d2b729e902334f2f1ba587de8961..6a2697491d4b570d80842e2ee2e4394193663b23 100644
--- a/source/libs/index/src/index.c
+++ b/source/libs/index/src/index.c
@@ -23,7 +23,8 @@
 
 
 typedef struct SIdxFieldInfo {
-  int id;   // generated by index internal  
+  int fieldId;     // generated by index internal  
+  int cVersion;
   int type; // field type 
 } SIdxFieldInfo; 
 
@@ -39,7 +40,7 @@ static int indexMergeCacheIntoTindex(struct SIndex *sIdx) {
 }
 SIndex *indexOpen(SIndexOpts *opts, const char *path) {
   pthread_once(&isInit, indexInit);
-  SIndex *sIdx = malloc(sizeof(SIndex));
+  SIndex *sIdx = calloc(1, sizeof(SIndex));
 
 #ifdef USE_LUCENE  
   index_t *index = index_open(path);      
@@ -49,6 +50,8 @@ SIndex *indexOpen(SIndexOpts *opts, const char *path) {
   sIdx->cache    = (void*)indexCacheCreate();     
   sIdx->tindex   = NULL;
   sIdx->fieldObj = taosHashInit(8, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_ENTRY_LOCK);
+  sIdx->fieldId  = 1; 
+  sIdx->cVersion = 1; 
   pthread_mutex_init(&sIdx->mtx, NULL);
   return sIdx;  
 }
@@ -65,7 +68,7 @@ void indexClose(SIndex *sIdx) {
   return;
 }
 
-int indexPut(SIndex *index, SArray* field_vals, int uid) {
+int indexPut(SIndex *index, SArray* fVals, int uid) {
   
 #ifdef USE_LUCENE 
     index_document_t *doc = index_document_create(); 
@@ -73,8 +76,8 @@ int indexPut(SIndex *index, SArray* field_vals, int uid) {
     char buf[16] = {0};
     sprintf(buf, "%d", uid);
     
-    for (int i = 0; i < taosArrayGetSize(field_vals); i++) {
-      SIndexTerm *p = taosArrayGetP(field_vals, i); 
+    for (int i = 0; i < taosArrayGetSize(fVals); i++) {
+      SIndexTerm *p = taosArrayGetP(fVals, i); 
       index_document_add(doc, (const char *)(p->key), p->nKey, (const char *)(p->val), p->nVal, 1); 
     }
     index_document_add(doc, NULL, 0, buf, strlen(buf), 0);
@@ -82,10 +85,33 @@ int indexPut(SIndex *index, SArray* field_vals, int uid) {
     index_put(index->index, doc);
     index_document_destroy(doc);
 #endif
+
+   //TODO(yihao): reduce the lock range 
   pthread_mutex_lock(&index->mtx);   
+  for (int i = 0; i < taosArrayGetSize(fVals); i++) {
+    SIndexTerm     *p = taosArrayGetP(fVals, i);
+    SIdxFieldInfo *fi = taosHashGet(index->fieldObj, p->key, p->nKey);
+    if (fi == NULL) {
+      SIdxFieldInfo tfi = {.fieldId = index->fieldId, .type = p->type};
+      index->cVersion++; 
+      index->fieldId++;
+      taosHashPut(index->fieldObj, p->key, p->nKey, &tfi, sizeof(tfi)); 
+    } else {
+      //TODO, del  
+    }
+  }   
+
+  for (int i = 0; i < taosArrayGetSize(fVals); i++) {
+    SIndexTerm     *p = taosArrayGetP(fVals, i);
+    SIdxFieldInfo *fi = taosHashGet(index->fieldObj, p->key, p->nKey);
+    assert(fi !=  NULL); 
+    int32_t fieldId = fi->fieldId; 
+    int32_t colType = fi->type;  
+    int32_t version = index->cVersion;
+     
+  }
   pthread_mutex_unlock(&index->mtx);
   return 1;
-
 }
 int indexSearch(SIndex *index, SIndexMultiTermQuery *multiQuerys, SArray *result) {
 #ifdef USE_LUCENE 
@@ -152,7 +178,7 @@ SIndexMultiTermQuery *indexMultiTermQueryCreate(EIndexOperatorType opera) {
   SIndexMultiTermQuery *p = (SIndexMultiTermQuery *)malloc(sizeof(SIndexMultiTermQuery));
   if (p == NULL) { return NULL; }
   p->opera  = opera; 
-  p->query = taosArrayInit(1, sizeof(SIndexTermQuery)); 
+  p->query = taosArrayInit(4, sizeof(SIndexTermQuery)); 
   return p;
 }
 void indexMultiTermQueryDestroy(SIndexMultiTermQuery *pQuery) {
diff --git a/source/libs/index/src/index_cache.c b/source/libs/index/src/index_cache.c
index 7c355b0f0a5e712a8ce0143256a9cd76a2fd6632..2ecc823ef9e73b40e8497a0ce2468d2ada67fb01 100644
--- a/source/libs/index/src/index_cache.c
+++ b/source/libs/index/src/index_cache.c
@@ -19,7 +19,7 @@ static int32_t compareKey(const void *l, const void *r) {
   char *lp = (char *)l;
   char *rp = (char *)r;
 
-  // skip total len
+  // skip total len, not compare
   int32_t ll, rl;  // len    
   memcpy(&ll, lp, sizeof(int32_t));
   memcpy(&rl, rp, sizeof(int32_t));
@@ -27,7 +27,7 @@ static int32_t compareKey(const void *l, const void *r) {
   rp += sizeof(int32_t);
   
   // compare field id
-  int32_t lf, rf; // field id
+  int16_t lf, rf; // field id
   memcpy(&lf, lp, sizeof(lf));
   memcpy(&rf, rp, sizeof(rf));
   if (lf != rf) {
@@ -36,14 +36,22 @@ static int32_t compareKey(const void *l, const void *r) {
   lp += sizeof(lf);
   rp += sizeof(rf);
 
-  // compare field value 
+  // compare field type
+  int16_t lft, rft; 
+  memcpy(&lft, lp, sizeof(lft));
+  memcpy(&rft, rp, sizeof(rft));
+  lp += sizeof(lft);
+  rp += sizeof(rft);
+  assert(rft == rft);
+  
+  // skip value len  
   int32_t lfl, rfl;
   memcpy(&lfl, lp, sizeof(lfl)); 
   memcpy(&rfl, rp, sizeof(rfl)); 
   lp += sizeof(lfl);
   rp += sizeof(rfl);
   
-  //refator later
+  // compare value 
   int32_t i, j;
   for (i = 0, j = 0; i < lfl && j < rfl; i++, j++) {
     if (lp[i] == rp[j]) { continue; }
@@ -54,17 +62,24 @@ static int32_t compareKey(const void *l, const void *r) {
   lp += lfl;
   rp += rfl; 
 
-  // compare version
+  // skip uid 
+  uint64_t lu, ru;
+  memcpy(&lu, lp, sizeof(lu)); 
+  memcpy(&ru, rp, sizeof(ru));
+  lp += sizeof(lu);
+  rp += sizeof(ru);
+  
+  // compare version, desc order
   int32_t lv, rv;
   memcpy(&lv, lp, sizeof(lv));
   memcpy(&rv, rp, sizeof(rv));
   if (lv != rv) {
     return lv > rv ? -1 : 1; 
-  }  
+  }   
   lp += sizeof(lv);
   rp += sizeof(rv);
+  // not care item type
 
-  
   return 0;  
   
 } 
@@ -77,35 +92,40 @@ void indexCacheDestroy(IndexCache *cache) {
   free(cache);
 }
 
-int indexCachePut(IndexCache *cache, int32_t fieldId, const char *fieldValue,  int32_t fvlen, uint64_t uid, int8_t operType) {
+int indexCachePut(IndexCache *cache, int16_t fieldId, int16_t fieldType, const char *fieldValue,  int32_t fvLen, 
+              uint32_t version, uint64_t uid, int8_t operType) {
   if (cache == NULL) { return -1;} 
-  int32_t version = T_REF_INC(cache);     
 
-  int32_t total = sizeof(int32_t) + sizeof(fieldId) + 4 + fvlen  + sizeof(version) + sizeof(uid) + sizeof(operType); 
+  int32_t total = sizeof(int32_t) + sizeof(fieldId) + sizeof(fieldType) + sizeof(fvLen) + fvLen  + sizeof(version) + sizeof(uid) + sizeof(operType); 
 
   char *buf = calloc(1, total); 
   char *p   = buf;
 
-  memcpy(buf, &total, sizeof(total)); 
-  total += total;
+  memcpy(p, &total, sizeof(total)); 
+  p += sizeof(total);
 
-  memcpy(buf, &fieldId, sizeof(fieldId));   
-  buf += sizeof(fieldId);
+  memcpy(p, &fieldId, sizeof(fieldId));   
+  p += sizeof(fieldId);
 
-  memcpy(buf, &fvlen, sizeof(fvlen));
-  buf += sizeof(fvlen);
-  memcpy(buf, fieldValue, fvlen); 
-  buf += fvlen;
+  memcpy(p, &fieldType, sizeof(fieldType));
+  p += sizeof(fieldType);
+  
+  memcpy(p, &fvLen, sizeof(fvLen));
+  p += sizeof(fvLen);
+  memcpy(p, fieldValue, fvLen); 
+  p += fvLen;
 
-  memcpy(buf, &version, sizeof(version));
-  buf += sizeof(version);
+  memcpy(p, &version, sizeof(version));
+  p += sizeof(version);
 
-  memcpy(buf, &uid, sizeof(uid));  
-  buf += sizeof(uid);
+  memcpy(p, &uid, sizeof(uid));  
+  p += sizeof(uid);
 
-  memcpy(buf, &operType, sizeof(operType));
-  buf += sizeof(operType); 
- 
+  memcpy(p, &operType, sizeof(operType));
+  p += sizeof(operType); 
+    
+}
+int indexCacheDel(IndexCache *cache, int32_t fieldId, const char *fieldValue, int32_t fvlen, uint64_t uid, int8_t operType) {
 
 }
 int indexCacheSearch(IndexCache *cache, SIndexMultiTermQuery *query, SArray *result) {