diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 15a76daab78701e80f532001bddc4d984cdecc01..e7a821ddf4643e78ae521eaf534ee8881a8974c4 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -63,6 +63,9 @@ static SExprInfo* doAddProjectCol(SQueryInfo* pQueryInfo, int32_t colIndex, int3
 static int32_t setShowInfo(SSqlObj* pSql, SSqlInfo* pInfo);
 static char*   getAccountId(SSqlObj* pSql);
 
+static bool serializeExprListToVariant(SArray* pList, tVariant **dest, int16_t colType);
+static int32_t validateParamOfRelationIn(tVariant *pVar, int32_t colType);
+
 static bool has(SArray* pFieldList, int32_t startIdx, const char* name);
 static char* cloneCurrentDBName(SSqlObj* pSql);
 static int32_t getDelimiterIndex(SStrToken* pTableName);
@@ -134,14 +137,97 @@ static bool    validateDebugFlag(int32_t v);
 static int32_t checkQueryRangeForFill(SSqlCmd* pCmd, SQueryInfo* pQueryInfo);
 static int32_t loadAllTableMeta(SSqlObj* pSql, struct SSqlInfo* pInfo);
 
-static bool    isTimeWindowQuery(SQueryInfo* pQueryInfo) {
+static bool isTimeWindowQuery(SQueryInfo* pQueryInfo) {
   return pQueryInfo->interval.interval > 0 || pQueryInfo->sessionWindow.gap > 0;
 }
 
+
 int16_t getNewResColId(SSqlCmd* pCmd) {
   return pCmd->resColumnId--;
 }
 
+// serialize expr in exprlist to binary 
+// formate  "type | size | value"
+bool serializeExprListToVariant(SArray* pList, tVariant **dst, int16_t colType) {
+  bool ret = false;
+  if (!pList || pList->size <= 0) {
+    return ret;
+  }  
+  if (colType == TSDB_DATA_TYPE_DOUBLE || colType == TSDB_DATA_TYPE_FLOAT) {
+    return ret;
+  }
+  
+  tSqlExprItem* item = (tSqlExprItem *)taosArrayGet(pList, 0); 
+  int32_t firstTokenType = item->pNode->token.type; 
+  int32_t type  = firstTokenType;
+
+  //nchar to binary and  
+  toTSDBType(type);  
+  if (type != colType && (type != TSDB_DATA_TYPE_BINARY || colType != TSDB_DATA_TYPE_NCHAR)) {
+    return false;  
+  }    
+  type = colType; 
+ 
+  SBufferWriter bw = tbufInitWriter( NULL, false );
+  tbufEnsureCapacity(&bw, 512);
+
+  int32_t size = (int32_t)(pList->size);
+  tbufWriteUint32(&bw, type);  
+  tbufWriteInt32(&bw,  size);
+   
+  for (int32_t i = 0; i < size; i++) {
+    tSqlExpr* pSub = ((tSqlExprItem*)(taosArrayGet(pList, i)))->pNode;
+
+    // check all the token type in expr list same or not
+    if (firstTokenType != pSub->token.type) {
+      break;
+    }  
+
+    toTSDBType(pSub->token.type);  
+
+    tVariant var;  
+    tVariantCreate(&var, &pSub->token); 
+    if (type == TSDB_DATA_TYPE_BOOL || type == TSDB_DATA_TYPE_TINYINT || type == TSDB_DATA_TYPE_SMALLINT 
+         || type == TSDB_DATA_TYPE_BIGINT || type == TSDB_DATA_TYPE_INT) {
+      tbufWriteInt64(&bw, var.i64);        
+    } else if (type == TSDB_DATA_TYPE_DOUBLE || type == TSDB_DATA_TYPE_FLOAT) {
+      tbufWriteDouble(&bw, var.dKey);
+    } else if (type == TSDB_DATA_TYPE_BINARY){
+      tbufWriteBinary(&bw, var.pz, var.nLen);
+    } else if (type == TSDB_DATA_TYPE_NCHAR) {
+      char   *buf = (char *)calloc(1, (var.nLen + 1)*TSDB_NCHAR_SIZE);       
+      if (tVariantDump(&var, buf, type, false) != TSDB_CODE_SUCCESS) {
+        free(buf);
+        tVariantDestroy(&var);
+        break;  
+      }
+      tbufWriteBinary(&bw, buf, twcslen((wchar_t *)buf) * TSDB_NCHAR_SIZE);
+      free(buf);
+    }
+    tVariantDestroy(&var);
+
+    if (i == size - 1) { ret = true;}
+  }
+
+  if (ret == true) {
+    if ((*dst = calloc(1, sizeof(tVariant))) != NULL) {
+      tVariantCreateFromBinary(*dst, tbufGetData(&bw, false), tbufTell(&bw), TSDB_DATA_TYPE_BINARY);    
+    } else {
+      ret = false;
+    }
+  }
+  tbufCloseWriter(&bw); 
+  return ret;
+}
+
+static int32_t validateParamOfRelationIn(tVariant *pVar, int32_t colType) {
+  if (pVar->nType != TSDB_DATA_TYPE_BINARY) {
+    return -1; 
+  }
+  SBufferReader br = tbufInitReader(pVar->pz, pVar->nLen, false); 
+  return colType == TSDB_DATA_TYPE_NCHAR ?  0 : (tbufReadUint32(&br) == colType ? 0: -1);     
+}
+
 static uint8_t convertOptr(SStrToken *pToken) {
   switch (pToken->type) {
     case TK_LT:
@@ -162,6 +248,7 @@ static uint8_t convertOptr(SStrToken *pToken) {
       return TSDB_RELATION_EQUAL;
     case TK_PLUS:
       return TSDB_BINARY_OP_ADD;
+
     case TK_MINUS:
       return TSDB_BINARY_OP_SUBTRACT;
     case TK_STAR:
@@ -177,6 +264,8 @@ static uint8_t convertOptr(SStrToken *pToken) {
       return TSDB_RELATION_ISNULL;
     case TK_NOTNULL:
       return TSDB_RELATION_NOTNULL;
+    case TK_IN:
+      return TSDB_RELATION_IN;
     default: { return 0; }
   }
 }
@@ -3229,6 +3318,25 @@ static int32_t doExtractColumnFilterInfo(SSqlCmd* pCmd, SQueryInfo* pQueryInfo,
     retVal = tVariantDump(&pRight->value, (char*)&pColumnFilter->upperBndd, colType, false);
 
   // TK_GT,TK_GE,TK_EQ,TK_NE are based on the pColumn->lowerBndd
+  } else if (pExpr->tokenId == TK_IN) {
+    tVariant *pVal; 
+    if (pRight->tokenId != TK_SET || !serializeExprListToVariant(pRight->pParam, &pVal, colType) || colType == TSDB_DATA_TYPE_TIMESTAMP) {
+      return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg);
+    }         
+    if (validateParamOfRelationIn(pVal, colType) != TSDB_CODE_SUCCESS) {
+      tVariantDestroy(pVal); 
+      free(pVal);
+      return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg);
+    }
+    pColumnFilter->pz  = (int64_t)calloc(1, pVal->nLen + 1);
+    pColumnFilter->len = pVal->nLen;
+    pColumnFilter->filterstr = 1;
+    memcpy((char *)(pColumnFilter->pz), (char *)(pVal->pz), pVal->nLen);  
+    //retVal = tVariantDump(pVal, (char *)(pColumnFilter->pz), TSDB_DATA_TYPE_BINARY, false);
+
+    tVariantDestroy(pVal); 
+    free(pVal);
+     
   } else if (colType == TSDB_DATA_TYPE_BINARY) {
     pColumnFilter->pz = (int64_t)calloc(1, bufLen * TSDB_NCHAR_SIZE);
     pColumnFilter->len = pRight->value.nLen;
@@ -3277,6 +3385,9 @@ static int32_t doExtractColumnFilterInfo(SSqlCmd* pCmd, SQueryInfo* pQueryInfo,
     case TK_NOTNULL:
       pColumnFilter->lowerRelOptr = TSDB_RELATION_NOTNULL;
       break;
+    case TK_IN:
+      pColumnFilter->lowerRelOptr = TSDB_RELATION_IN;
+      break;
     default:
       return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg);
   }
@@ -3392,7 +3503,7 @@ static int32_t extractColumnFilterInfo(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SC
       && pExpr->tokenId != TK_ISNULL
       && pExpr->tokenId != TK_NOTNULL
       && pExpr->tokenId != TK_LIKE
-      ) {
+      && pExpr->tokenId != TK_IN) {
       return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg2);
     }
   } else {
@@ -3402,7 +3513,7 @@ static int32_t extractColumnFilterInfo(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SC
     
     if (pSchema->type == TSDB_DATA_TYPE_BOOL) {
       int32_t t = pExpr->tokenId;
-      if (t != TK_EQ && t != TK_NE && t != TK_NOTNULL && t != TK_ISNULL) {
+      if (t != TK_EQ && t != TK_NE && t != TK_NOTNULL && t != TK_ISNULL && t != TK_IN) {
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg3);
       }
     }
@@ -4444,7 +4555,11 @@ static int32_t validateTagCondExpr(SSqlCmd* pCmd, tExprNode *p) {
       free(tmp);
     } else {
       double tmp;
-      retVal = tVariantDump(vVariant, (char*)&tmp, schemaType, false);
+      if (p->_node.optr == TSDB_RELATION_IN) {
+        retVal = validateParamOfRelationIn(vVariant, schemaType);
+      } else {
+        retVal = tVariantDump(vVariant, (char*)&tmp, schemaType, false);
+      }
     }
     
     if (retVal != TSDB_CODE_SUCCESS) {
@@ -7953,6 +8068,24 @@ int32_t exprTreeFromSqlExpr(SSqlCmd* pCmd, tExprNode **pExpr, const tSqlExpr* pS
       }
       
       return TSDB_CODE_SUCCESS;
+    } else if (pSqlExpr->tokenId == TK_SET) {
+      int32_t type = -1;
+      STableMeta* pTableMeta = tscGetMetaInfo(pQueryInfo, 0)->pTableMeta;
+      if (pCols != NULL) {
+        SColIndex* idx = taosArrayGet(pCols, 0);
+        SSchema* pSchema = tscGetTableColumnSchema(pTableMeta, idx->colIndex);
+        if (pSchema != NULL) {
+          type = pSchema->type; 
+        }
+      }
+
+      tVariant *pVal;
+      if (serializeExprListToVariant(pSqlExpr->pParam, &pVal, type) == false) {
+        return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), "not support filter expression");
+      }
+      *pExpr = calloc(1, sizeof(tExprNode));
+      (*pExpr)->nodeType = TSQL_NODE_VALUE;
+      (*pExpr)->pVal = pVal;
     } else {
       return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), "not support filter expression");
     }
diff --git a/src/common/inc/texpr.h b/src/common/inc/texpr.h
index 275dd12fd7ca9f9771592039d846593fa958f240..2e49a69366c2277c98ec32a1d8419c141ddecc0f 100644
--- a/src/common/inc/texpr.h
+++ b/src/common/inc/texpr.h
@@ -94,6 +94,8 @@ bool exprTreeApplyFilter(tExprNode *pExpr, const void *pItem, SExprTraverseSupp
 void arithmeticTreeTraverse(tExprNode *pExprs, int32_t numOfRows, char *pOutput, void *param, int32_t order,
                             char *(*cb)(void *, const char*, int32_t));
 
+void buildFilterSetFromBinary(void **q, const char *buf, int32_t len);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/common/src/texpr.c b/src/common/src/texpr.c
index f2dd3890a163ec1e1e25d2ac8b55f23aa9d5a79d..6fa4d68734df6fde94725026bd65b219cc6564ab 100644
--- a/src/common/src/texpr.c
+++ b/src/common/src/texpr.c
@@ -466,6 +466,32 @@ tExprNode* exprTreeFromTableName(const char* tbnameCond) {
   return expr;
 }
 
+void buildFilterSetFromBinary(void **q, const char *buf, int32_t len) {
+  SBufferReader br = tbufInitReader(buf, len, false); 
+  uint32_t type  = tbufReadUint32(&br);     
+  SHashObj *pObj = taosHashInit(256, taosGetDefaultHashFunction(type), true, false);
+  int dummy = -1;
+  int32_t sz = tbufReadInt32(&br);
+  for (int32_t i = 0; i < sz; i++) {
+    if (type == TSDB_DATA_TYPE_BOOL || type == TSDB_DATA_TYPE_TINYINT || type == TSDB_DATA_TYPE_SMALLINT || type == TSDB_DATA_TYPE_BIGINT || type == TSDB_DATA_TYPE_INT) {
+      int64_t val = tbufReadInt64(&br); 
+      taosHashPut(pObj, (char *)&val, sizeof(val),  &dummy, sizeof(dummy));
+    } else if (type == TSDB_DATA_TYPE_DOUBLE || type == TSDB_DATA_TYPE_FLOAT) {
+      double  val = tbufReadDouble(&br);
+      taosHashPut(pObj, (char *)&val, sizeof(val), &dummy, sizeof(dummy));
+    } else if (type == TSDB_DATA_TYPE_BINARY) {
+      size_t  t = 0;
+      const char *val = tbufReadBinary(&br, &t);
+      taosHashPut(pObj, (char *)val, t, &dummy, sizeof(dummy));
+    } else if (type == TSDB_DATA_TYPE_NCHAR) {
+      size_t  t = 0;
+      const char *val = tbufReadBinary(&br, &t);      
+      taosHashPut(pObj, (char *)val, t, &dummy, sizeof(dummy));
+    }
+  } 
+  *q = (void *)pObj;
+}
+
 tExprNode* exprdup(tExprNode* pNode) {
   if (pNode == NULL) {
     return NULL;
diff --git a/src/query/inc/qExecutor.h b/src/query/inc/qExecutor.h
index 7e76bd762202a80ff7c3a4ef612599746fc5ee25..24547c1e0bdbfd86b9eb9a4ab45001733fea868e 100644
--- a/src/query/inc/qExecutor.h
+++ b/src/query/inc/qExecutor.h
@@ -113,6 +113,7 @@ typedef struct SColumnFilterElem {
   int16_t           bytes;  // column length
   __filter_func_t   fp;
   SColumnFilterInfo filterInfo;
+  void              *q;
 } SColumnFilterElem;
 
 typedef struct SSingleColumnFilterInfo {
diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 7da209aef99c128ba919390a2ca89df9e8f17cbb..3c999fca0b35fafb0a34d298f8479e42060758ba 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -6942,6 +6942,10 @@ int32_t doCreateFilterInfo(SColumnInfo* pCols, int32_t numOfCols, int32_t numOfF
         }
 
         pSingleColFilter->bytes = pCols[i].bytes;
+
+        if (lower == TSDB_RELATION_IN) {
+          buildFilterSetFromBinary(&pSingleColFilter->q, (char *)(pSingleColFilter->filterInfo.pz), (int32_t)(pSingleColFilter->filterInfo.len));
+        }
       }
 
       j++;
@@ -6954,6 +6958,9 @@ int32_t doCreateFilterInfo(SColumnInfo* pCols, int32_t numOfCols, int32_t numOfF
 void* doDestroyFilterInfo(SSingleColumnFilterInfo* pFilterInfo, int32_t numOfFilterCols) {
   for (int32_t i = 0; i < numOfFilterCols; ++i) {
     if (pFilterInfo[i].numOfFilters > 0) {
+      if (pFilterInfo[i].pFilters->filterInfo.lowerRelOptr == TSDB_RELATION_IN) {
+        taosHashCleanup((SHashObj *)(pFilterInfo[i].pFilters->q));
+      }
       tfree(pFilterInfo[i].pFilters);
     }
   }
diff --git a/src/query/src/qFilterfunc.c b/src/query/src/qFilterfunc.c
index dabce88423f762029a4b27dc3fb4731fd28e6406..663f8814a0d57eb8cecad7f2d62944425510f029 100644
--- a/src/query/src/qFilterfunc.c
+++ b/src/query/src/qFilterfunc.c
@@ -253,6 +253,27 @@ bool isNullOperator(SColumnFilterElem *pFilter, const char* minval, const char*
 bool notNullOperator(SColumnFilterElem *pFilter, const char* minval, const char* maxval, int16_t type) {
   return true;
 }
+bool inOperator(SColumnFilterElem *pFilter, const char* minval, const char* maxval, int16_t type) {
+  if (type == TSDB_DATA_TYPE_BOOL || type == TSDB_DATA_TYPE_TINYINT || type == TSDB_DATA_TYPE_SMALLINT || type == TSDB_DATA_TYPE_BIGINT || type == TSDB_DATA_TYPE_INT) {
+    int64_t minv = -1, maxv = -1;
+    GET_TYPED_DATA(minv, int64_t, type, minval);
+    GET_TYPED_DATA(maxv, int64_t, type, maxval);
+    if (minv == maxv) {
+      return NULL != taosHashGet((SHashObj *)pFilter->q, (char *)&minv, sizeof(minv));     
+    }
+    return true; 
+  } else if (type == TSDB_DATA_TYPE_DOUBLE || type == TSDB_DATA_TYPE_DOUBLE) {
+    double v;
+    GET_TYPED_DATA(v, double, type, minval);
+    return NULL != taosHashGet((SHashObj *)pFilter->q, (char *)&v, sizeof(v));     
+  } else if (type == TSDB_DATA_TYPE_BINARY) {
+     return NULL != taosHashGet((SHashObj *)pFilter->q, varDataVal(minval), varDataLen(minval));        
+  } else if (type == TSDB_DATA_TYPE_NCHAR){
+     return NULL != taosHashGet((SHashObj *)pFilter->q, varDataVal(minval), varDataLen(minval));        
+  }     
+   
+  return false;
+} 
 
 ///////////////////////////////////////////////////////////////////////////////
 bool rangeFilter_ii(SColumnFilterElem *pFilter, const char *minval, const char *maxval, int16_t type) {
@@ -389,6 +410,7 @@ bool (*filterOperators[])(SColumnFilterElem *pFilter, const char* minval, const
     likeOperator,
     isNullOperator,
     notNullOperator,
+    inOperator,
 };
 
 bool (*rangeFilterOperators[])(SColumnFilterElem *pFilter, const char* minval, const char* maxval, int16_t type) = {
@@ -397,6 +419,7 @@ bool (*rangeFilterOperators[])(SColumnFilterElem *pFilter, const char* minval, c
     rangeFilter_ie,
     rangeFilter_ei,
     rangeFilter_ii,
+
 };
 
 __filter_func_t getFilterOperator(int32_t lowerOptr, int32_t upperOptr) {
diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index c333294179f215890f06ae8d30bf6316f379f875..6c7c14c13c3e9c6de89f712601a60502dac62d2b 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -2397,6 +2397,8 @@ static void destroyHelper(void* param) {
   tQueryInfo* pInfo = (tQueryInfo*)param;
   if (pInfo->optr != TSDB_RELATION_IN) {
     tfree(pInfo->q);
+  } else {
+    taosHashCleanup((SHashObj *)(pInfo->q));
   }
 
   free(param);
@@ -3155,11 +3157,23 @@ void filterPrepare(void* expr, void* param) {
 
   pInfo->sch      = *pSchema;
   pInfo->optr     = pExpr->_node.optr;
-  pInfo->compare  = getComparFunc(pSchema->type, pInfo->optr);
+  pInfo->compare  = getComparFunc(pInfo->sch.type, pInfo->optr);
   pInfo->indexed  = pTSSchema->columns->colId == pInfo->sch.colId;
 
   if (pInfo->optr == TSDB_RELATION_IN) {
-    pInfo->q = (char*) pCond->arr;
+     int dummy = -1;
+     SHashObj *pObj = NULL; 
+     if (pInfo->sch.colId == TSDB_TBNAME_COLUMN_INDEX) {
+        pObj = taosHashInit(256, taosGetDefaultHashFunction(pInfo->sch.type), true, false);
+        SArray *arr = (SArray *)(pCond->arr);
+        for (size_t i = 0; i < taosArrayGetSize(arr); i++) {
+          char* p = taosArrayGetP(arr, i);
+          taosHashPut(pObj, varDataVal(p),varDataLen(p), &dummy, sizeof(dummy));
+        }
+     } else {
+       buildFilterSetFromBinary((void **)&pObj, pCond->pz, pCond->nLen);
+     }
+     pInfo->q = (char *)pObj;  
   } else if (pCond != NULL) {
     uint32_t size = pCond->nLen * TSDB_NCHAR_SIZE;
     if (size < (uint32_t)pSchema->bytes) {
@@ -3330,6 +3344,20 @@ static bool tableFilterFp(const void* pNode, void* param) {
     } else if (pInfo->optr == TSDB_RELATION_NOTNULL) {
       return (val != NULL) && (!isNull(val, pInfo->sch.type));
     }
+  } else if (pInfo->optr == TSDB_RELATION_IN) {
+     int type = pInfo->sch.type;
+     if (type == TSDB_DATA_TYPE_BOOL || type == TSDB_DATA_TYPE_TINYINT || type == TSDB_DATA_TYPE_SMALLINT || type == TSDB_DATA_TYPE_BIGINT || type == TSDB_DATA_TYPE_INT) {
+       int64_t v;
+       GET_TYPED_DATA(v, int64_t, pInfo->sch.type, val);
+       return NULL != taosHashGet((SHashObj *)pInfo->q, (char *)&v, sizeof(v));     
+     } else if (type == TSDB_DATA_TYPE_DOUBLE || type == TSDB_DATA_TYPE_DOUBLE) {
+       double v;
+       GET_TYPED_DATA(v, double, pInfo->sch.type, val);
+       return NULL != taosHashGet((SHashObj *)pInfo->q, (char *)&v, sizeof(v));     
+     } else if (type == TSDB_DATA_TYPE_BINARY || type == TSDB_DATA_TYPE_NCHAR){
+       return NULL != taosHashGet((SHashObj *)pInfo->q, varDataVal(val), varDataLen(val));        
+     }     
+
   }
 
   int32_t ret = 0;
@@ -3672,14 +3700,18 @@ static int32_t setQueryCond(tQueryInfo *queryColInfo, SQueryCond* pCond) {
 
   if (optr == TSDB_RELATION_GREATER || optr == TSDB_RELATION_GREATER_EQUAL ||
       optr == TSDB_RELATION_EQUAL || optr == TSDB_RELATION_NOT_EQUAL) {
-    pCond->start = calloc(1, sizeof(SEndPoint));
+    pCond->start       = calloc(1, sizeof(SEndPoint));
     pCond->start->optr = queryColInfo->optr;
-    pCond->start->v = queryColInfo->q;
+    pCond->start->v    = queryColInfo->q;
   } else if (optr == TSDB_RELATION_LESS || optr == TSDB_RELATION_LESS_EQUAL) {
-    pCond->end = calloc(1, sizeof(SEndPoint));
+    pCond->end       = calloc(1, sizeof(SEndPoint));
     pCond->end->optr = queryColInfo->optr;
-    pCond->end->v = queryColInfo->q;
-  } else if (optr == TSDB_RELATION_IN || optr == TSDB_RELATION_LIKE) {
+    pCond->end->v    = queryColInfo->q;
+  } else if (optr == TSDB_RELATION_IN) {
+    pCond->start       = calloc(1, sizeof(SEndPoint));
+    pCond->start->optr = queryColInfo->optr;
+    pCond->start->v    = queryColInfo->q; 
+  } else if (optr == TSDB_RELATION_LIKE) {
     assert(0);
   }
 
@@ -3764,6 +3796,19 @@ static void queryIndexedColumn(SSkipList* pSkipList, tQueryInfo* pQueryInfo, SAr
         taosArrayPush(result, &info);
       }
 
+    } else if (optr == TSDB_RELATION_IN) {
+      while(tSkipListIterNext(iter)) {
+        SSkipListNode* pNode = tSkipListIterGet(iter);
+
+        int32_t ret = pQueryInfo->compare(SL_GET_NODE_KEY(pSkipList, pNode), cond.start->v);
+        if (ret != 0) {
+          break;
+        }
+
+        STableKeyInfo info = {.pTable = (void*)SL_GET_NODE_DATA(pNode), .lastKey = TSKEY_INITIAL_VAL};
+        taosArrayPush(result, &info);
+      }
+      
     } else {
       assert(0);
     }
@@ -3857,7 +3902,7 @@ void getTableListfromSkipList(tExprNode *pExpr, SSkipList *pSkipList, SArray *re
     param->setupInfoFn(pExpr, param->pExtInfo);
 
     tQueryInfo *pQueryInfo = pExpr->_node.info;
-    if (pQueryInfo->indexed && pQueryInfo->optr != TSDB_RELATION_LIKE) {
+    if (pQueryInfo->indexed && (pQueryInfo->optr != TSDB_RELATION_LIKE && pQueryInfo->optr != TSDB_RELATION_IN)) {
       queryIndexedColumn(pSkipList, pQueryInfo, result);
     } else {
       queryIndexlessColumn(pSkipList, pQueryInfo, result, param->nodeFilterFn);
diff --git a/src/util/src/tcompare.c b/src/util/src/tcompare.c
index 09199eaee36a7233a3b31494ea3a515aa9ff78be..f91d13e6d0a4310181594b840631249bd1bcade8 100644
--- a/src/util/src/tcompare.c
+++ b/src/util/src/tcompare.c
@@ -17,6 +17,7 @@
 #include "ttype.h"
 #include "tcompare.h"
 #include "tarray.h"
+#include "hash.h"
 
 int32_t compareInt32Val(const void *pLeft, const void *pRight) {
   int32_t left = GET_INT32_VAL(pLeft), right = GET_INT32_VAL(pRight);
@@ -291,9 +292,12 @@ int32_t taosArrayCompareString(const void* a, const void* b) {
   return compareLenPrefixedStr(x, y);
 }
 
-static int32_t compareFindStrInArray(const void* pLeft, const void* pRight) {
-  const SArray* arr = (const SArray*) pRight;
-  return taosArraySearchString(arr, pLeft, taosArrayCompareString, TD_EQ) == NULL ? 0 : 1;
+//static int32_t compareFindStrInArray(const void* pLeft, const void* pRight) {
+//  const SArray* arr = (const SArray*) pRight;
+//  return taosArraySearchString(arr, pLeft, taosArrayCompareString, TD_EQ) == NULL ? 0 : 1;
+//}
+static int32_t compareFindItemInSet(const void *pLeft, const void* pRight)  {
+  return NULL != taosHashGet((SHashObj *)pRight, varDataVal(pLeft), varDataLen(pLeft)) ? 1 : 0;    
 }
 
 static int32_t compareWStrPatternComp(const void* pLeft, const void* pRight) {
@@ -325,7 +329,7 @@ __compar_fn_t getComparFunc(int32_t type, int32_t optr) {
       if (optr == TSDB_RELATION_LIKE) { /* wildcard query using like operator */
         comparFn = compareStrPatternComp;
       } else if (optr == TSDB_RELATION_IN) {
-        comparFn = compareFindStrInArray;
+        comparFn = compareFindItemInSet;
       } else { /* normal relational comparFn */
         comparFn = compareLenPrefixedStr;
       }
diff --git a/tests/pytest/query/in.py b/tests/pytest/query/in.py
new file mode 100644
index 0000000000000000000000000000000000000000..8644b74a45099fcaa7c7608d8d33140b0a30f82f
--- /dev/null
+++ b/tests/pytest/query/in.py
@@ -0,0 +1,163 @@
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+import sys
+import taos
+from util.log import tdLog
+from util.cases import tdCases
+from util.sql import tdSql
+from util.dnodes import tdDnodes
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+        self.ts = 1538548685000
+
+    def run(self):
+        tdSql.prepare()
+
+        print("==============step1")
+        tdSql.execute(
+            "create table if not exists st (ts timestamp, tagtype int) tags(dev nchar(50))")
+        tdSql.execute(
+            'CREATE TABLE if not exists dev_001 using st tags("dev_01")')
+        tdSql.execute(
+            'CREATE TABLE if not exists dev_002 using st tags("dev_02")')
+
+        print("==============step2")
+        tdSql.error("select * from db.st where ts in ('2020-05-13 10:00:00.000')")
+
+        tdSql.execute(
+            """INSERT INTO dev_001(ts, tagtype) VALUES('2020-05-13 10:00:00.000', 1),
+            ('2020-05-13 10:00:00.001', 1)
+             dev_002 VALUES('2020-05-13 10:00:00.001', 1)""")
+
+        # TAG nchar
+        tdSql.query('select count(ts) from db.st where dev in ("dev_01")')
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 2)
+
+        tdSql.query('select count(ts) from db.st where dev in ("dev_01", "dev_01")')
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 2)
+
+        tdSql.query('select count(ts) from db.st where dev in ("dev_01", "dev_01", "dev_02")')
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 3)
+
+        
+        # colume int 
+        tdSql.query("select count(ts) from db.st where tagtype in (1)")
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 3)
+
+        tdSql.query("select count(ts) from db.st where tagtype in (1, 2)")
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 3)
+        tdSql.execute(
+            """INSERT INTO dev_001(ts, tagtype) VALUES('2020-05-13 10:00:01.000', 2),
+            ('2020-05-13 10:00:02.001', 2)
+             dev_002 VALUES('2020-05-13 10:00:03.001', 2)""")
+
+        tdSql.query("select count(ts) from db.st where tagtype in (1, 2)")
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 6)
+
+        tdSql.execute("create table tb(ts timestamp, c1 int, c2 binary(10), c3 nchar(10), c4 float, c5 bool)")
+        for i in range(10):
+            tdSql.execute("insert into tb values(%d, %d, 'binary%d', 'nchar%d', %f, %d)" % (self.ts + i, i, i, i, i + 0.1, i % 2))
+
+        #binary 
+        tdSql.query('select count(ts) from db.tb where c2 in ("binary1")')
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 1)
+        
+        tdSql.query('select count(ts) from db.tb where c2 in ("binary1", "binary2", "binary1")')
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 2)
+
+        #bool 
+        #tdSql.query('select count(ts) from db.tb where c5 in (true)')
+        #tdSql.checkRows(1)
+        #tdSql.checkData(0, 0, 5)
+
+        #float
+        #tdSql.query('select count(ts) from db.tb where c4 in (0.1)')
+        #tdSql.checkRows(1)
+        #tdSql.checkData(0, 0, 1)
+
+        #nchar 
+        tdSql.query('select count(ts) from db.tb where c3 in ("nchar0")')
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 1)
+        
+        
+        #tdSql.query("select tbname, dev from dev_001") 
+        #tdSql.checkRows(1)
+        #tdSql.checkData(0, 0, 'dev_001')
+        #tdSql.checkData(0, 1, 'dev_01')
+
+        #tdSql.query("select tbname, dev, tagtype from dev_001") 
+        #tdSql.checkRows(2)
+
+        ### test case for https://jira.taosdata.com:18080/browse/TD-1930
+        #tdSql.execute("create table tb(ts timestamp, c1 int, c2 binary(10), c3 nchar(10), c4 float, c5 bool)")
+        #for i in range(10):
+        #    tdSql.execute("insert into tb values(%d, %d, 'binary%d', 'nchar%d', %f, %d)" % (self.ts + i, i, i, i, i + 0.1, i % 2))
+        #
+        #tdSql.error("select * from tb where c2 = binary2")
+        #tdSql.error("select * from tb where c3 = nchar2")
+
+        #tdSql.query("select * from tb where c2 = 'binary2' ")
+        #tdSql.checkRows(1)
+
+        #tdSql.query("select * from tb where c3 = 'nchar2' ")
+        #tdSql.checkRows(1)
+
+        #tdSql.query("select * from tb where c1 = '2' ")
+        #tdSql.checkRows(1)
+
+        #tdSql.query("select * from tb where c1 = 2 ")
+        #tdSql.checkRows(1)
+
+        #tdSql.query("select * from tb where c4 = '0.1' ")
+        #tdSql.checkRows(1)
+
+        #tdSql.query("select * from tb where c4 = 0.1 ")
+        #tdSql.checkRows(1)
+
+        #tdSql.query("select * from tb where c5 = true ")
+        #tdSql.checkRows(5)
+
+        #tdSql.query("select * from tb where c5 = 'true' ")
+        #tdSql.checkRows(5)
+
+        ## For jira: https://jira.taosdata.com:18080/browse/TD-2850
+        #tdSql.execute("create database 'Test' ")
+        #tdSql.execute("use 'Test' ")
+        #tdSql.execute("create table 'TB'(ts timestamp, 'Col1' int) tags('Tag1' int)")
+        #tdSql.execute("insert into 'Tb0' using tb tags(1) values(now, 1)")
+        #tdSql.query("select * from tb")
+        #tdSql.checkRows(1)
+
+        
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
diff --git a/tests/script/general/parser/where.sim b/tests/script/general/parser/where.sim
index 157c41ce58ddf4775c0715f35ccd77e46a7dd221..6dfea3d2e70e75f82fd7bd48cd5578971e158de4 100644
--- a/tests/script/general/parser/where.sim
+++ b/tests/script/general/parser/where.sim
@@ -151,18 +151,12 @@ sql_error select last(*) from wh_mt1 where c5 in ('1')
 sql_error select last(*) from wh_mt1_tb1 where c5 in ('1')
 sql_error select last(*) from wh_mt1 where c6 in ('1')
 sql_error select last(*) from wh_mt1_tb1 where c6 in ('1')
-sql_error select last(*) from wh_mt1 where c7 in ('binary')
-sql_error select last(*) from wh_mt1_tb1 where c7 in ('binary')
-sql_error select last(*) from wh_mt1 where c8 in ('nchar')
-sql_error select last(*) from wh_mt1_tb1 where c9 in (true, false)
+#sql_error select last(*) from wh_mt1 where c7 in ('binary')
+#sql_error select last(*) from wh_mt1_tb1 where c7 in ('binary')
+#sql_error select last(*) from wh_mt1 where c8 in ('nchar')
+#sql_error select last(*) from wh_mt1_tb1 where c9 in (true, false)
 sql_error select last(*) from wh_mt1 where c10 in ('2019-01-01 00:00:00.000')
 sql_error select last(*) from wh_mt1_tb1 where c10 in ('2019-01-01 00:00:00.000')
-sql_error select last(*) from wh_mt1 where t1 in ('binary')
-sql_error select last(*) from wh_mt1 where t2 in (1)
-sql_error select last(*) from wh_mt1 where t3 in (1)
-sql_error select last(*) from wh_mt1 where t4 in (1)
-sql_error select last(*) from wh_mt1 where t5 in (1)
-sql_error select last(*) from wh_mt1 where t6 in (1)
 sql select last(*) from wh_mt1 where c1 = 1
 if $rows != 1 then
   return -1
@@ -359,4 +353,4 @@ if $rows != 0 then
 endi
 
 
-system sh/exec.sh -n dnode1 -s stop -x SIGINT
\ No newline at end of file
+system sh/exec.sh -n dnode1 -s stop -x SIGINT