diff --git a/source/libs/function/src/builtins.c b/source/libs/function/src/builtins.c
index 23d7185508433417f1eb163175848774f39fe427..03f8a228d576355c104ee1ec57410f37b336b430 100644
--- a/source/libs/function/src/builtins.c
+++ b/source/libs/function/src/builtins.c
@@ -44,6 +44,7 @@ void static addDbPrecisonParam(SNodeList** pList, uint8_t precision) {
   pVal->literal = NULL;
   pVal->isDuration = false;
   pVal->translate = true;
+  pVal->notReserved = true;
   pVal->node.resType.type = TSDB_DATA_TYPE_TINYINT;
   pVal->node.resType.bytes = tDataTypes[TSDB_DATA_TYPE_TINYINT].bytes;
   pVal->node.resType.precision = precision;
@@ -1016,6 +1017,10 @@ static int32_t translateIrate(SFunctionNode* pFunc, char* pErrBuf, int32_t len)
     return invaildFuncParaTypeErrMsg(pErrBuf, len, pFunc->functionName);
   }
 
+  //add database precision as param
+  uint8_t dbPrec = pFunc->node.resType.precision;
+  addDbPrecisonParam(&pFunc->pParameterList, dbPrec);
+
   pFunc->node.resType = (SDataType){.bytes = tDataTypes[TSDB_DATA_TYPE_DOUBLE].bytes, .type = TSDB_DATA_TYPE_DOUBLE};
   return TSDB_CODE_SUCCESS;
 }
diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index a75d5a2ecbb6c192d0461137c4982ab3a26898d9..07b2a2375f227aff8c19a9c2d69381c0341426bf 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -5508,7 +5508,7 @@ int32_t irateFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   pResInfo->isNullRes = (pResInfo->numOfRes == 0) ? 1 : 0;
 
   SRateInfo* pInfo = GET_ROWCELL_INTERBUF(pResInfo);
-  double result = doCalcRate(pInfo, 1000);
+  double result = doCalcRate(pInfo, (double)TSDB_TICK_PER_SECOND(pCtx->param[1].param.i));
   colDataAppend(pCol, pBlock->info.rows, (const char*)&result, pResInfo->isNullRes);
 
   return pResInfo->numOfRes;