[TBASE-1462]

src/client/src/tscFunctionImpl.c

@@ -138,6 +138,19 @@ typedef struct STSCompInfo {
   STSBuf *pTSBuf;
 } STSCompInfo;
 
+typedef struct SRateInfo {
+  int64_t CorrectionValue;
+  int64_t firstValue;
+  TSKEY   firstKey;
+  int64_t lastValue;
+  TSKEY   lastKey;
+  int8_t  hasResult;  // flag to denote has value
+  bool    isIRate;    // true for IRate functions, false for Rate functions
+  int64_t num;        // for sum/avg
+  double  sum;        // for sum/avg
+} SRateInfo;
+
+
 int32_t getResultDataInfo(int32_t dataType, int32_t dataBytes, int32_t functionId, int32_t param, int16_t *type,
                           int16_t *bytes, int16_t *intermediateResBytes, int16_t extLength, bool isSuperTable) {
   if (!isValidDataType(dataType, dataBytes)) {
@@ -192,7 +205,12 @@ int32_t getResultDataInfo(int32_t dataType, int32_t dataBytes, int32_t functionI
       *type = TSDB_DATA_TYPE_BINARY;
       *bytes = sizeof(SAvgInfo);
       *intermediateResBytes = *bytes;
+      return TSDB_CODE_SUCCESS;
 
+    } else if (functionId >= TSDB_FUNC_RATE && functionId <= TSDB_FUNC_AVG_IRATE) {
+      *type = TSDB_DATA_TYPE_DOUBLE;
+      *bytes = sizeof(SRateInfo);
+      *intermediateResBytes = sizeof(SRateInfo);
       return TSDB_CODE_SUCCESS;
     } else if (functionId == TSDB_FUNC_TOP || functionId == TSDB_FUNC_BOTTOM) {
       *type = TSDB_DATA_TYPE_BINARY;
@@ -253,6 +271,10 @@ int32_t getResultDataInfo(int32_t dataType, int32_t dataBytes, int32_t functionI
     *type = TSDB_DATA_TYPE_DOUBLE;
     *bytes = sizeof(double);
     *intermediateResBytes = sizeof(SAvgInfo);
+  } else if (functionId >= TSDB_FUNC_RATE && functionId <= TSDB_FUNC_AVG_IRATE) {
+    *type = TSDB_DATA_TYPE_DOUBLE;
+    *bytes = sizeof(double);
+    *intermediateResBytes = sizeof(SRateInfo);
   } else if (functionId == TSDB_FUNC_STDDEV) {
     *type = TSDB_DATA_TYPE_DOUBLE;
     *bytes = sizeof(double);
@@ -4348,6 +4370,462 @@ static void ts_comp_finalize(SQLFunctionCtx *pCtx) {
   doFinalizer(pCtx);
 }
 
+//////////////////////////////////////////////////////////////////////////////////////////////
+// RATE functions
+
+static double do_calc_rate(const SRateInfo* pRateInfo) {
+  if ((INT64_MIN == pRateInfo->lastKey) || (INT64_MIN == pRateInfo->firstKey) || (pRateInfo->firstKey >= pRateInfo->lastKey)) {
+    return 0;
+  }
+  
+  int64_t diff = 0;
+
+  if (pRateInfo->isIRate) {
+    diff = pRateInfo->lastValue;
+    if (diff >= pRateInfo->firstValue) {
+      diff -= pRateInfo->firstValue;
+    }
+  } else {
+    diff = pRateInfo->CorrectionValue + pRateInfo->lastValue -  pRateInfo->firstValue;
+    if (diff <= 0) {
+      return 0;
+    }
+  }
+
+  int64_t duration = pRateInfo->lastKey - pRateInfo->firstKey;
+  duration = (duration + 500) / 1000;
+
+  double resultVal = ((double)diff) / duration;
+
+  pTrace("do_calc_rate() isIRate:%d firstKey:%" PRId64 " lastKey:%" PRId64 " firstValue:%" PRId64 " lastValue:%" PRId64 " CorrectionValue:%" PRId64 " resultVal:%f", 
+            pRateInfo->isIRate, pRateInfo->firstKey, pRateInfo->lastKey, pRateInfo->firstValue, pRateInfo->lastValue, pRateInfo->CorrectionValue, resultVal);
+  
+  return resultVal;
+}
+
+
+static bool rate_function_setup(SQLFunctionCtx *pCtx) {
+  if (!function_setup(pCtx)) {
+    return false;
+  }
+
+  SResultInfo *pResInfo = GET_RES_INFO(pCtx);  //->aOutputBuf + pCtx->outputBytes;
+  SRateInfo *   pInfo = pResInfo->interResultBuf;
+
+  pInfo->CorrectionValue = 0;
+  pInfo->firstKey    = INT64_MIN;
+  pInfo->lastKey     = INT64_MIN;
+  pInfo->firstValue  = INT64_MIN;
+  pInfo->lastValue   = INT64_MIN;
+  pInfo->num = 0;
+  pInfo->sum = 0;
+  
+  pInfo->hasResult = 0;
+  pInfo->isIRate = ((pCtx->functionId == TSDB_FUNC_IRATE) || (pCtx->functionId == TSDB_FUNC_SUM_IRATE) || (pCtx->functionId == TSDB_FUNC_AVG_IRATE));
+  return true;
+}
+
+
+static void rate_function(SQLFunctionCtx *pCtx) {
+
+  assert(IS_DATA_BLOCK_LOADED(pCtx->blockStatus));
+
+  int32_t      notNullElems = 0;
+  SResultInfo *pResInfo     = GET_RES_INFO(pCtx);
+  SRateInfo   *pRateInfo    = (SRateInfo *)pResInfo->interResultBuf;
+  TSKEY       *primaryKey   = pCtx->ptsList;
+
+  pTrace("%p rate_function() size:%d, hasNull:%d", pCtx, pCtx->size, pCtx->hasNull);
+
+  for (int32_t i = 0; i < pCtx->size; ++i) {
+    char *pData = GET_INPUT_CHAR_INDEX(pCtx, i);
+    if (pCtx->hasNull && isNull(pData, pCtx->inputType)) {
+      pTrace("%p rate_function() index of null data:%d", pCtx, i);
+      continue;
+    }
+
+    notNullElems++;
+    
+    int64_t v = 0;
+    switch (pCtx->inputType) {
+      case TSDB_DATA_TYPE_TINYINT:
+        v = (int64_t)GET_INT8_VAL(pData);
+        break;
+      case TSDB_DATA_TYPE_SMALLINT:
+        v = (int64_t)GET_INT16_VAL(pData);
+        break;
+      case TSDB_DATA_TYPE_INT:
+        v = (int64_t)GET_INT32_VAL(pData);
+        break;
+      case TSDB_DATA_TYPE_BIGINT:
+        v = (int64_t)GET_INT64_VAL(pData);
+        break;
+      default:
+        assert(0);
+    }
+
+    if ((INT64_MIN == pRateInfo->firstValue) || (INT64_MIN == pRateInfo->firstKey)) {
+      pRateInfo->firstValue = v;
+      pRateInfo->firstKey = primaryKey[i];
+    
+      pTrace("firstValue:%" PRId64 " firstKey:%" PRId64, pRateInfo->firstValue, pRateInfo->firstKey);
+    }
+
+    if (INT64_MIN == pRateInfo->lastValue) {
+      pRateInfo->lastValue = v;
+    } else if (v < pRateInfo->lastValue) {
+      pRateInfo->CorrectionValue += pRateInfo->lastValue;
+      pTrace("CorrectionValue:%" PRId64, pRateInfo->CorrectionValue);
+    }
+
+    pRateInfo->lastValue = v;
+    pRateInfo->lastKey   = primaryKey[i];
+    pTrace("lastValue:%" PRId64 " lastKey:%" PRId64, pRateInfo->lastValue, pRateInfo->lastKey);
+  }
+
+  if (!pCtx->hasNull) {
+    assert(pCtx->size == notNullElems);
+  }
+
+  SET_VAL(pCtx, notNullElems, 1);
+
+  if (notNullElems > 0) {
+    pRateInfo->hasResult = DATA_SET_FLAG;
+    pResInfo->hasResult  = DATA_SET_FLAG;
+  }
+
+  // keep the data into the final output buffer for super table query since this execution may be the last one
+  if (pResInfo->superTableQ) {
+    memcpy(pCtx->aOutputBuf, pResInfo->interResultBuf, sizeof(SRateInfo));
+  }
+}
+
+static void rate_function_f(SQLFunctionCtx *pCtx, int32_t index) {
+  void *pData = GET_INPUT_CHAR_INDEX(pCtx, index);
+  if (pCtx->hasNull && isNull(pData, pCtx->inputType)) {
+    return;
+  }
+
+  // NOTE: keep the intermediate result into the interResultBuf
+  SResultInfo *pResInfo   = GET_RES_INFO(pCtx);
+  SRateInfo   *pRateInfo  = (SRateInfo *)pResInfo->interResultBuf;
+  TSKEY       *primaryKey = pCtx->ptsList;
+
+  int64_t v = 0;
+  switch (pCtx->inputType) {
+    case TSDB_DATA_TYPE_TINYINT:
+      v = (int64_t)GET_INT8_VAL(pData);
+      break;
+    case TSDB_DATA_TYPE_SMALLINT:
+      v = (int64_t)GET_INT16_VAL(pData);
+      break;
+    case TSDB_DATA_TYPE_INT:
+      v = (int64_t)GET_INT32_VAL(pData);
+      break;
+    case TSDB_DATA_TYPE_BIGINT:
+      v = (int64_t)GET_INT64_VAL(pData);
+      break;
+    default:
+      assert(0);
+  }
+  
+  if ((INT64_MIN == pRateInfo->firstValue) || (INT64_MIN == pRateInfo->firstKey)) {
+    pRateInfo->firstValue = v;
+    pRateInfo->firstKey = primaryKey[index];
+  }    
+  
+  if (INT64_MIN == pRateInfo->lastValue) {
+    pRateInfo->lastValue = v;
+  } else if (v < pRateInfo->lastValue) {
+    pRateInfo->CorrectionValue += pRateInfo->lastValue;
+  }
+
+  pRateInfo->lastValue = v;
+  pRateInfo->lastKey   = primaryKey[index];
+
+  pTrace("====%p rate_function_f() index:%d lastValue:%" PRId64 " lastKey:%" PRId64 " CorrectionValue:%" PRId64, pCtx, index, pRateInfo->lastValue, pRateInfo->lastKey, pRateInfo->CorrectionValue);
+
+  SET_VAL(pCtx, 1, 1);
+
+  // set has result flag
+  pRateInfo->hasResult = DATA_SET_FLAG;
+  pResInfo->hasResult  = DATA_SET_FLAG;
+
+  // keep the data into the final output buffer for super table query since this execution may be the last one
+  if (pResInfo->superTableQ) {
+    memcpy(pCtx->aOutputBuf, pResInfo->interResultBuf, sizeof(SRateInfo));
+  }
+}
+
+
+
+static void rate_func_merge(SQLFunctionCtx *pCtx) {
+  SResultInfo *pResInfo = GET_RES_INFO(pCtx);
+  assert(pResInfo->superTableQ);
+
+  pTrace("rate_func_merge() size:%d", pCtx->size);
+
+  //SRateInfo *pRateInfo = (SRateInfo *)pResInfo->interResultBuf;
+  SRateInfo *pBuf      = (SRateInfo *)pCtx->aOutputBuf;
+  char      *indicator = pCtx->aInputElemBuf;
+
+  assert(1 == pCtx->size);
+
+  int32_t numOfNotNull = 0;
+  for (int32_t i = 0; i < pCtx->size; ++i, indicator += sizeof(SRateInfo)) {
+    SRateInfo *pInput = (SRateInfo *)indicator;
+    if (DATA_SET_FLAG != pInput->hasResult) {
+      continue;
+    }
+
+    numOfNotNull++;
+    memcpy(pBuf, pInput, sizeof(SRateInfo));
+    pTrace("%p rate_func_merge() isIRate:%d firstKey:%" PRId64 " lastKey:%" PRId64 " firstValue:%" PRId64 " lastValue:%" PRId64 " CorrectionValue:%" PRId64, 
+              pCtx, pInput->isIRate, pInput->firstKey, pInput->lastKey, pInput->firstValue, pInput->lastValue, pInput->CorrectionValue); 
+  }
+
+  SET_VAL(pCtx, numOfNotNull, 1);
+
+  if (numOfNotNull > 0) {
+    pBuf->hasResult = DATA_SET_FLAG;
+  }
+  
+  return;
+}
+
+
+
+static void rate_func_copy(SQLFunctionCtx *pCtx) {
+  assert(pCtx->inputType == TSDB_DATA_TYPE_BINARY);
+
+  SResultInfo *pResInfo = GET_RES_INFO(pCtx);
+  memcpy(pResInfo->interResultBuf, pCtx->aInputElemBuf, (size_t)pCtx->inputBytes);
+  pResInfo->hasResult = ((SRateInfo*)pCtx->aInputElemBuf)->hasResult;
+
+  SRateInfo* pRateInfo = (SRateInfo*)pCtx->aInputElemBuf;
+  pTrace("%p rate_func_second_merge() firstKey:%" PRId64 " lastKey:%" PRId64 " firstValue:%" PRId64 " lastValue:%" PRId64 " CorrectionValue:%" PRId64 " hasResult:%d", 
+            pCtx, pRateInfo->firstKey, pRateInfo->lastKey, pRateInfo->firstValue, pRateInfo->lastValue, pRateInfo->CorrectionValue, pRateInfo->hasResult);
+}
+
+
+
+static void rate_finalizer(SQLFunctionCtx *pCtx) {
+  SResultInfo *pResInfo  = GET_RES_INFO(pCtx);
+  SRateInfo   *pRateInfo = (SRateInfo *)pResInfo->interResultBuf;
+  
+  pTrace("%p isIRate:%d firstKey:%" PRId64 " lastKey:%" PRId64 " firstValue:%" PRId64 " lastValue:%" PRId64 " CorrectionValue:%" PRId64 " hasResult:%d", 
+          pCtx, pRateInfo->isIRate, pRateInfo->firstKey, pRateInfo->lastKey, pRateInfo->firstValue, pRateInfo->lastValue, pRateInfo->CorrectionValue, pRateInfo->hasResult);
+
+  if (pRateInfo->hasResult != DATA_SET_FLAG) {
+    setNull(pCtx->aOutputBuf, TSDB_DATA_TYPE_DOUBLE, sizeof(double));
+    return;
+  }
+  
+  *(double*)pCtx->aOutputBuf = do_calc_rate(pRateInfo);
+  
+  pTrace("rate_finalizer() output result:%f", *(double *)pCtx->aOutputBuf);
+    
+  // cannot set the numOfIteratedElems again since it is set during previous iteration
+  pResInfo->numOfRes  = 1;
+  pResInfo->hasResult = DATA_SET_FLAG;
+
+  doFinalizer(pCtx);
+}
+
+
+static void irate_function(SQLFunctionCtx *pCtx) {
+
+  assert(IS_DATA_BLOCK_LOADED(pCtx->blockStatus));
+
+  int32_t       notNullElems = 0;
+  SResultInfo  *pResInfo     = GET_RES_INFO(pCtx);
+  SRateInfo   *pRateInfo    = (SRateInfo *)pResInfo->interResultBuf;
+  TSKEY        *primaryKey   = pCtx->ptsList;
+
+  pTrace("%p irate_function() size:%d, hasNull:%d", pCtx, pCtx->size, pCtx->hasNull);
+
+  if (pCtx->size < 1) {
+    return;
+  }
+
+  for (int32_t i = pCtx->size - 1; i >= 0; --i) {
+    char *pData = GET_INPUT_CHAR_INDEX(pCtx, i);
+    if (pCtx->hasNull && isNull(pData, pCtx->inputType)) {
+      pTrace("%p irate_function() index of null data:%d", pCtx, i);
+      continue;
+    }
+
+    notNullElems++;
+    
+    int64_t v = 0;
+    switch (pCtx->inputType) {
+      case TSDB_DATA_TYPE_TINYINT:
+        v = (int64_t)GET_INT8_VAL(pData);
+        break;
+      case TSDB_DATA_TYPE_SMALLINT:
+        v = (int64_t)GET_INT16_VAL(pData);
+        break;
+      case TSDB_DATA_TYPE_INT:
+        v = (int64_t)GET_INT32_VAL(pData);
+        break;
+      case TSDB_DATA_TYPE_BIGINT:
+        v = (int64_t)GET_INT64_VAL(pData);
+        break;
+      default:
+        assert(0);
+    }
+
+    // TODO: calc once if only call this function once ????
+    if ((INT64_MIN == pRateInfo->lastKey) || (INT64_MIN == pRateInfo->lastValue)) {
+      pRateInfo->lastValue = v;
+      pRateInfo->lastKey   = primaryKey[i];
+    
+      pTrace("%p irate_function() lastValue:%" PRId64 " lastKey:%" PRId64, pCtx, pRateInfo->lastValue, pRateInfo->lastKey);
+      continue;
+    }
+
+    if ((INT64_MIN == pRateInfo->firstKey) || (INT64_MIN == pRateInfo->firstValue)){
+      pRateInfo->firstValue = v;
+      pRateInfo->firstKey = primaryKey[i];
+    
+      pTrace("%p irate_function() firstValue:%" PRId64 " firstKey:%" PRId64, pCtx, pRateInfo->firstValue, pRateInfo->firstKey);
+      break;
+    }
+  }
+
+  SET_VAL(pCtx, notNullElems, 1);
+
+  if (notNullElems > 0) {
+    pRateInfo->hasResult = DATA_SET_FLAG;
+    pResInfo->hasResult  = DATA_SET_FLAG;
+  }
+
+  // keep the data into the final output buffer for super table query since this execution may be the last one
+  if (pResInfo->superTableQ) {
+    memcpy(pCtx->aOutputBuf, pResInfo->interResultBuf, sizeof(SRateInfo));
+  }
+}
+
+static void irate_function_f(SQLFunctionCtx *pCtx, int32_t index) {
+  void *pData = GET_INPUT_CHAR_INDEX(pCtx, index);
+  if (pCtx->hasNull && isNull(pData, pCtx->inputType)) {
+    return;
+  }
+
+  // NOTE: keep the intermediate result into the interResultBuf
+  SResultInfo  *pResInfo   = GET_RES_INFO(pCtx);
+  SRateInfo   *pRateInfo  = (SRateInfo *)pResInfo->interResultBuf;
+  TSKEY        *primaryKey = pCtx->ptsList;
+
+  int64_t v = 0;
+  switch (pCtx->inputType) {
+    case TSDB_DATA_TYPE_TINYINT:
+      v = (int64_t)GET_INT8_VAL(pData);
+      break;
+    case TSDB_DATA_TYPE_SMALLINT:
+      v = (int64_t)GET_INT16_VAL(pData);
+      break;
+    case TSDB_DATA_TYPE_INT:
+      v = (int64_t)GET_INT32_VAL(pData);
+      break;
+    case TSDB_DATA_TYPE_BIGINT:
+      v = (int64_t)GET_INT64_VAL(pData);
+      break;
+    default:
+      assert(0);
+  }
+
+  pRateInfo->firstKey   = pRateInfo->lastKey;
+  pRateInfo->firstValue = pRateInfo->lastValue;
+  
+  pRateInfo->lastValue = v;
+  pRateInfo->lastKey   = primaryKey[index];
+
+  pTrace("====%p irate_function_f() index:%d lastValue:%" PRId64 " lastKey:%" PRId64 " firstValue:%" PRId64 " firstKey:%" PRId64, pCtx, index, pRateInfo->lastValue, pRateInfo->lastKey, pRateInfo->firstValue , pRateInfo->firstKey);
+
+  SET_VAL(pCtx, 1, 1);
+
+  // set has result flag
+  pRateInfo->hasResult = DATA_SET_FLAG;
+  pResInfo->hasResult  = DATA_SET_FLAG;
+
+  // keep the data into the final output buffer for super table query since this execution may be the last one
+  if (pResInfo->superTableQ) {
+    memcpy(pCtx->aOutputBuf, pResInfo->interResultBuf, sizeof(SRateInfo));
+  }
+}
+
+static void do_sumrate_merge(SQLFunctionCtx *pCtx) {
+  SResultInfo *pResInfo = GET_RES_INFO(pCtx);
+  assert(pResInfo->superTableQ);
+
+  SRateInfo *pRateInfo = (SRateInfo *)pResInfo->interResultBuf;
+  char *    input = GET_INPUT_CHAR(pCtx);
+
+  for (int32_t i = 0; i < pCtx->size; ++i, input += pCtx->inputBytes) {
+    SRateInfo *pInput = (SRateInfo *)input;
+    
+    pTrace("%p do_sumrate_merge() hasResult:%d input num:%" PRId64 " input sum:%f total num:%" PRId64 " total sum:%f", pCtx, pInput->hasResult, pInput->num, pInput->sum, pRateInfo->num, pRateInfo->sum);
+  
+    if (pInput->hasResult != DATA_SET_FLAG) {
+      continue;
+    } else if (pInput->num == 0) {
+      pRateInfo->sum += do_calc_rate(pInput);
+      pRateInfo->num++;
+    } else {
+      pRateInfo->sum += pInput->sum;
+      pRateInfo->num += pInput->num;
+    }
+    pRateInfo->hasResult = DATA_SET_FLAG;
+  }
+
+  // if the data set hasResult is not set, the result is null
+  if (DATA_SET_FLAG == pRateInfo->hasResult) {
+    pResInfo->hasResult = DATA_SET_FLAG;
+    SET_VAL(pCtx, pRateInfo->num, 1);
+    memcpy(pCtx->aOutputBuf, pResInfo->interResultBuf, sizeof(SRateInfo));
+  }
+}
+
+static void sumrate_func_merge(SQLFunctionCtx *pCtx) {
+  pTrace("%p sumrate_func_merge() process ...", pCtx);
+  do_sumrate_merge(pCtx);
+}
+
+static void sumrate_func_second_merge(SQLFunctionCtx *pCtx) {
+  pTrace("%p sumrate_func_second_merge() process ...", pCtx);
+  do_sumrate_merge(pCtx);
+}
+
+static void sumrate_finalizer(SQLFunctionCtx *pCtx) {
+  SResultInfo *pResInfo  = GET_RES_INFO(pCtx);
+  SRateInfo   *pRateInfo = (SRateInfo *)pResInfo->interResultBuf;
+
+  pTrace("%p sumrate_finalizer() superTableQ:%d num:%" PRId64 " sum:%f hasResult:%d", pCtx, pResInfo->superTableQ, pRateInfo->num, pRateInfo->sum, pRateInfo->hasResult);
+
+  if (pRateInfo->hasResult != DATA_SET_FLAG) {
+    setNull(pCtx->aOutputBuf, TSDB_DATA_TYPE_DOUBLE, sizeof(double));
+    return;
+  }
+
+  if (pRateInfo->num == 0) {
+      // from meter
+      *(double*)pCtx->aOutputBuf = do_calc_rate(pRateInfo);
+  } else if (pCtx->functionId == TSDB_FUNC_SUM_RATE || pCtx->functionId == TSDB_FUNC_SUM_IRATE) {
+      *(double*)pCtx->aOutputBuf = pRateInfo->sum;
+  } else {
+      *(double*)pCtx->aOutputBuf = pRateInfo->sum / pRateInfo->num;
+  }
+
+  pResInfo->numOfRes  = 1;
+  pResInfo->hasResult = DATA_SET_FLAG;
+  doFinalizer(pCtx);
+}
+
+
+/////////////////////////////////////////////////////////////////////////////////////////////
+
+
 /*
  * function compatible list.
  * tag and ts are not involved in the compatibility check
@@ -4359,23 +4837,18 @@ static void ts_comp_finalize(SQLFunctionCtx *pCtx) {
  *    e.g., count/sum/avg/min/max/stddev/percentile/apercentile/first/last...
  *
  */
-int32_t funcCompatDefList[28] = {
-    /*
-     * count, sum, avg, min, max, stddev, percentile, apercentile, first, last
-     */
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-
-    /*
-     * last_row, top, bottom, spread, twa, leastsqr, ts, ts_dummy, tag_dummy, ts_z, tag
-     */
-    4, -1, -1, 1, 1, 1, 1, 1, 1, -1, 1,
-
-    /*
-     * colprj, tagprj, arithmetic, diff, first_dist, last_dist, interp
-     */
-    1, 1, 1, -1, 1, 1, 5};
+int32_t funcCompatDefList[] = {
+  // count,       sum,      avg,       min,      max,  stddev,    percentile, apercentile, first,   last
+       1,          1,        1,         1,        1,      1,          1,           1,        1,      1,
+  // last_row,    top,    bottom,     spread,    twa,  leastsqr,     ts,       ts_dummy, tag_dummy, ts_z
+       4,         -1,       -1,         1,        1,      1,          1,           1,        1,     -1,
+  //  tag,       colprj,  tagprj,   arithmetic, diff, first_dist, last_dist,    interp      rate   irate
+       1,          1,        1,         1,       -1,      1,          1,           5,        1,      1,
+  // sum_rate, sum_irate, avg_rate, avg_irate
+       1,          1,        1,         1,
+};
 
-SQLAggFuncElem aAggs[28] = {{
+SQLAggFuncElem aAggs[] = {{
                                 // 0, count function does not invoke the finalize function
                                 "count",
                                 TSDB_FUNC_COUNT,
@@ -4798,4 +5271,94 @@ SQLAggFuncElem aAggs[28] = {{
                                 noop1,
                                 copy_function,
                                 no_data_info,
+                            },
+                            {
+                                // 28
+                                "rate",
+                                TSDB_FUNC_RATE,
+                                TSDB_FUNC_RATE,
+                                TSDB_BASE_FUNC_SO | TSDB_FUNCSTATE_NEED_TS,
+                                rate_function_setup,
+                                rate_function,
+                                rate_function_f,
+                                no_next_step,
+                                rate_finalizer,
+                                rate_func_merge,
+                                rate_func_copy,
+                                data_req_load_info,
+                            },
+                            {
+                                // 29
+                                "irate",
+                                TSDB_FUNC_IRATE,
+                                TSDB_FUNC_IRATE,
+                                TSDB_BASE_FUNC_SO | TSDB_FUNCSTATE_NEED_TS,
+                                rate_function_setup,
+                                irate_function,
+                                irate_function_f,
+                                no_next_step,
+                                rate_finalizer,
+                                rate_func_merge,
+                                rate_func_copy,
+                                data_req_load_info,
+                            },
+                            {
+                                // 30
+                                "sum_rate",
+                                TSDB_FUNC_SUM_RATE,
+                                TSDB_FUNC_SUM_RATE,
+                                TSDB_BASE_FUNC_SO | TSDB_FUNCSTATE_NEED_TS,
+                                rate_function_setup,
+                                rate_function,
+                                rate_function_f,
+                                no_next_step,
+                                sumrate_finalizer,
+                                sumrate_func_merge,
+                                sumrate_func_second_merge,
+                                data_req_load_info,
+                            },
+                            {
+                                // 31
+                                "sum_irate",
+                                TSDB_FUNC_SUM_IRATE,
+                                TSDB_FUNC_SUM_IRATE,
+                                TSDB_BASE_FUNC_SO | TSDB_FUNCSTATE_NEED_TS,
+                                rate_function_setup,
+                                irate_function,
+                                irate_function_f,
+                                no_next_step,
+                                sumrate_finalizer,
+                                sumrate_func_merge,
+                                sumrate_func_second_merge,
+                                data_req_load_info,
+                            },
+                            {
+                                // 32
+                                "avg_rate",
+                                TSDB_FUNC_AVG_RATE,
+                                TSDB_FUNC_AVG_RATE,
+                                TSDB_BASE_FUNC_SO | TSDB_FUNCSTATE_NEED_TS,
+                                rate_function_setup,
+                                rate_function,
+                                rate_function_f,
+                                no_next_step,
+                                sumrate_finalizer,
+                                sumrate_func_merge,
+                                sumrate_func_second_merge,
+                                data_req_load_info,
+                            },
+                            {
+                                // 33
+                                "avg_irate",
+                                TSDB_FUNC_AVG_IRATE,
+                                TSDB_FUNC_AVG_IRATE,
+                                TSDB_BASE_FUNC_SO | TSDB_FUNCSTATE_NEED_TS,
+                                rate_function_setup,
+                                irate_function,
+                                irate_function_f,
+                                no_next_step,
+                                sumrate_finalizer,
+                                sumrate_func_merge,
+                                sumrate_func_second_merge,
+                                data_req_load_info,
                             }};

src/client/src/tscSQLParser.c

@@ -1122,7 +1122,7 @@ int32_t parseSelectClause(SSqlCmd* pCmd, int32_t clauseIndex, tSQLExprList* pSel
       if (addProjectionExprAndResultField(pQueryInfo, pItem) != TSDB_CODE_SUCCESS) {
         return TSDB_CODE_INVALID_SQL;
       }
-    } else if (pItem->pNode->nSQLOptr >= TK_COUNT && pItem->pNode->nSQLOptr <= TK_LAST_ROW) {
+    } else if (pItem->pNode->nSQLOptr >= TK_COUNT && pItem->pNode->nSQLOptr <= TK_AVG_IRATE) {
       // sql function in selection clause, append sql function info in pSqlCmd structure sequentially
       if (addExprAndResultField(pQueryInfo, outputIndex, pItem) != TSDB_CODE_SUCCESS) {
         return TSDB_CODE_INVALID_SQL;
@@ -1504,6 +1504,12 @@ int32_t addExprAndResultField(SQueryInfo* pQueryInfo, int32_t colIdx, tSQLExprIt
     }
     case TK_SUM:
     case TK_AVG:
+    case TK_RATE:
+    case TK_IRATE:
+    case TK_SUM_RATE:
+    case TK_SUM_IRATE:
+    case TK_AVG_RATE:
+    case TK_AVG_IRATE:
     case TK_TWA:
     case TK_MIN:
     case TK_MAX:
@@ -1956,6 +1962,24 @@ int32_t changeFunctionID(int32_t optr, int16_t* functionId) {
     case TK_AVG:
       *functionId = TSDB_FUNC_AVG;
       break;
+    case TK_RATE:
+      *functionId = TSDB_FUNC_RATE;
+      break;
+    case TK_IRATE:
+      *functionId = TSDB_FUNC_IRATE;
+      break;
+    case TK_SUM_RATE:
+      *functionId = TSDB_FUNC_SUM_RATE;
+      break;
+    case TK_SUM_IRATE:
+      *functionId = TSDB_FUNC_SUM_IRATE;
+      break;
+    case TK_AVG_RATE:
+      *functionId = TSDB_FUNC_AVG_RATE;
+      break;
+    case TK_AVG_IRATE:
+      *functionId = TSDB_FUNC_AVG_IRATE;
+      break;
     case TK_MIN:
       *functionId = TSDB_FUNC_MIN;
       break;
@@ -2149,7 +2173,8 @@ int32_t tscTansformSQLFunctionForSTableQuery(SQueryInfo* pQueryInfo) {
     int16_t functionId = aAggs[pExpr->functionId].stableFuncId;
 
     if ((functionId >= TSDB_FUNC_SUM && functionId <= TSDB_FUNC_TWA) ||
-        (functionId >= TSDB_FUNC_FIRST_DST && functionId <= TSDB_FUNC_LAST_DST)) {
+        (functionId >= TSDB_FUNC_FIRST_DST && functionId <= TSDB_FUNC_LAST_DST) ||
+        (functionId >= TSDB_FUNC_RATE && functionId <= TSDB_FUNC_AVG_IRATE)) {
       if (getResultDataInfo(pField->type, pField->bytes, functionId, pExpr->param[0].i64Key, &type, &bytes,
                             &intermediateBytes, 0, true) != TSDB_CODE_SUCCESS) {
         return TSDB_CODE_INVALID_SQL;
@@ -2912,7 +2937,7 @@ static int32_t validateSQLExpr(tSQLExpr* pExpr, SQueryInfo* pQueryInfo, SColumnL
       pList->ids[pList->num++] = index;
   } else if (pExpr->nSQLOptr == TK_FLOAT && (isnan(pExpr->val.dKey) || isinf(pExpr->val.dKey))) {
     return TSDB_CODE_INVALID_SQL;
-  } else if (pExpr->nSQLOptr >= TK_MIN && pExpr->nSQLOptr <= TK_LAST_ROW) {
+  } else if (pExpr->nSQLOptr >= TK_MIN && pExpr->nSQLOptr <= TK_AVG_IRATE) {
     return TSDB_CODE_INVALID_SQL;
   }
 
@@ -2966,8 +2991,8 @@ static bool isValidExpr(tSQLExpr* pLeft, tSQLExpr* pRight, int32_t optr) {
    *
    * However, columnA < 4+12 is valid
    */
-  if ((pLeft->nSQLOptr >= TK_COUNT && pLeft->nSQLOptr <= TK_LAST_ROW) ||
-      (pRight->nSQLOptr >= TK_COUNT && pRight->nSQLOptr <= TK_LAST_ROW) ||
+  if ((pLeft->nSQLOptr >= TK_COUNT && pLeft->nSQLOptr <= TK_AVG_IRATE) ||
+      (pRight->nSQLOptr >= TK_COUNT && pRight->nSQLOptr <= TK_AVG_IRATE) ||
       (pLeft->nSQLOptr >= TK_BOOL && pLeft->nSQLOptr <= TK_BINARY && pRight->nSQLOptr >= TK_BOOL &&
        pRight->nSQLOptr <= TK_BINARY)) {
     return false;

src/inc/tsqlfunction.h

@@ -60,6 +60,13 @@ extern "C" {
 #define TSDB_FUNC_LAST_DST     26
 #define TSDB_FUNC_INTERP       27
 
+#define TSDB_FUNC_RATE         28
+#define TSDB_FUNC_IRATE        29
+#define TSDB_FUNC_SUM_RATE     30
+#define TSDB_FUNC_SUM_IRATE    31
+#define TSDB_FUNC_AVG_RATE     32
+#define TSDB_FUNC_AVG_IRATE    33
+
 #define TSDB_FUNCSTATE_SO           0x1U    // single output
 #define TSDB_FUNCSTATE_MO           0x2U    // dynamic number of output, not multinumber of output e.g., TOP/BOTTOM
 #define TSDB_FUNCSTATE_STREAM       0x4U    // function avail for stream
@@ -287,10 +294,10 @@ typedef struct STwaInfo {
 } STwaInfo;
 
 /* global sql function array */
-extern struct SQLAggFuncElem aAggs[28];
+extern struct SQLAggFuncElem aAggs[];
 
 /* compatible check array list */
-extern int32_t funcCompatDefList[28];
+extern int32_t funcCompatDefList[];
 
 void getStatistics(char *priData, char *data, int32_t size, int32_t numOfRow, int32_t type, int64_t *min, int64_t *max,
                    int64_t *sum, int16_t *minIndex, int16_t *maxIndex, int32_t *numOfNull);

src/system/detail/inc/vnodeQueryImpl.h

@@ -126,6 +126,7 @@ static FORCE_INLINE SMeterObj* getMeterObj(void* hashHandle, int32_t sid) {
 bool isQueryKilled(SQuery* pQuery);
 bool isFixedOutputQuery(SQuery* pQuery);
 bool isPointInterpoQuery(SQuery* pQuery);
+bool isSumAvgRateQuery(SQuery *pQuery);
 bool isTopBottomQuery(SQuery* pQuery);
 bool isFirstLastRowQuery(SQuery* pQuery);
 bool isTSCompQuery(SQuery* pQuery);

src/system/detail/src/vnodeQueryImpl.c

@@ -2438,8 +2438,9 @@ void setExecParams(SQuery *pQuery, SQLFunctionCtx *pCtx, int64_t startQueryTimes
     // store the first&last timestamp into the intermediate buffer [1], the true
     // value may be null but timestamp will never be null
     pCtx->ptsList = (int64_t *)(primaryColumnData + startOffset * TSDB_KEYSIZE);
-  } else if (functionId == TSDB_FUNC_TOP || functionId == TSDB_FUNC_BOTTOM || functionId == TSDB_FUNC_TWA ||
-             functionId == TSDB_FUNC_DIFF) {
+  } else if (functionId == TSDB_FUNC_TOP      || functionId == TSDB_FUNC_BOTTOM ||
+             functionId == TSDB_FUNC_TWA      || functionId == TSDB_FUNC_DIFF ||
+             (functionId >= TSDB_FUNC_RATE    && functionId <= TSDB_FUNC_AVG_IRATE)) {
     /*
      * leastsquares function needs two columns of input, currently, the x value of linear equation is set to
      * timestamp column, and the y-value is the column specified in pQuery->pSelectExpr[i].colIdxInBuffer
@@ -2723,6 +2724,22 @@ bool isPointInterpoQuery(SQuery *pQuery) {
 }
 
 // TODO REFACTOR:MERGE WITH CLIENT-SIDE FUNCTION
+bool isSumAvgRateQuery(SQuery *pQuery) {
+  for (int32_t i = 0; i < pQuery->numOfOutputCols; ++i) {
+    int32_t functionId = pQuery->pSelectExpr[i].pBase.functionId;
+    if (functionId == TSDB_FUNC_TS) {
+      continue;
+    }
+
+    if (functionId == TSDB_FUNC_SUM_RATE || functionId == TSDB_FUNC_SUM_IRATE || 
+        functionId == TSDB_FUNC_AVG_RATE || functionId == TSDB_FUNC_AVG_IRATE) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
 bool isTopBottomQuery(SQuery *pQuery) {
   for (int32_t i = 0; i < pQuery->numOfOutputCols; ++i) {
     int32_t functionId = pQuery->pSelectExpr[i].pBase.functionId;
@@ -4584,7 +4601,7 @@ int32_t vnodeMultiMeterQueryPrepare(SQInfo *pQInfo, SQuery *pQuery, void *param)
     initSlidingWindowInfo(&pRuntimeEnv->swindowResInfo, 4096, type, pQuery->rowSize, pSupporter->pResult);
   }
 
-  if (pQuery->nAggTimeInterval != 0) {
+  if (pQuery->nAggTimeInterval != 0 || isSumAvgRateQuery(pQuery)) {
     // one page for each table at least
     ret = createResultBuf(&pRuntimeEnv->pResultBuf, pSupporter->numOfMeters, pQuery->rowSize);
     if (ret != TSDB_CODE_SUCCESS) {

src/system/detail/src/vnodeQueryProcess.c

@@ -398,7 +398,7 @@ static void queryOnMultiDataFiles(SQInfo *pQInfo, SMeterDataInfo *pMeterDataInfo
 
       restoreIntervalQueryRange(pRuntimeEnv, pMeterQueryInfo);
 
-      if (pQuery->nAggTimeInterval == 0) {  // normal query
+      if (pQuery->nAggTimeInterval == 0 && !isSumAvgRateQuery(pQuery)) {  // normal query
         if ((pQuery->lastKey > pQuery->ekey && QUERY_IS_ASC_QUERY(pQuery)) ||
             (pQuery->lastKey < pQuery->ekey && !QUERY_IS_ASC_QUERY(pQuery))) {
           qTrace(
@@ -964,7 +964,7 @@ static void vnodeMultiMeterQueryProcessor(SQInfo *pQInfo) {
     return;
   }
 
-  if (pQuery->nAggTimeInterval > 0) {
+  if (pQuery->nAggTimeInterval > 0  || isSumAvgRateQuery(pQuery)) {
     assert(pSupporter->subgroupIdx == 0 && pSupporter->numOfGroupResultPages == 0);
 
     if (mergeMetersResultToOneGroups(pSupporter) == TSDB_CODE_SUCCESS) {

src/util/src/ttokenizer.c

@@ -231,6 +231,7 @@ static SKeyword keywordTable[] = {
     {"RATE",         TK_RATE},
     {"IRATE",        TK_IRATE},
     {"SUM_RATE",     TK_SUM_RATE},
+    {"SUM_IRATE",    TK_SUM_IRATE},
     {"AVG_RATE",     TK_AVG_RATE},
     {"AVG_IRATE",    TK_AVG_IRATE},
 };