[td-2895] refactor.

src/query/src/qAggMain.c

@@ -4092,17 +4092,49 @@ static void interp_function_impl(SQLFunctionCtx *pCtx) {
     tVariantDump(&pCtx->param[1], pCtx->pOutput, pCtx->inputType, true);
   } else {
     if (pCtx->start.key != INT64_MIN && pCtx->start.key < pCtx->startTs && pCtx->end.key > pCtx->startTs) {
-      // the value of prev/next/linear interpolation is placed in pCtx->start
+      if (type == TSDB_FILL_PREV) {
         if (IS_NUMERIC_TYPE(pCtx->inputType) || pCtx->inputType == TSDB_DATA_TYPE_BOOL) {
           SET_TYPED_DATA(pCtx->pOutput, pCtx->inputType, pCtx->start.val);
         } else {
           assignVal(pCtx->pOutput, pCtx->start.ptr, pCtx->outputBytes, pCtx->inputType);
         }
+      } else if (type == TSDB_FILL_NEXT) {
+        if (IS_NUMERIC_TYPE(pCtx->inputType) || pCtx->inputType == TSDB_DATA_TYPE_BOOL) {
+          SET_TYPED_DATA(pCtx->pOutput, pCtx->inputType, pCtx->end.val);
+        } else {
+          assignVal(pCtx->pOutput, pCtx->end.ptr, pCtx->outputBytes, pCtx->inputType);
+        }
+      } else if (type == TSDB_FILL_LINEAR) {
+        SPoint point1 = {.key = pCtx->start.key, .val = &pCtx->start.val};
+        SPoint point2 = {.key = pCtx->end.key, .val = &pCtx->end.val};
+        SPoint point  = {.key = pCtx->startTs, .val = pCtx->pOutput};
+
+        int32_t srcType = pCtx->inputType;
+        if (IS_NUMERIC_TYPE(srcType)) {  // TODO should find the not null data?
+          if (isNull((char *)&pCtx->start.val, srcType) || isNull((char *)&pCtx->end.val, srcType)) {
+            setNull(pCtx->pOutput, srcType, pCtx->inputBytes);
+          } else {
+            taosGetLinearInterpolationVal(&point, pCtx->outputType, &point1, &point2, TSDB_DATA_TYPE_DOUBLE);
+          }
         } else {
+          setNull(pCtx->pOutput, srcType, pCtx->inputBytes);
+        }
+      }
+    } else {
+      // no data generated yet
+      if (pCtx->size == 1) {
+        return;
+      }
+
       // check the timestamp in input buffer
       TSKEY skey = GET_TS_DATA(pCtx, 0);
       TSKEY ekey = GET_TS_DATA(pCtx, 1);
 
+      // no data generated yet
+      if (!(skey < pCtx->startTs && ekey > pCtx->startTs)) {
+        return;
+      }
+
       assert(pCtx->start.key == INT64_MIN && skey < pCtx->startTs && ekey > pCtx->startTs);
 
       if (type == TSDB_FILL_PREV) {
@@ -4114,8 +4146,6 @@ static void interp_function_impl(SQLFunctionCtx *pCtx) {
         char *start = GET_INPUT_DATA(pCtx, 0);
         char *end = GET_INPUT_DATA(pCtx, 1);
 
-
-
         SPoint point1 = {.key = skey, .val = start};
         SPoint point2 = {.key = ekey, .val = end};
         SPoint point = {.key = pCtx->startTs, .val = pCtx->pOutput};

src/query/src/qExecutor.c

@@ -1894,8 +1894,7 @@ _clean:
   return TSDB_CODE_QRY_OUT_OF_MEMORY;
 }
 
-static void doFreeQueryHandle(SQInfo* pQInfo) {
-  SQueryRuntimeEnv* pRuntimeEnv = &pQInfo->runtimeEnv;
+static void doFreeQueryHandle(SQueryRuntimeEnv* pRuntimeEnv) {
   SQuery* pQuery = pRuntimeEnv->pQuery;
 
   tsdbCleanupQueryHandle(pRuntimeEnv->pQueryHandle);
@@ -1923,7 +1922,7 @@ static void teardownQueryRuntimeEnv(SQueryRuntimeEnv *pRuntimeEnv) {
   pRuntimeEnv->pFillInfo = taosDestroyFillInfo(pRuntimeEnv->pFillInfo);
 
   destroyResultBuf(pRuntimeEnv->pResultBuf);
-  doFreeQueryHandle(pQInfo);
+  doFreeQueryHandle(pRuntimeEnv);
 
   pRuntimeEnv->pTsBuf = tsBufDestroy(pRuntimeEnv->pTsBuf);