refactor: do some internal refactor.

source/common/src/ttime.c

@@ -338,7 +338,7 @@ int32_t parseLocaltime(char* timestr, int32_t len, int64_t* time, int32_t timePr
   struct tm tm = {0};
 
   char* str = taosStrpTime(timestr, "%Y-%m-%d %H:%M:%S", &tm);
-  if (str == NULL || ((str - timestr) < len) || !validateTm(&tm)) {
+  if (str == NULL || (((str - timestr) < len) && (*str != '.')) || !validateTm(&tm)) {
     return -1;
   }
 
@@ -373,7 +373,7 @@ int32_t parseLocaltimeDst(char* timestr, int32_t len, int64_t* time, int32_t tim
   tm.tm_isdst = -1;
 
   char* str = taosStrpTime(timestr, "%Y-%m-%d %H:%M:%S", &tm);
-  if (str == NULL || ((str - timestr) < len) || !validateTm(&tm)) {
+  if (str == NULL || (((str - timestr) < len) && (*str != '.')) || !validateTm(&tm)) {
     return -1;
   }
 

source/libs/function/src/builtinsimpl.c

@@ -4201,13 +4201,13 @@ int32_t sampleFunction(SqlFunctionCtx* pCtx) {
     doReservoirSample(pInfo, data, tsList[i], i);
   }
 
-  for (int32_t i = alreadySampled; i < pInfo->numSampled; ++i) {
+  for (int32_t i = 0; i < pInfo->numSampled; ++i) {
     int32_t pos = startOffset + i;
     colDataAppend(pOutput, pos, pInfo->data + i * pInfo->colBytes, false);
     //TODO: handle ts output
   }
 
-  return pInfo->numSampled - alreadySampled;
+  return pInfo->numSampled;
 }
 
 bool getTailFuncEnv(SFunctionNode* pFunc, SFuncExecEnv* pEnv) {