diff --git a/src/client/src/tscSQLParserImpl.c b/src/client/src/tscSQLParserImpl.c
index 17e1c6f45790acc36c35111aec75e00be227044f..52a68a9a16670a6cacd7ac01b36503a629b849f3 100644
--- a/src/client/src/tscSQLParserImpl.c
+++ b/src/client/src/tscSQLParserImpl.c
@@ -446,6 +446,8 @@ int32_t getTimestampInUsFromStrImpl(int64_t val, char unit, int64_t *result) {
       break;
     case 'a':
       break;
+    case 'u':
+      return 0;
     default: {
       ;
       return -1;
diff --git a/src/client/src/tscStream.c b/src/client/src/tscStream.c
index 94fb35d52231746da27d21a755cad823c806321f..59e2f4f85c4c8cffff1dcc85ff2469d9d523eb20 100644
--- a/src/client/src/tscStream.c
+++ b/src/client/src/tscStream.c
@@ -374,8 +374,7 @@ static void tscSetNextLaunchTimer(SSqlStream *pStream, SSqlObj *pSql) {
 }
 
 static void tscSetSlidingWindowInfo(SSqlObj *pSql, SSqlStream *pStream) {
-  int64_t minIntervalTime =
-      (pStream->precision == TSDB_TIME_PRECISION_MICRO) ? tsMinIntervalTime * 1000L : tsMinIntervalTime;
+  int64_t minIntervalTime = tsMinIntervalTime;
   
   SQueryInfo* pQueryInfo = tscGetQueryInfoDetail(&pSql->cmd, 0);
   
@@ -391,8 +390,7 @@ static void tscSetSlidingWindowInfo(SSqlObj *pSql, SSqlStream *pStream) {
     pQueryInfo->slidingTime = pQueryInfo->intervalTime;
   }
 
-  int64_t minSlidingTime =
-      (pStream->precision == TSDB_TIME_PRECISION_MICRO) ? tsMinSlidingTime * 1000L : tsMinSlidingTime;
+  int64_t minSlidingTime = tsMinSlidingTime;
 
   if (pQueryInfo->slidingTime == -1) {
     pQueryInfo->slidingTime = pQueryInfo->intervalTime;
diff --git a/src/modules/http/src/restHandle.c b/src/modules/http/src/restHandle.c
index a3077008661590e9813b6f3ec91b6c15d9e42902..57e34affedca06641adea94708f1017b03f1671a 100644
--- a/src/modules/http/src/restHandle.c
+++ b/src/modules/http/src/restHandle.c
@@ -68,9 +68,7 @@ bool restProcessSqlRequest(HttpContext* pContext, int timestampFmt) {
   }
 
 
-  /*
-   * for async test
-   * /
+  // for async test
   /*
   if (httpCheckUsedbSql(sql)) {
     httpSendErrorResp(pContext, HTTP_NO_EXEC_USEDB);
diff --git a/src/sdb/src/sdbEngine.c b/src/sdb/src/sdbEngine.c
index 09576ab687eaedc2aa248655e9708260543ff2ea..2bdc64cdecd14f7951f2385a751999a71cd94770 100644
--- a/src/sdb/src/sdbEngine.c
+++ b/src/sdb/src/sdbEngine.c
@@ -310,7 +310,7 @@ void *sdbOpenTable(int maxRows, int32_t maxRowSize, char *name, char keyType, ch
   pTable->appTool = appTool;
   sprintf(pTable->fn, "%s/%s.db", directory, pTable->name);
 
-  if (sdbInitIndexFp[keyType] != NULL) pTable->iHandle = (*sdbInitIndexFp[keyType])(maxRows, sizeof(SRowMeta));
+  if (sdbInitIndexFp[(int)keyType] != NULL) pTable->iHandle = (*sdbInitIndexFp[(int)keyType])(maxRows, sizeof(SRowMeta));
 
   pthread_mutex_init(&pTable->mutex, NULL);
 
diff --git a/src/system/detail/src/vnodeQueryImpl.c b/src/system/detail/src/vnodeQueryImpl.c
index e02af78e2470a5233aa19921af6ff76f3849687a..e69b5a5b8cf0cc49ada67f44ec5d4eb17b7eff57 100644
--- a/src/system/detail/src/vnodeQueryImpl.c
+++ b/src/system/detail/src/vnodeQueryImpl.c
@@ -2665,7 +2665,7 @@ static int32_t rowwiseApplyAllFunctions(SQueryRuntimeEnv *pRuntimeEnv, int32_t *
   int32_t j = 0;
   TSKEY   lastKey = -1;
   int32_t lastIndex = -1;
-  bool firstAccessedPoint = true;
+  //bool firstAccessedPoint = true;
   
   for (j = 0; j < (*forwardStep); ++j) {
     int32_t offset = GET_COL_DATA_POS(pQuery, j, step);
diff --git a/src/util/src/tglobalcfg.c b/src/util/src/tglobalcfg.c
index 45efcad56394b1507c60d383a60199d0b96afb02..400bce32e755c0ab683ee0d54c1151219515c7b3 100644
--- a/src/util/src/tglobalcfg.c
+++ b/src/util/src/tglobalcfg.c
@@ -155,11 +155,11 @@ char tsSocketType[4] = "udp";
 // time precision, millisecond by default
 int tsTimePrecision = TSDB_TIME_PRECISION_MILLI;
 
-// 10 ms for sliding time, the value will changed in case of time precision changed
-int tsMinSlidingTime = 10;
+// 1 us for sliding time, the value will changed in case of time precision changed
+int tsMinSlidingTime = 1;
 
-// 10 ms for interval time range, changed accordingly
-int tsMinIntervalTime = 10;
+// 1 us for interval time range, changed accordingly
+int tsMinIntervalTime = 1;
 
 // 20sec, the maximum value of stream computing delay, changed accordingly
 int tsMaxStreamComputDelay = 20000;
@@ -631,10 +631,10 @@ static void doInitGlobalConfig() {
 
   tsInitConfigOption(cfg++, "minSlidingTime", &tsMinSlidingTime, TSDB_CFG_VTYPE_INT,
                      TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW,
-                     10, 1000000, 0, TSDB_CFG_UTYPE_MS);
+                     1, 1000000000, 0, TSDB_CFG_UTYPE_MS);
   tsInitConfigOption(cfg++, "minIntervalTime", &tsMinIntervalTime, TSDB_CFG_VTYPE_INT,
                      TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW,
-                     10, 1000000, 0, TSDB_CFG_UTYPE_MS);
+                     1, 1000000000, 0, TSDB_CFG_UTYPE_MS);
   tsInitConfigOption(cfg++, "maxStreamCompDelay", &tsMaxStreamComputDelay, TSDB_CFG_VTYPE_INT,
                      TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW,
                      10, 1000000000, 0, TSDB_CFG_UTYPE_MS);
diff --git a/src/util/src/tinterpolation.c b/src/util/src/tinterpolation.c
index 5c0b867208db595ad533406ce320c7940495c669..d86f3e44c5a8182ae2c635a6432f29d7f5137048 100644
--- a/src/util/src/tinterpolation.c
+++ b/src/util/src/tinterpolation.c
@@ -27,7 +27,7 @@ int64_t taosGetIntervalStartTimestamp(int64_t startTime, int64_t timeRange, char
     return startTime;
   }
 
-  if (slidingTimeUnit == 'a' || slidingTimeUnit == 'm' || slidingTimeUnit == 's' || slidingTimeUnit == 'h') {
+  if (slidingTimeUnit == 'a' || slidingTimeUnit == 'm' || slidingTimeUnit == 's' || slidingTimeUnit == 'h' || slidingTimeUnit == 'u') {
     return (startTime / timeRange) * timeRange;
   } else {
     /*
diff --git a/src/util/src/ttime.c b/src/util/src/ttime.c
index 5d5b580a89fdc58025bf8a244e76cc00ab843b15..2656c6deb0461b1bcc794d6cd8698842c8c07386 100644
--- a/src/util/src/ttime.c
+++ b/src/util/src/ttime.c
@@ -378,6 +378,8 @@ static int32_t getTimestampInUsFromStrImpl(int64_t val, char unit, int64_t* resu
       break;
     case 'a':
       break;
+    case 'u':
+      return 0;
     default: {
       ;
       return -1;
diff --git a/src/util/src/ttokenizer.c b/src/util/src/ttokenizer.c
index 7cbb4552b410536176f5e69d9ee9336af197d94f..7cef1f709471de07c0725f80433e4bba2bd2cdde 100644
--- a/src/util/src/ttokenizer.c
+++ b/src/util/src/ttokenizer.c
@@ -510,7 +510,7 @@ uint32_t tSQLGetToken(char* z, uint32_t* tokenType) {
       /* here is the 1a/2s/3m/9y */
       if ((z[i] == 'a' || z[i] == 's' || z[i] == 'm' || z[i] == 'h' || z[i] == 'd' || z[i] == 'n' || z[i] == 'y' ||
           z[i] == 'w' || z[i] == 'A' || z[i] == 'S' || z[i] == 'M' || z[i] == 'H' || z[i] == 'D' || z[i] == 'N' ||
-          z[i] == 'Y' || z[i] == 'W') &&
+          z[i] == 'Y' || z[i] == 'W' || z[i] == 'u' || z[i] == 'U') &&
           (isIdChar[(uint8_t)z[i + 1]] == 0)) {
         *tokenType = TK_VARIABLE;
         i += 1;