[TD-11216]<feature>: Time window related keywords

src/client/src/tscServer.c

@@ -965,6 +965,7 @@ int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   pQueryMsg->interval.intervalUnit = query.interval.intervalUnit;
   pQueryMsg->interval.slidingUnit  = query.interval.slidingUnit;
   pQueryMsg->interval.offsetUnit   = query.interval.offsetUnit;
+  pQueryMsg->interval.winFlag      = query.interval.winFlag;
 
   pQueryMsg->stableQuery      = query.stableQuery;
   pQueryMsg->topBotQuery      = query.topBotQuery;

src/inc/taosdef.h

@@ -277,6 +277,11 @@ do { \
 #define TSDB_MAX_REPLICA          5
 
 #define TSDB_TBNAME_COLUMN_INDEX          (-1)
+#define TSDB_TSWIN_START_COLUMN_INDEX     (-2)
+#define TSDB_TSWIN_STOP_COLUMN_INDEX      (-3)
+#define TSDB_TSWIN_DURATION_COLUMN_INDEX  (-4)
+#define TSDB_MIN_VALID_COLUMN_INDEX       (-4)
+
 #define TSDB_UD_COLUMN_INDEX            (-1000)
 #define TSDB_RES_COL_ID                 (-5000)
 
@@ -393,6 +398,10 @@ do { \
 #define TSDB_QUERY_TYPE_STMT_INSERT            0x800u    // stmt insert type
 #define TSDB_QUERY_TYPE_NEST_SUBQUERY          0x1000u   // nested sub query
 
+#define TSDB_TSWIN_START_FLAG                  0x01u
+#define TSDB_TSWIN_STOP_FLAG                   0x02u
+#define TSDB_TSWIN_DURATION_FLAG               0x04u
+
 #define TSDB_QUERY_HAS_TYPE(x, _type)          (((x) & (_type)) != 0)
 #define TSDB_QUERY_SET_TYPE(x, _type)          ((x) |= (_type))
 #define TSDB_QUERY_CLEAR_TYPE(x, _type)        ((x) &= (~_type))

src/os/inc/osTime.h

@@ -95,6 +95,7 @@ typedef struct SInterval {
   int64_t interval;
   int64_t sliding;
   int64_t offset;
+  uint8_t winFlag;
 } SInterval;
 
 typedef struct SSessionWindow {