feat(query): add _isfilled pseudocolumn to indicate data is origin

or filled.

include/common/ttypes.h

@@ -266,6 +266,7 @@ typedef struct {
 #define IS_FLOAT_TYPE(_t)            ((_t) == TSDB_DATA_TYPE_FLOAT || (_t) == TSDB_DATA_TYPE_DOUBLE)
 #define IS_INTEGER_TYPE(_t)          ((IS_SIGNED_NUMERIC_TYPE(_t)) || (IS_UNSIGNED_NUMERIC_TYPE(_t)))
 #define IS_TIMESTAMP_TYPE(_t)        ((_t) == TSDB_DATA_TYPE_TIMESTAMP)
+#define IS_BOOLEAN_TYPE(_t)          ((_t) == TSDB_DATA_TYPE_BOOL)
 
 #define IS_NUMERIC_TYPE(_t) ((IS_SIGNED_NUMERIC_TYPE(_t)) || (IS_UNSIGNED_NUMERIC_TYPE(_t)) || (IS_FLOAT_TYPE(_t)))
 #define IS_MATHABLE_TYPE(_t) \

source/libs/executor/src/timesliceoperator.c

@@ -163,6 +163,10 @@ static bool genInterpolationResult(STimeSliceOperatorInfo* pSliceInfo, SExprSupp
     if (IS_TIMESTAMP_TYPE(pExprInfo->base.resSchema.type)) {
       colDataAppend(pDst, rows, (char*)&pSliceInfo->current, false);
       continue;
+    } else if (IS_BOOLEAN_TYPE(pExprInfo->base.resSchema.type)) {
+      bool isFilled = true;
+      colDataAppend(pDst, pResBlock->info.rows, (char*)&isFilled, false);
+      continue;
     }
 
     int32_t srcSlot = pExprInfo->base.pParam[0].pCol->slotId;
@@ -274,6 +278,9 @@ static void addCurrentRowToResult(STimeSliceOperatorInfo* pSliceInfo, SExprSupp*
 
     if (IS_TIMESTAMP_TYPE(pExprInfo->base.resSchema.type)) {
       colDataAppend(pDst, pResBlock->info.rows, (char*)&pSliceInfo->current, false);
+    } else if (IS_BOOLEAN_TYPE(pExprInfo->base.resSchema.type)) {
+      bool isFilled = false;
+      colDataAppend(pDst, pResBlock->info.rows, (char*)&isFilled, false);
     } else {
       int32_t          srcSlot = pExprInfo->base.pParam[0].pCol->slotId;
       SColumnInfoData* pSrc = taosArrayGet(pSrcBlock->pDataBlock, srcSlot);