diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 668beeaffd2aaf895125534927963ebaef94271d..c69e1a487b2556d888639b1c646d641031f33a89 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -2661,7 +2661,7 @@ static int32_t setExprInfoForFunctions(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SS
     }
   } else if (f == TSDB_FUNC_INTERP) {
     int32_t t1 = pSchema->type;
-    if (!IS_NUMERIC_TYPE(t1)) {
+    if (!IS_NUMERIC_TYPE(t1) && (t1 != TSDB_DATA_TYPE_BOOL)) {
       invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
       return -1;
     }
@@ -6875,7 +6875,7 @@ int32_t validateFillNode(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SSqlNode* pSqlNo
   if ((!isTimeWindowQuery(pQueryInfo)) && (!pointInterp)) {
     return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg5);
   }
-  
+
   if (QUERY_IS_JOIN_QUERY(pQueryInfo->type) && (!pointInterp)) {
     return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg7);
   }
@@ -6891,9 +6891,9 @@ int32_t validateFillNode(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SSqlNode* pSqlNo
   if (pItem->pVar.nType != TSDB_DATA_TYPE_BINARY) {
     return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg2);
   }
-  
+
   size_t numOfFields = tscNumOfFields(pQueryInfo);
-  
+
   if (pQueryInfo->fillVal == NULL) {
     pQueryInfo->fillVal      = calloc(numOfFields, sizeof(int64_t));
     pQueryInfo->numOfFillVal = (int32_t)numOfFields;
@@ -6954,7 +6954,7 @@ int32_t validateFillNode(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SSqlNode* pSqlNo
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg4);
       }
     }
-    
+
     if ((num < numOfFields) || ((num - 1 < numOfFields) && pointInterp)) {
       tVariantListItem* lastItem = taosArrayGetLast(pFillToken);
 
@@ -6990,13 +6990,13 @@ int32_t validateRangeNode(SSqlObj* pSql, SQueryInfo* pQueryInfo, SSqlNode* pSqlN
   const char *msg0 = "invalid usage of range clause";
   const char* msg1 = "invalid timestamp in range";
   SSqlCmd* pCmd = &pSql->cmd;
-  
+
   bool interpQuery = tscIsPointInterpQuery(pQueryInfo);
 
   if ((!interpQuery) && (pSqlNode->pRange.start || pSqlNode->pRange.end)) {
     return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg0);
   }
-  
+
   if (pSqlNode->pRange.start == NULL || pSqlNode->pRange.end == NULL) {
     pQueryInfo->range.skey = INT64_MIN;
     pQueryInfo->range.ekey = INT64_MIN;
diff --git a/src/common/src/tvariant.c b/src/common/src/tvariant.c
index 13d67c5552098e948e27afa5f5d1be3aa0d7e718..a3544f49a1ddff83cd398fffa4913a9dc8f6348d 100644
--- a/src/common/src/tvariant.c
+++ b/src/common/src/tvariant.c
@@ -670,7 +670,7 @@ static int32_t convertToBool(tVariant *pVariant, int64_t *pDest) {
     if ((ret = convertToBoolImpl(pVariant->pz, pVariant->nLen)) < 0) {
       return ret;
     }
-    
+
     *pDest = ret;
   } else if (pVariant->nType == TSDB_DATA_TYPE_NCHAR) {
     int32_t ret = 0;
@@ -681,7 +681,7 @@ static int32_t convertToBool(tVariant *pVariant, int64_t *pDest) {
   } else if (pVariant->nType == TSDB_DATA_TYPE_NULL) {
     *pDest = TSDB_DATA_BOOL_NULL;
   }
-  
+
   assert(*pDest == TSDB_TRUE || *pDest == TSDB_FALSE || *pDest == TSDB_DATA_BOOL_NULL);
   return 0;
 }
@@ -702,7 +702,7 @@ int32_t tVariantDumpEx(tVariant *pVariant, char *payload, int16_t type, bool inc
   if (converted) {
     *converted = false;
   }
-  
+
   if (pVariant == NULL || (pVariant->nType != 0 && !isValidDataType(pVariant->nType))) {
     return -1;
   }
@@ -719,7 +719,7 @@ int32_t tVariantDumpEx(tVariant *pVariant, char *payload, int16_t type, bool inc
       *(int8_t *)payload = (int8_t)result;
       break;
     }
-    
+
     case TSDB_DATA_TYPE_TINYINT: {
       if (convertToInteger(pVariant, &result, type, true, false, converted) < 0) {
         SET_EXT_INFO(converted, result, INT8_MIN + 1, INT8_MAX, extInfo);
@@ -730,14 +730,14 @@ int32_t tVariantDumpEx(tVariant *pVariant, char *payload, int16_t type, bool inc
     }
 
     case TSDB_DATA_TYPE_UTINYINT: {
-      if (convertToInteger(pVariant, &result, type, false, false, converted) < 0) {        
+      if (convertToInteger(pVariant, &result, type, false, false, converted) < 0) {
         SET_EXT_INFO(converted, result, 0, UINT8_MAX - 1, extInfo);
         return -1;
       }
       *((uint8_t *)payload) = (uint8_t) result;
       break;
     }
-    
+
     case TSDB_DATA_TYPE_SMALLINT: {
       if (convertToInteger(pVariant, &result, type, true, false, converted) < 0) {
         SET_EXT_INFO(converted, result, INT16_MIN + 1, INT16_MAX, extInfo);
@@ -755,7 +755,7 @@ int32_t tVariantDumpEx(tVariant *pVariant, char *payload, int16_t type, bool inc
       *((uint16_t *)payload) = (uint16_t)result;
       break;
     }
-    
+
     case TSDB_DATA_TYPE_INT: {
       if (convertToInteger(pVariant, &result, type, true, false, converted) < 0) {
         SET_EXT_INFO(converted, result, INT32_MIN + 1, INT32_MAX, extInfo);
@@ -773,7 +773,7 @@ int32_t tVariantDumpEx(tVariant *pVariant, char *payload, int16_t type, bool inc
       *((uint32_t *)payload) = (uint32_t)result;
       break;
     }
-    
+
     case TSDB_DATA_TYPE_BIGINT: {
       if (convertToInteger(pVariant, &result, type, true, false, converted) < 0) {
         SET_EXT_INFO(converted, (int64_t)result, INT64_MIN + 1, INT64_MAX, extInfo);
diff --git a/tests/script/general/parser/interp_full_test1.sim b/tests/script/general/parser/interp_full_test1.sim
index 858d58768bd6c0ab78d6debf0e4208d375080ef8..d508b9350ef241293dafa495d9c42715065834fa 100644
--- a/tests/script/general/parser/interp_full_test1.sim
+++ b/tests/script/general/parser/interp_full_test1.sim
@@ -3,7 +3,6 @@ sql connect
 
 sql use db;
 
-sql_error SELECT INTERP(c7) FROM tb1;
 sql_error SELECT INTERP(c8) FROM tb1;
 sql_error SELECT INTERP(c9) FROM tb1;
 sql_error SELECT INTERP(c1,c8) FROM tb1;
diff --git a/tests/script/general/parser/interp_full_test2.sim b/tests/script/general/parser/interp_full_test2.sim
index e044ef572bbb97d7d71ec96821e8f0e65b21389e..66bbf0ec973c28cba0299a7e441791b58ad46c37 100644
--- a/tests/script/general/parser/interp_full_test2.sim
+++ b/tests/script/general/parser/interp_full_test2.sim
@@ -2358,3 +2358,789 @@ endi
 if $data96 != tb2 then
   return -1
 endi
+
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(NULL);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+print $data01
+print $data11
+print $data21
+print $data31
+print $data41
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != NULL then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != NULL then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != NULL then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != NULL then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != NULL then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(PREV);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != 1 then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != 1 then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != 0 then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != 0 then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != 0 then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != 0 then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(NEXT);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != 1 then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != 0 then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != 0 then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != 1 then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != 1 then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != 1 then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(VALUE, 1);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != 1 then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != 1 then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != 1 then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != 1 then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != 1 then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != 1 then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(VALUE, 1.5);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != 1 then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != 1 then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != 1 then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != 1 then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != 1 then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != 1 then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(VALUE, 1);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != 1 then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != 1 then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != 1 then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != 1 then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != 1 then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != 1 then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(VALUE, 0);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != 0 then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != 0 then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != 0 then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != 0 then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != 0 then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != 0 then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(VALUE, 0.0);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != 0 then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != 0 then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != 0 then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != 0 then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != 0 then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != 0 then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(VALUE, 0);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != 0 then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != 0 then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != 0 then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != 0 then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != 0 then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != 0 then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(VALUE, 'abc');
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != 0 then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != 0 then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != 0 then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != 0 then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != 0 then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != 0 then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(VALUE, NULL);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != NULL then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != NULL then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != NULL then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != NULL then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != NULL then
+  return -1
+endi
+
+sql SELECT INTERP(c7) FROM tb2 RANGE('2021-10-20 10:00:00','2021-10-20 10:00:14') EVERY(1s) FILL(LINEAR);
+if $rows != 15 then
+  return -1
+endi
+if $data00 != @21-10-20 10:00:00.000@ then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != @21-10-20 10:00:01.000@ then
+  return -1
+endi
+if $data11 != 1 then
+  return -1
+endi
+if $data20 != @21-10-20 10:00:02.000@ then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != @21-10-20 10:00:03.000@ then
+  return -1
+endi
+if $data31 != 0 then
+  return -1
+endi
+if $data40 != @21-10-20 10:00:04.000@ then
+  return -1
+endi
+if $data41 != 0 then
+  return -1
+endi
+if $data50 != @21-10-20 10:00:05.000@ then
+  return -1
+endi
+if $data51 != 0 then
+  return -1
+endi
+if $data60 != @21-10-20 10:00:06.000@ then
+  return -1
+endi
+if $data61 != 0 then
+  return -1
+endi
+if $data70 != @21-10-20 10:00:07.000@ then
+  return -1
+endi
+if $data71 != 0 then
+  return -1
+endi
+if $data80 != @21-10-20 10:00:08.000@ then
+  return -1
+endi
+if $data81 != 0 then
+  return -1
+endi
+if $data90 != @21-10-20 10:00:09.000@ then
+  return -1
+endi
+if $data91 != 0 then
+  return -1
+endi