Merge pull request #17115 from taosdata/feat/TD-18842

feat(query): interp support return timestamp with pseudo column _irowts

docs/en/12-taos-sql/10-function.md

@@ -867,6 +867,7 @@ INTERP(expr)
 - The number of rows in the result set of `INTERP` is determined by the parameter `EVERY`. Starting from timestamp1, one interpolation is performed for every time interval specified `EVERY` parameter.
 - Interpolation is performed based on `FILL` parameter.
 - `INTERP` can only be used to interpolate in single timeline. So it must be used with `partition by tbname` when it's used on a STable.
+- Pseudo column `_irowts` can be used along with `INTERP` to return the timestamps associated with interpolation points(support after version 3.0.1.4).
 
 ### LAST
 

docs/zh/12-taos-sql/10-function.md

@@ -868,6 +868,7 @@ INTERP(expr)
 - INTERP 根据 EVERY 字段来确定输出时间范围内的结果条数，即从 timestamp1 开始每隔固定长度的时间（EVERY 值）进行插值。如果没有指定 EVERY，则默认窗口大小为无穷大，即从 timestamp1 开始只有一个窗口。
 - INTERP 根据 FILL 字段来决定在每个符合输出条件的时刻如何进行插值。
 - INTERP 只能在一个时间序列内进行插值，因此当作用于超级表时必须跟 partition by tbname 一起使用。
+- INTERP 可以与伪列 _irowts 一起使用，返回插值点所对应的时间戳(3.0.1.4版本以后支持)。
 
 ### LAST
 

source/libs/executor/src/timewindowoperator.c

@@ -2099,12 +2099,17 @@ static void genInterpolationResult(STimeSliceOperatorInfo* pSliceInfo, SExprSupp
   bool hasInterp = true;
   for (int32_t j = 0; j < pExprSup->numOfExprs; ++j) {
     SExprInfo* pExprInfo = &pExprSup->pExprInfo[j];
-    int32_t    srcSlot = pExprInfo->base.pParam[0].pCol->slotId;
-    int32_t    dstSlot = pExprInfo->base.resSchema.slotId;
 
-    // SColumnInfoData* pSrc = taosArrayGet(pBlock->pDataBlock, srcSlot);
+    int32_t dstSlot = pExprInfo->base.resSchema.slotId;
     SColumnInfoData* pDst = taosArrayGet(pResBlock->pDataBlock, dstSlot);
 
+    if (IS_TIMESTAMP_TYPE(pExprInfo->base.resSchema.type)) {
+      colDataAppend(pDst, rows, (char*)&pSliceInfo->current, false);
+      continue;
+    }
+
+    int32_t srcSlot = pExprInfo->base.pParam[0].pCol->slotId;
+    // SColumnInfoData* pSrc = taosArrayGet(pBlock->pDataBlock, srcSlot);
     switch (pSliceInfo->fillType) {
       case TSDB_FILL_NULL: {
         colDataAppendNULL(pDst, rows);
@@ -2350,19 +2355,24 @@ static SSDataBlock* doTimeslice(SOperatorInfo* pOperator) {
       if (ts == pSliceInfo->current) {
         for (int32_t j = 0; j < pOperator->exprSupp.numOfExprs; ++j) {
           SExprInfo* pExprInfo = &pOperator->exprSupp.pExprInfo[j];
-          int32_t    dstSlot = pExprInfo->base.resSchema.slotId;
-          int32_t    srcSlot = pExprInfo->base.pParam[0].pCol->slotId;
 
-          SColumnInfoData* pSrc = taosArrayGet(pBlock->pDataBlock, srcSlot);
+          int32_t dstSlot = pExprInfo->base.resSchema.slotId;
           SColumnInfoData* pDst = taosArrayGet(pResBlock->pDataBlock, dstSlot);
 
-          if (colDataIsNull_s(pSrc, i)) {
+          if (IS_TIMESTAMP_TYPE(pExprInfo->base.resSchema.type)) {
-            colDataAppendNULL(pDst, pResBlock->info.rows);
+            colDataAppend(pDst, pResBlock->info.rows, (char *)&pSliceInfo->current, false);
-            continue;
+          } else {
-          }
+            int32_t srcSlot = pExprInfo->base.pParam[0].pCol->slotId;
+            SColumnInfoData* pSrc = taosArrayGet(pBlock->pDataBlock, srcSlot);
 
-          char* v = colDataGetData(pSrc, i);
+            if (colDataIsNull_s(pSrc, i)) {
-          colDataAppend(pDst, pResBlock->info.rows, v, false);
+              colDataAppendNULL(pDst, pResBlock->info.rows);
+              continue;
+            }
+
+            char* v = colDataGetData(pSrc, i);
+            colDataAppend(pDst, pResBlock->info.rows, v, false);
+          }
         }
 
         pResBlock->info.rows += 1;
@@ -2482,14 +2492,24 @@ static SSDataBlock* doTimeslice(SOperatorInfo* pOperator) {
         if (ts == pSliceInfo->current && pSliceInfo->current <= pSliceInfo->win.ekey) {
           for (int32_t j = 0; j < pOperator->exprSupp.numOfExprs; ++j) {
             SExprInfo* pExprInfo = &pOperator->exprSupp.pExprInfo[j];
-            int32_t    dstSlot = pExprInfo->base.resSchema.slotId;
-            int32_t    srcSlot = pExprInfo->base.pParam[0].pCol->slotId;
 
-            SColumnInfoData* pSrc = taosArrayGet(pBlock->pDataBlock, srcSlot);
+            int32_t dstSlot = pExprInfo->base.resSchema.slotId;
             SColumnInfoData* pDst = taosArrayGet(pResBlock->pDataBlock, dstSlot);
 
-            char* v = colDataGetData(pSrc, i);
+            if (IS_TIMESTAMP_TYPE(pExprInfo->base.resSchema.type)) {
-            colDataAppend(pDst, pResBlock->info.rows, v, false);
+              colDataAppend(pDst, pResBlock->info.rows, (char *)&pSliceInfo->current, false);
+            } else {
+              int32_t srcSlot = pExprInfo->base.pParam[0].pCol->slotId;
+              SColumnInfoData* pSrc = taosArrayGet(pBlock->pDataBlock, srcSlot);
+
+              if (colDataIsNull_s(pSrc, i)) {
+                colDataAppendNULL(pDst, pResBlock->info.rows);
+                continue;
+              }
+
+              char* v = colDataGetData(pSrc, i);
+              colDataAppend(pDst, pResBlock->info.rows, v, false);
+            }
           }
 
           pResBlock->info.rows += 1;

tests/system-test/2-query/interp.py

@@ -356,8 +356,261 @@ class TDTestCase:
         tdSql.query(f"select interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:16', '2020-02-01 00:00:19') every(1s) fill(linear)")
         tdSql.checkRows(0)
 
+        tdLog.printNoPrefix("==========step8:test _irowts with interp")
 
-        tdLog.printNoPrefix("==========step8:test intra block interpolation")
+        # fill null
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:08', '2020-02-01 00:00:12') every(500a) fill(null)")
+        tdSql.checkRows(9)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:08.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:08.500')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:09.500')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:10.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:10.500')
+        tdSql.checkData(6, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(7, 0, '2020-02-01 00:00:11.500')
+        tdSql.checkData(8, 0, '2020-02-01 00:00:12.000')
+
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:04', '2020-02-01 00:00:16') every(1s) fill(null)")
+        tdSql.checkRows(13)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:04.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:05.000')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:06.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:07.000')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:08.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(6, 0, '2020-02-01 00:00:10.000')
+        tdSql.checkData(7, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(8, 0, '2020-02-01 00:00:12.000')
+        tdSql.checkData(9, 0, '2020-02-01 00:00:13.000')
+        tdSql.checkData(10, 0, '2020-02-01 00:00:14.000')
+        tdSql.checkData(11, 0, '2020-02-01 00:00:15.000')
+        tdSql.checkData(12, 0, '2020-02-01 00:00:16.000')
+
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:05', '2020-02-01 00:00:15') every(2s) fill(null)")
+        tdSql.checkRows(6)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:05.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:07.000')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:13.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:15.000')
+
+        # fill value
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:08', '2020-02-01 00:00:12') every(500a) fill(value, 1)")
+        tdSql.checkRows(9)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:08.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:08.500')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:09.500')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:10.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:10.500')
+        tdSql.checkData(6, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(7, 0, '2020-02-01 00:00:11.500')
+        tdSql.checkData(8, 0, '2020-02-01 00:00:12.000')
+
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:04', '2020-02-01 00:00:16') every(1s) fill(value, 1)")
+        tdSql.checkRows(13)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:04.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:05.000')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:06.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:07.000')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:08.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(6, 0, '2020-02-01 00:00:10.000')
+        tdSql.checkData(7, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(8, 0, '2020-02-01 00:00:12.000')
+        tdSql.checkData(9, 0, '2020-02-01 00:00:13.000')
+        tdSql.checkData(10, 0, '2020-02-01 00:00:14.000')
+        tdSql.checkData(11, 0, '2020-02-01 00:00:15.000')
+        tdSql.checkData(12, 0, '2020-02-01 00:00:16.000')
+
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:05', '2020-02-01 00:00:15') every(2s) fill(value, 1)")
+        tdSql.checkRows(6)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:05.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:07.000')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:13.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:15.000')
+
+        # fill prev
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:08', '2020-02-01 00:00:12') every(500a) fill(prev)")
+        tdSql.checkRows(9)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:08.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:08.500')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:09.500')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:10.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:10.500')
+        tdSql.checkData(6, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(7, 0, '2020-02-01 00:00:11.500')
+        tdSql.checkData(8, 0, '2020-02-01 00:00:12.000')
+
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:04', '2020-02-01 00:00:16') every(1s) fill(prev)")
+        tdSql.checkRows(12)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:05.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:06.000')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:07.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:08.000')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:10.000')
+        tdSql.checkData(6, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(7, 0, '2020-02-01 00:00:12.000')
+        tdSql.checkData(8, 0, '2020-02-01 00:00:13.000')
+        tdSql.checkData(9, 0, '2020-02-01 00:00:14.000')
+        tdSql.checkData(10, 0, '2020-02-01 00:00:15.000')
+        tdSql.checkData(11, 0, '2020-02-01 00:00:16.000')
+
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:05', '2020-02-01 00:00:15') every(2s) fill(prev)")
+        tdSql.checkRows(6)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:05.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:07.000')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:13.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:15.000')
+
+        # fill next
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:08', '2020-02-01 00:00:12') every(500a) fill(next)")
+        tdSql.checkRows(9)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:08.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:08.500')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:09.500')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:10.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:10.500')
+        tdSql.checkData(6, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(7, 0, '2020-02-01 00:00:11.500')
+        tdSql.checkData(8, 0, '2020-02-01 00:00:12.000')
+
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:04', '2020-02-01 00:00:16') every(1s) fill(next)")
+        tdSql.checkRows(12)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:04.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:05.000')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:06.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:07.000')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:08.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(6, 0, '2020-02-01 00:00:10.000')
+        tdSql.checkData(7, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(8, 0, '2020-02-01 00:00:12.000')
+        tdSql.checkData(9, 0, '2020-02-01 00:00:13.000')
+        tdSql.checkData(10, 0, '2020-02-01 00:00:14.000')
+        tdSql.checkData(11, 0, '2020-02-01 00:00:15.000')
+
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:05', '2020-02-01 00:00:15') every(2s) fill(next)")
+        tdSql.checkRows(6)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:05.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:07.000')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:13.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:15.000')
+
+        # fill linear
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:08', '2020-02-01 00:00:12') every(500a) fill(linear)")
+        tdSql.checkRows(9)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:08.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:08.500')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:09.500')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:10.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:10.500')
+        tdSql.checkData(6, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(7, 0, '2020-02-01 00:00:11.500')
+        tdSql.checkData(8, 0, '2020-02-01 00:00:12.000')
+
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:04', '2020-02-01 00:00:16') every(1s) fill(linear)")
+        tdSql.checkRows(11)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:05.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:06.000')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:07.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:08.000')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:10.000')
+        tdSql.checkData(6, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(7, 0, '2020-02-01 00:00:12.000')
+        tdSql.checkData(8, 0, '2020-02-01 00:00:13.000')
+        tdSql.checkData(9, 0, '2020-02-01 00:00:14.000')
+        tdSql.checkData(10, 0, '2020-02-01 00:00:15.000')
+
+        tdSql.query(f"select _irowts,interp(c0) from {dbname}.{tbname} range('2020-02-01 00:00:05', '2020-02-01 00:00:15') every(2s) fill(linear)")
+        tdSql.checkRows(6)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 0, '2020-02-01 00:00:05.000')
+        tdSql.checkData(1, 0, '2020-02-01 00:00:07.000')
+        tdSql.checkData(2, 0, '2020-02-01 00:00:09.000')
+        tdSql.checkData(3, 0, '2020-02-01 00:00:11.000')
+        tdSql.checkData(4, 0, '2020-02-01 00:00:13.000')
+        tdSql.checkData(5, 0, '2020-02-01 00:00:15.000')
+
+        # multiple _irowts
+        tdSql.query(f"select interp(c0),_irowts from {dbname}.{tbname} range('2020-02-01 00:00:04', '2020-02-01 00:00:16') every(1s) fill(linear)")
+        tdSql.checkRows(11)
+        tdSql.checkCols(2)
+
+        tdSql.checkData(0, 1, '2020-02-01 00:00:05.000')
+        tdSql.checkData(1, 1, '2020-02-01 00:00:06.000')
+        tdSql.checkData(2, 1, '2020-02-01 00:00:07.000')
+        tdSql.checkData(3, 1, '2020-02-01 00:00:08.000')
+        tdSql.checkData(4, 1, '2020-02-01 00:00:09.000')
+        tdSql.checkData(5, 1, '2020-02-01 00:00:10.000')
+        tdSql.checkData(6, 1, '2020-02-01 00:00:11.000')
+        tdSql.checkData(7, 1, '2020-02-01 00:00:12.000')
+        tdSql.checkData(8, 1, '2020-02-01 00:00:13.000')
+        tdSql.checkData(9, 1, '2020-02-01 00:00:14.000')
+        tdSql.checkData(10, 1, '2020-02-01 00:00:15.000')
+
+        tdSql.query(f"select _irowts, interp(c0), interp(c0), _irowts from {dbname}.{tbname} range('2020-02-01 00:00:04', '2020-02-01 00:00:16') every(1s) fill(linear)")
+        tdSql.checkRows(11)
+        tdSql.checkCols(4)
+
+        cols = (0, 3)
+        for i in cols:
+          tdSql.checkData(0, i, '2020-02-01 00:00:05.000')
+          tdSql.checkData(1, i, '2020-02-01 00:00:06.000')
+          tdSql.checkData(2, i, '2020-02-01 00:00:07.000')
+          tdSql.checkData(3, i, '2020-02-01 00:00:08.000')
+          tdSql.checkData(4, i, '2020-02-01 00:00:09.000')
+          tdSql.checkData(5, i, '2020-02-01 00:00:10.000')
+          tdSql.checkData(6, i, '2020-02-01 00:00:11.000')
+          tdSql.checkData(7, i, '2020-02-01 00:00:12.000')
+          tdSql.checkData(8, i, '2020-02-01 00:00:13.000')
+          tdSql.checkData(9, i, '2020-02-01 00:00:14.000')
+          tdSql.checkData(10, i, '2020-02-01 00:00:15.000')
+
+
+        tdLog.printNoPrefix("==========step9:test intra block interpolation")
         tdSql.execute(f"drop database {dbname}");
 
         tdSql.prepare()
@@ -551,7 +804,7 @@ class TDTestCase:
         tdSql.checkData(0, 0, 15)
         tdSql.checkData(1, 0, 15)
 
-        tdLog.printNoPrefix("==========step9:test multi-interp cases")
+        tdLog.printNoPrefix("==========step10:test multi-interp cases")
         tdSql.query(f"select interp(c0),interp(c1),interp(c2),interp(c3) from {dbname}.{tbname} range('2020-02-09 00:00:05', '2020-02-13 00:00:05') every(1d) fill(null)")
         tdSql.checkRows(5)
         tdSql.checkCols(4)
@@ -601,7 +854,7 @@ class TDTestCase:
         for i in range (tdSql.queryCols):
             tdSql.checkData(0, i, 13)
 
-        tdLog.printNoPrefix("==========step10:test error cases")
+        tdLog.printNoPrefix("==========step11:test error cases")
 
         tdSql.error(f"select interp(c0) from {dbname}.{tbname}")
         tdSql.error(f"select interp(c0) from {dbname}.{tbname} range('2020-02-10 00:00:05', '2020-02-15 00:00:05')")