fix(query): clean result block before loading new results.

a8d2e22a · Haojun Liao · 877c707c · a8d2e22a
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source/libs/executor/src/scanoperator.c source/libs/executor/src/scanoperator.c +1 -0

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--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -3089,6 +3089,7 @@ static SSDataBlock* doTagScan(SOperatorInfo* pOperator) {
  STagScanInfo* pInfo = pOperator->info;
  SExprInfo*    pExprInfo = &pOperator->exprSupp.pExprInfo[0];
  SSDataBlock*  pRes = pInfo->pRes;
+  blockDataCleanup(pRes);

  int32_t size = taosArrayGetSize(pInfo->pTableList->pTableList);
  if (size == 0) {