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ehn(query): improve the merge sort performance.

This commit is contained in:
Haojun Liao 2022-11-29 11:06:20 +08:00
parent 797af5373d
commit a1585f16f1
1 changed files with 6 additions and 1 deletions
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7
source/libs/executor/src/sortoperator.c
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@ -577,8 +577,13 @@ int32_t openMultiwayMergeOperator(SOperatorInfo* pOperator) {
tsortSetCompareGroupId(pInfo->pSortHandle, pInfo->groupSort);
for (int32_t i = 0; i < pOperator->numOfDownstream; ++i) {
SOperatorInfo* pDownstream = pOperator->pDownstream[i];
if (pDownstream->operatorType == QUERY_NODE_PHYSICAL_PLAN_EXCHANGE) {
pDownstream->fpSet._openFn(pDownstream);
}
SSortSource* ps = taosMemoryCalloc(1, sizeof(SSortSource));
ps->param = pOperator->pDownstream[i];
ps->param = pDownstream;
ps->onlyRef = true;
tsortAddSource(pInfo->pSortHandle, ps);