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Code Issues

Fixed the sub-optimal plan reported by Vlad privately

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This commit is contained in:
Dmitry Yemanov 2020-03-13 20:38:09 +03:00
parent 24f974da1e
commit bf4e089271
1 changed files with 4 additions and 1 deletions
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5
src/jrd/RecordSourceNodes.cpp
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@ -2939,7 +2939,10 @@ void RseNode::pass1Source(thread_db* tdbb, CompilerScratch* csb, RseNode* rse,
// where we are just trying to inner join more than 2 streams. If possible,
// try to flatten the tree out before we go any further.
if (!rse->rse_jointype && !rse_jointype && !rse_sorted && !rse_projection &&
const auto isLateral = (this->flags & RseNode::FLAG_LATERAL) != 0;
if (!isLateral && !rse->rse_jointype && !rse_jointype &&
!rse_sorted && !rse_projection &&
!rse_first && !rse_skip && !rse_plan)
{
NestConst<RecordSourceNode>* arg = rse_relations.begin();