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feat(optimizer): add fixed bounds for TPC-H 1GB from regr

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This commit is contained in:
drrtuy
2025-06-27 13:45:41 +00:00
parent ca799dc709
commit 2776e193d1
1 changed files with 13 additions and 7 deletions
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20
dbcon/mysql/rulebased_optimizer.cpp
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@ -23,6 +23,8 @@
#include "predicateoperator.h"
#include "simplefilter.h"
#include "rulebased_optimizer.h"
#include <cstdint>
#include <limits>
namespace optimizer
{
@ -128,7 +130,8 @@ bool matchParallelCES(execplan::CalpontSelectExecutionPlan& csep)
// This routine produces a new ParseTree that is AND(lowerBand <= column, column <= upperBand)
// TODO add engine-independent statistics-derived ranges
execplan::ParseTree* filtersWithNewRangeAddedIfNeeded(execplan::SCSEP& csep)
execplan::ParseTree* filtersWithNewRangeAddedIfNeeded(execplan::SCSEP& csep,
std::pair<uint64_t, uint64_t>& bound)
{
// INV this is SimpleColumn we supply as an argument
// TODO find the suitable column using EI statistics.
@ -139,10 +142,11 @@ execplan::ParseTree* filtersWithNewRangeAddedIfNeeded(execplan::SCSEP& csep)
tableKeyColumnLeftOp->resultType(column->resultType());
// TODO Nobody owns this allocation and cleanup only depends on delete in ParseTree nodes' dtors.
auto* filterColLeftOp = new execplan::ConstantColumnUInt(42ULL, 0, 0);
auto* filterColLeftOp = new execplan::ConstantColumnUInt(bound.second, 0, 0);
// set TZ
// There is a question with ownership of the const column
execplan::SOP ltOp = boost::make_shared<execplan::Operator>(execplan::PredicateOperator("<="));
// WIP here we lost upper bound value if predicate is not changed to weak lt
execplan::SOP ltOp = boost::make_shared<execplan::Operator>(execplan::PredicateOperator("<"));
ltOp->setOpType(filterColLeftOp->resultType(), tableKeyColumnLeftOp->resultType());
ltOp->resultType(ltOp->operationType());
@ -151,7 +155,7 @@ execplan::ParseTree* filtersWithNewRangeAddedIfNeeded(execplan::SCSEP& csep)
auto tableKeyColumnRightOp = new execplan::SimpleColumn(*column);
tableKeyColumnRightOp->resultType(column->resultType());
// TODO hardcoded column type and value
auto* filterColRightOp = new execplan::ConstantColumnUInt(30ULL, 0, 0);
auto* filterColRightOp = new execplan::ConstantColumnUInt(bound.first, 0, 0);
execplan::SOP gtOp = boost::make_shared<execplan::Operator>(execplan::PredicateOperator(">="));
gtOp->setOpType(filterColRightOp->resultType(), tableKeyColumnRightOp->resultType());
@ -179,11 +183,13 @@ execplan::CalpontSelectExecutionPlan::SelectList makeUnionFromTable(
{
execplan::CalpontSelectExecutionPlan::SelectList unionVec;
unionVec.reserve(numberOfLegs);
for (size_t i = 0; i < numberOfLegs; ++i)
std::vector<std::pair<uint64_t, uint64_t>> bounds({{0, 3000961},
{3000961, std::numeric_limits<uint64_t>::max()}});
for (auto bound : bounds)
{
auto clonedCSEP = csep.cloneWORecursiveSelects();
// Add BETWEEN based on key column range
clonedCSEP->filters(filtersWithNewRangeAddedIfNeeded(clonedCSEP));
clonedCSEP->filters(filtersWithNewRangeAddedIfNeeded(clonedCSEP, bound));
unionVec.push_back(clonedCSEP);
}
@ -236,7 +242,7 @@ void applyParallelCES(execplan::CalpontSelectExecutionPlan& csep)
newDerivedTableList.push_back(derivedSCEP);
execplan::CalpontSystemCatalog::TableAliasName tn = execplan::make_aliasview("", "", tableAlias, "");
newTableList.push_back(tn);
// Remove the filters as they were pushed down to union units
// Remove the filters as they were pushed down to union units
derivedSCEP->filters(nullptr);
}
}