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feat(optimizer): temporary shield optimizer with a session variable

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This commit is contained in:
drrtuy
2025-06-16 16:37:03 +00:00
parent 98cb6dddee
commit e57832ee64
5 changed files with 59 additions and 58 deletions
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79
dbcon/execplan/calpontselectexecutionplan.cpp
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@ -206,59 +206,58 @@ void CalpontSelectExecutionPlan::printSubCSEP(const size_t& ident, ostringstream
{
if (plan)
{
output << endlWithIndent(ident) << "{" << endlWithIndent(ident + 2) << plan->toString(ident + 2);
// remove last two spaces from the stream.
output.seekp(-2, std::ios::cur);
output << "}" << std::endl << endlWithIndent(ident);
output << endlWithIndent(ident) << "{";
output << plan->toString(ident + 2);
output << endlWithIndent(ident) << "}";
}
}
string CalpontSelectExecutionPlan::toString(const size_t ident) const
{
ostringstream output;
output << "SELECT ";
output << endlWithIndent(ident) << "SELECT ";
if (distinct())
{
output << "DISTINCT ";
output << endlWithIndent(ident) << "DISTINCT ";
}
output << "limit: " << limitStart() << " - " << limitNum() << endlWithIndent(ident);
output << endlWithIndent(ident) << "limit: " << limitStart() << " - " << limitNum();
switch (location())
{
case CalpontSelectExecutionPlan::MAIN: output << "MAIN" << endlWithIndent(ident); break;
case CalpontSelectExecutionPlan::MAIN: output << endlWithIndent(ident) << "MAIN"; break;
case CalpontSelectExecutionPlan::FROM: output << "FROM" << endlWithIndent(ident); break;
case CalpontSelectExecutionPlan::FROM: output << endlWithIndent(ident) << "FROM"; break;
case CalpontSelectExecutionPlan::WHERE: output << "WHERE" << endlWithIndent(ident); break;
case CalpontSelectExecutionPlan::WHERE: output << endlWithIndent(ident) << "WHERE"; break;
case CalpontSelectExecutionPlan::HAVING: output << "HAVING" << endlWithIndent(ident); break;
}
// Returned Column
CalpontSelectExecutionPlan::ReturnedColumnList retCols = returnedCols();
output << ">>Returned Columns" << endlWithIndent(ident);
output << endlWithIndent(ident) << ">>Returned Columns";
uint32_t seq = 0;
for (unsigned int i = 0; i < retCols.size(); i++)
{
output << *retCols[i] << endlWithIndent(ident+2); // WIP replace with constant
output << endlWithIndent(ident+2) << *retCols[i]; // WIP replace with constant
if (retCols[i]->colSource() & SELECT_SUB)
{
output << "select sub -- " << endlWithIndent(ident + 2);
output << endlWithIndent(ident + 2) << "select sub -- ";
CalpontSelectExecutionPlan* plan =
dynamic_cast<CalpontSelectExecutionPlan*>(fSelectSubList[seq++].get());
printSubCSEP(ident, output, plan);
printSubCSEP(ident + 2, output, plan);
}
}
// From Clause
CalpontSelectExecutionPlan::TableList tables = tableList();
output << ">>From Tables" << endlWithIndent(ident + 2);
output << endlWithIndent(ident) <<">>From Tables";
seq = 0;
for (unsigned int i = 0; i < tables.size(); i++)
@ -266,28 +265,29 @@ string CalpontSelectExecutionPlan::toString(const size_t ident) const
// derived table
if (tables[i].schema.length() == 0 && tables[i].table.length() == 0)
{
output << "derived table - " << tables[i].alias << endlWithIndent(ident+2);
output << endlWithIndent(ident+2) << "derived table - " << tables[i].alias;
CalpontSelectExecutionPlan* plan =
dynamic_cast<CalpontSelectExecutionPlan*>(fDerivedTableList[seq++].get());
printSubCSEP(ident, output, plan);
printSubCSEP(ident + 2, output, plan);
}
else
{
output << tables[i] << endlWithIndent(ident+2);
output << endlWithIndent(ident+2) << tables[i];
}
}
// Filters
output << ">>Filters" << endlWithIndent(ident);
output << endlWithIndent(ident) << ">>Filters";
if (filters() != nullptr)
{
output << endlWithIndent(ident + 2);
filters()->walk(ParseTree::print, output);
}
else
{
output << "empty filter tree" << endlWithIndent(ident);
output << endlWithIndent(ident + 2) << "empty filter tree";
}
// Group by columns
@ -295,12 +295,12 @@ string CalpontSelectExecutionPlan::toString(const size_t ident) const
if (gbc.size() > 0)
{
output << ">>Group By Columns" << endlWithIndent(ident);
output << endlWithIndent(ident) << ">>Group By Columns";
output << std::string(ident, ' ');
for (unsigned int i = 0; i < gbc.size(); i++)
{
output << *gbc[i] << endlWithIndent(ident);
output << endlWithIndent(ident + 2) << *gbc[i];
}
output << std::string(ident, ' ');
}
@ -308,8 +308,7 @@ string CalpontSelectExecutionPlan::toString(const size_t ident) const
// Having
if (having() != nullptr)
{
output << ">>Having" << endlWithIndent(ident);
output << std::string(ident, ' ');
output << endlWithIndent(ident) << ">>Having" << endlWithIndent(ident + 2);
having()->walk(ParseTree::print, output);
}
@ -318,33 +317,35 @@ string CalpontSelectExecutionPlan::toString(const size_t ident) const
if (obc.size() > 0)
{
output << ">>Order By Columns" << endlWithIndent(ident);
output << endlWithIndent(ident) << ">>Order By Columns";
for (unsigned int i = 0; i < obc.size(); i++)
output << *obc[i] << endlWithIndent(ident);
output << endlWithIndent(ident + 2) << *obc[i];
}
output << "SessionID: " << fSessionID << endlWithIndent(ident);
output << "TxnID: " << fTxnID << endlWithIndent(ident);
output << "VerID: " << fVerID << endlWithIndent(ident);
output << "TraceFlags: " << fTraceFlags << endlWithIndent(ident);
output << "StatementID: " << fStatementID << endlWithIndent(ident);
output << "DistUnionNum: " << (int)fDistinctUnionNum << endlWithIndent(ident);
output << "Limit: " << fLimitStart << " - " << fLimitNum << endlWithIndent(ident);
output << "String table threshold: " << fStringTableThreshold << endlWithIndent(ident);
output << endlWithIndent(ident) << "SessionID: " << fSessionID;
output << endlWithIndent(ident) << "TxnID: " << fTxnID;
output << endlWithIndent(ident) << "VerID: " << fVerID;
output << endlWithIndent(ident) << "TraceFlags: " << fTraceFlags;
output << endlWithIndent(ident) << "StatementID: " << fStatementID;
output << endlWithIndent(ident) << "DistUnionNum: " << (int)fDistinctUnionNum;
output << endlWithIndent(ident) << "Limit: " << fLimitStart << " - " << fLimitNum;
output << endlWithIndent(ident) << "String table threshold: " << fStringTableThreshold;
output << "--- Column Map ---" << endlWithIndent(ident);
output << endlWithIndent(ident) << "--- Column Map ---";
CalpontSelectExecutionPlan::ColumnMap::const_iterator iter;
for (iter = columnMap().begin(); iter != columnMap().end(); iter++)
output << (*iter).first << " : " << (*iter).second << endlWithIndent(ident);
{
output << endlWithIndent(ident + 2) << (*iter).first << " : " << (*iter).second;
}
output << "UUID: " << fUuid << endlWithIndent(ident);
output << "QueryType: " << queryType() << endlWithIndent(ident);
output << endlWithIndent(ident) << "UUID: " << fUuid;
output << endlWithIndent(ident) << "QueryType: " << queryType();
if (!unionVec().empty())
{
output << "--- Union Unit ---";
output << endlWithIndent(ident) << "--- Union Unit ---";
}
for (unsigned i = 0; i < unionVec().size(); i++)