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feat(optimizer): better CSEP printer + shallow CSEP copy

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This commit is contained in:
drrtuy
2025-06-09 18:53:26 +00:00
parent 021a95c683
commit e8dc93b46d
2 changed files with 22 additions and 23 deletions
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44
dbcon/execplan/calpontselectexecutionplan.cpp
View File

@ -201,6 +201,17 @@ std::string endlWithIndent(const size_t ident)
return output.str();
}
void CalpontSelectExecutionPlan::printSubCSEP(const size_t& ident, ostringstream& output,
CalpontSelectExecutionPlan*& plan) const
{
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);
}
}
string CalpontSelectExecutionPlan::toString(const size_t ident) const
{
ostringstream output;
@ -228,29 +239,26 @@ string CalpontSelectExecutionPlan::toString(const size_t ident) const
// Returned Column
CalpontSelectExecutionPlan::ReturnedColumnList retCols = returnedCols();
output << ">>Returned Columns" << endlWithIndent(ident);
output << std::string(ident, ' ');
uint32_t seq = 0;
for (unsigned int i = 0; i < retCols.size(); i++)
{
output << *retCols[i] << endlWithIndent(ident);
output << *retCols[i] << endlWithIndent(ident+2); // WIP replace with constant
if (retCols[i]->colSource() & SELECT_SUB)
{
output << "select sub -- " << endlWithIndent(ident);
output << "select sub -- " << endlWithIndent(ident + 2);
CalpontSelectExecutionPlan* plan =
dynamic_cast<CalpontSelectExecutionPlan*>(fSelectSubList[seq++].get());
if (plan)
output << "{" << plan->toString(ident + 2) << "}" << endlWithIndent(ident);
printSubCSEP(ident, output, plan);
}
}
// From Clause
CalpontSelectExecutionPlan::TableList tables = tableList();
output << ">>From Tables" << endlWithIndent(ident);
output << std::string(ident, ' ');
output << ">>From Tables" << endlWithIndent(ident + 2);
seq = 0;
for (unsigned int i = 0; i < tables.size(); i++)
@ -258,34 +266,25 @@ 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);
output << "derived table - " << tables[i].alias << endlWithIndent(ident+2);
CalpontSelectExecutionPlan* plan =
dynamic_cast<CalpontSelectExecutionPlan*>(fDerivedTableList[seq++].get());
if (plan)
{
output << "{" << plan->toString(ident + 2) << "}" << endlWithIndent(ident);
}
output << std::string(ident, ' ');
printSubCSEP(ident, output, plan);
}
else
{
output << tables[i] << endl;
output << std::string(ident, ' ');
output << tables[i] << endlWithIndent(ident+2);
}
}
// Filters
output << ">>Filters" << endlWithIndent(ident);
output << std::string(ident, ' ');
if (filters() != nullptr)
filters()->walk(ParseTree::print, output);
else
output << "empty filter tree" << endlWithIndent(ident);
output << std::string(ident, ' ');
// Group by columns
const CalpontSelectExecutionPlan::GroupByColumnList& gbc = groupByCols();
@ -348,8 +347,7 @@ string CalpontSelectExecutionPlan::toString(const size_t ident) const
{
CalpontSelectExecutionPlan* plan = dynamic_cast<CalpontSelectExecutionPlan*>(unionVec()[i].get());
if (plan)
output << endlWithIndent(ident) << "{" << plan->toString(ident + 2) << "}\n" << endlWithIndent(ident);
printSubCSEP(ident, output, plan);
}
return output.str();
@ -915,8 +913,8 @@ execplan::SCSEP CalpontSelectExecutionPlan::cloneWORecursiveSelects()
newPlan->returnedCols(newReturnedCols);
// Deep copy of filters
if (fFilters)
newPlan->filters(new ParseTree(*fFilters));
// if (fFilters)
// newPlan->filters(new ParseTree(*fFilters));
// Deep copy of filter token list
newPlan->filterTokenList(fFilterTokenList);

1
dbcon/execplan/calpontselectexecutionplan.h
View File

@ -798,6 +798,7 @@ class CalpontSelectExecutionPlan : public CalpontExecutionPlan
* Return a string rep of the CSEP
* @return a string
*/
void printSubCSEP(const size_t& ident, ostringstream& output, CalpontSelectExecutionPlan*& plan) const;
virtual std::string toString(const size_t ident = 0) const;
/** @brief Is this an internal query?