ValueIdSet TableDesc::getLocalPreds()
{
ValueIdSet localPreds;
localPreds.clear();
// We can get this information from TableAnalysis
const TableAnalysis * tableAnalysis = getTableAnalysis();
// if no tableAnalysis exists, return FALSE
if(tableAnalysis)
localPreds = tableAnalysis->getLocalPreds();
return localPreds;
}
void
IndexDesc::getNonKeyColumnSet(ValueIdSet& nonKeyColumnSet) const
{
const ValueIdList
&indexColumns = getIndexColumns(),
&keyColumns = getIndexKey();
// clean up input:
nonKeyColumnSet.clear();
// Add all index columns
CollIndex i = 0;
for (i=0;
i < indexColumns.entries();
i++)
{
nonKeyColumnSet.insert(indexColumns[i]);
}
// And remove all key columns:
for (i=0;
i < keyColumns.entries();
i++)
{
nonKeyColumnSet.remove(keyColumns[i]);
// if this is a secondary index, the base column
// which is part of the index,
// may also be present, remove it:
const ItemExpr *colPtr = keyColumns[i].getItemExpr();
if (colPtr->getOperatorType()
==
ITM_INDEXCOLUMN)
{
const ValueId & colDef = ((IndexColumn *)(colPtr))->getDefinition();
nonKeyColumnSet.remove(colDef);
}
}
} // IndexDesc::getNonKeyColumnSet(ValueIdSet& nonKeyColumnSet) const
void MultiJoin::getPotentialOutputValues(ValueIdSet & outputValues) const
{
outputValues.clear();
CANodeIdSet jbbcs = jbbSubset_.getJBBCs();
Int32 arity = getArity();
for (Lng32 i = 0; i < arity; i++)
{
JBBC * jbbci =
child(i)->getGroupAnalysis()->getNodeAnalysis()->getJBBC();
if(jbbci->parentIsLeftJoin())
outputValues.insertList(jbbci->nullInstantiatedOutput());
else
// Default implementation is good enough for innerNonSemi multi join
outputValues += child(i).getGroupAttr()->getCharacteristicOutputs();
}
} // MultiJoin::getPotentialOutputValues()