예제 #1
0
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;
}
예제 #2
0
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
예제 #3
0
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()