How to use
makeSemiJoinSelectivityRexNode
method
in
org.apache.calcite.rel.metadata.RelMdUtil

Best Java code snippets using org.apache.calcite.rel.metadata.RelMdUtil.makeSemiJoinSelectivityRexNode (Showing top 6 results out of 315)

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public Double getRowCount(SemiJoin rel, RelMetadataQuery mq) {
 // create a RexNode representing the selectivity of the
 // semijoin filter and pass it to getSelectivity
 RexNode semiJoinSelectivity =
   RelMdUtil.makeSemiJoinSelectivityRexNode(mq, rel);
 return NumberUtil.multiply(
   mq.getSelectivity(rel.getLeft(), semiJoinSelectivity),
   mq.getRowCount(rel.getLeft()));
}

public Double getRowCount(SemiJoin rel, RelMetadataQuery mq) {
 // create a RexNode representing the selectivity of the
 // semijoin filter and pass it to getSelectivity
 RexNode semiJoinSelectivity =
   RelMdUtil.makeSemiJoinSelectivityRexNode(mq, rel);
 return NumberUtil.multiply(
   mq.getSelectivity(rel.getLeft(), semiJoinSelectivity),
   mq.getRowCount(rel.getLeft()));
}

public Double getSelectivity(SemiJoin rel, RelMetadataQuery mq,
  RexNode predicate) {
 // create a RexNode representing the selectivity of the
 // semijoin filter and pass it to getSelectivity
 RexBuilder rexBuilder = rel.getCluster().getRexBuilder();
 RexNode newPred = RelMdUtil.makeSemiJoinSelectivityRexNode(mq, rel);
 if (predicate != null) {
  newPred =
    rexBuilder.makeCall(
      SqlStdOperatorTable.AND,
      newPred,
      predicate);
 }
 return mq.getSelectivity(rel.getLeft(), newPred);
}

public Double getSelectivity(SemiJoin rel, RelMetadataQuery mq,
  RexNode predicate) {
 // create a RexNode representing the selectivity of the
 // semijoin filter and pass it to getSelectivity
 RexBuilder rexBuilder = rel.getCluster().getRexBuilder();
 RexNode newPred = RelMdUtil.makeSemiJoinSelectivityRexNode(mq, rel);
 if (predicate != null) {
  newPred =
    rexBuilder.makeCall(
      SqlStdOperatorTable.AND,
      newPred,
      predicate);
 }
 return mq.getSelectivity(rel.getLeft(), newPred);
}

public Double getDistinctRowCount(SemiJoin rel, RelMetadataQuery mq,
  ImmutableBitSet groupKey, RexNode predicate) {
 if (predicate == null || predicate.isAlwaysTrue()) {
  if (groupKey.isEmpty()) {
   return 1D;
  }
 }
 // create a RexNode representing the selectivity of the
 // semijoin filter and pass it to getDistinctRowCount
 RexNode newPred = RelMdUtil.makeSemiJoinSelectivityRexNode(mq, rel);
 if (predicate != null) {
  RexBuilder rexBuilder = rel.getCluster().getRexBuilder();
  newPred =
    rexBuilder.makeCall(
      SqlStdOperatorTable.AND,
      newPred,
      predicate);
 }
 return mq.getDistinctRowCount(rel.getLeft(), groupKey, newPred);
}

public Double getDistinctRowCount(SemiJoin rel, RelMetadataQuery mq,
  ImmutableBitSet groupKey, RexNode predicate) {
 if (predicate == null || predicate.isAlwaysTrue()) {
  if (groupKey.isEmpty()) {
   return 1D;
  }
 }
 // create a RexNode representing the selectivity of the
 // semijoin filter and pass it to getDistinctRowCount
 RexNode newPred = RelMdUtil.makeSemiJoinSelectivityRexNode(mq, rel);
 if (predicate != null) {
  RexBuilder rexBuilder = rel.getCluster().getRexBuilder();
  newPred =
    rexBuilder.makeCall(
      SqlStdOperatorTable.AND,
      newPred,
      predicate);
 }
 return mq.getDistinctRowCount(rel.getLeft(), groupKey, newPred);
}

Javadoc

Creates a RexNode that stores a selectivity value corresponding to the selectivity of a semijoin. This can be added to a filter to simulate the effect of the semijoin during costing, but should never appear in a real plan since it has no physical implementation.

Popular methods of RelMdUtil

guessSelectivity
Returns default estimates for selectivities, in the absence of stats.
areColumnsDefinitelyUnique
Returns true if the columns represented in a bit mask are definitely known to form a unique column s
areColumnsDefinitelyUniqueWhenNullsFiltered
Returns true if the columns represented in a bit mask are definitely known to form a unique column s
getJoinDistinctRowCount
Computes the number of distinct rows for a set of keys returned from a join. Also known as NDV (numb
minusPreds
Takes the difference between two predicates, removing from the first any predicates also in the seco
estimateFilteredRows
linear
Returns a point on a line.The result is always a value between minY and maxY, even if x is not betwe
getJoinRowCount
Returns an estimate of the number of rows returned by a Join.
areColumnsUnique
areColumnsUniqueWhenNullsFiltered
capInfinity
Caps a double value at Double.MAX_VALUE if it's currently infinity
cardOfProjExpr
Computes the cardinality of a particular expression from the projection list.

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How to use makeSemiJoinSelectivityRexNodemethodin org.apache.calcite.rel.metadata.RelMdUtil

Best Java code snippets using org.apache.calcite.rel.metadata.RelMdUtil.makeSemiJoinSelectivityRexNode (Showing top 6 results out of 315)

How to use
makeSemiJoinSelectivityRexNode
method
in
org.apache.calcite.rel.metadata.RelMdUtil