How to use

table

method

in

org.apache.calcite.rel.metadata.RelMdCollation

public ImmutableList<RelCollation> collations(EnumerableMergeJoin join,
  RelMetadataQuery mq) {
 // In general a join is not sorted. But a merge join preserves the sort
 // order of the left and right sides.
 return ImmutableList.copyOf(
   RelMdCollation.mergeJoin(mq, join.getLeft(), join.getRight(),
     join.getLeftKeys(), join.getRightKeys()));
}

public ImmutableList<RelCollation> collations(EnumerableMergeJoin join,
  RelMetadataQuery mq) {
 // In general a join is not sorted. But a merge join preserves the sort
 // order of the left and right sides.
 return ImmutableList.copyOf(
   RelMdCollation.mergeJoin(mq, join.getLeft(), join.getRight(),
     join.getLeftKeys(), join.getRightKeys()));
}

  RelMdCollation.table(empScan.getTable());
assertThat(collations.size(), equalTo(0));

  RelMdCollation.table(empScan.getTable());
assertThat(collations.size(), equalTo(0));