Examples with MergePhase io.crate.execution.dsl.phases.MergePhase used on opensource projects

Example 21 with MergePhase

use of io.crate.execution.dsl.phases.MergePhase in project crate by crate.

the class GroupByPlannerTest method testGroupByHavingNonDistributed.

@Test
public void testGroupByHavingNonDistributed() throws Exception {
    var e = SQLExecutor.builder(clusterService, 2, RandomizedTest.getRandom(), List.of()).addTable(TableDefinitions.USER_TABLE_DEFINITION).build();
    Merge merge = e.plan("select id from users group by id having id > 0");
    Collect collect = (Collect) merge.subPlan();
    RoutedCollectPhase collectPhase = ((RoutedCollectPhase) collect.collectPhase());
    assertThat(collectPhase.where(), isSQL("(doc.users.id > 0::bigint)"));
    assertThat(collectPhase.projections(), contains(instanceOf(GroupProjection.class)));
    MergePhase localMergeNode = merge.mergePhase();
    assertThat(localMergeNode.projections(), empty());
}

Example 22 with MergePhase

use of io.crate.execution.dsl.phases.MergePhase in project crate by crate.

the class GroupByPlannerTest method testGroupByWithHavingAndLimit.

@Test
public void testGroupByWithHavingAndLimit() throws Exception {
    var e = SQLExecutor.builder(clusterService, 2, RandomizedTest.getRandom(), List.of()).addTable(TableDefinitions.USER_TABLE_DEFINITION).build();
    Merge planNode = e.plan("select count(*), name from users group by name having count(*) > 1 limit 100");
    Merge reducerMerge = (Merge) planNode.subPlan();
    // reducer
    MergePhase mergePhase = reducerMerge.mergePhase();
    Projection projection = mergePhase.projections().get(1);
    assertThat(projection, instanceOf(FilterProjection.class));
    FilterProjection filterProjection = (FilterProjection) projection;
    Symbol countArgument = ((Function) filterProjection.query()).arguments().get(0);
    assertThat(countArgument, instanceOf(InputColumn.class));
    // pointing to second output from group projection
    assertThat(((InputColumn) countArgument).index(), is(1));
    // outputs: name, count(*)
    TopNProjection topN = (TopNProjection) mergePhase.projections().get(2);
    assertThat(topN.outputs().get(0).valueType(), Is.is(DataTypes.STRING));
    assertThat(topN.outputs().get(1).valueType(), Is.<DataType>is(DataTypes.LONG));
    MergePhase localMerge = planNode.mergePhase();
    // topN projection
    // outputs: count(*), name
    topN = (TopNProjection) localMerge.projections().get(0);
    assertThat(topN.outputs().get(0).valueType(), Is.<DataType>is(DataTypes.LONG));
    assertThat(topN.outputs().get(1).valueType(), Is.<DataType>is(DataTypes.STRING));
}

Example 23 with MergePhase

use of io.crate.execution.dsl.phases.MergePhase in project crate by crate.

the class GroupByPlannerTest method testGroupByHaving.

@Test
public void testGroupByHaving() throws Exception {
    var e = SQLExecutor.builder(clusterService, 2, RandomizedTest.getRandom(), List.of()).addTable(TableDefinitions.USER_TABLE_DEFINITION).build();
    Merge distributedGroupByMerge = e.plan("select avg(date), name from users group by name having min(date) > '1970-01-01'");
    Merge reduceMerge = (Merge) distributedGroupByMerge.subPlan();
    CollectPhase collectPhase = ((Collect) reduceMerge.subPlan()).collectPhase();
    assertThat(collectPhase.projections().size(), is(1));
    assertThat(collectPhase.projections().get(0), instanceOf(GroupProjection.class));
    MergePhase reducePhase = reduceMerge.mergePhase();
    assertThat(reducePhase.projections().size(), is(3));
    // grouping
    assertThat(reducePhase.projections().get(0), instanceOf(GroupProjection.class));
    GroupProjection groupProjection = (GroupProjection) reducePhase.projections().get(0);
    assertThat(groupProjection.values().size(), is(2));
    // filter the having clause
    assertThat(reducePhase.projections().get(1), instanceOf(FilterProjection.class));
    FilterProjection filterProjection = (FilterProjection) reducePhase.projections().get(1);
    assertThat(reducePhase.projections().get(2), instanceOf(EvalProjection.class));
    EvalProjection eval = (EvalProjection) reducePhase.projections().get(2);
    assertThat(eval.outputs().get(0).valueType(), Is.<DataType>is(DataTypes.DOUBLE));
    assertThat(eval.outputs().get(1).valueType(), Is.<DataType>is(DataTypes.STRING));
}

Example 24 with MergePhase

use of io.crate.execution.dsl.phases.MergePhase in project crate by crate.

the class GroupByPlannerTest method testCountDistinctWithGroupBy.

@Test
public void testCountDistinctWithGroupBy() throws Exception {
    var e = SQLExecutor.builder(clusterService, 2, RandomizedTest.getRandom(), List.of()).addTable(TableDefinitions.USER_TABLE_DEFINITION).build();
    Merge distributedGroupByMerge = e.plan("select count(distinct id), name from users group by name order by count(distinct id)");
    Merge reducerMerge = (Merge) distributedGroupByMerge.subPlan();
    CollectPhase collectPhase = ((Collect) reducerMerge.subPlan()).collectPhase();
    // collect
    assertThat(collectPhase.toCollect().get(0), instanceOf(Reference.class));
    assertThat(collectPhase.toCollect().size(), is(2));
    assertThat(((Reference) collectPhase.toCollect().get(0)).column().name(), is("id"));
    assertThat(((Reference) collectPhase.toCollect().get(1)).column().name(), is("name"));
    Projection projection = collectPhase.projections().get(0);
    assertThat(projection, instanceOf(GroupProjection.class));
    GroupProjection groupProjection = (GroupProjection) projection;
    Symbol groupKey = groupProjection.keys().get(0);
    assertThat(groupKey, instanceOf(InputColumn.class));
    assertThat(((InputColumn) groupKey).index(), is(1));
    assertThat(groupProjection.values().size(), is(1));
    assertThat(groupProjection.mode(), is(AggregateMode.ITER_PARTIAL));
    Aggregation aggregation = groupProjection.values().get(0);
    Symbol aggregationInput = aggregation.inputs().get(0);
    assertThat(aggregationInput.symbolType(), is(SymbolType.INPUT_COLUMN));
    // reducer
    MergePhase mergePhase = reducerMerge.mergePhase();
    assertThat(mergePhase.projections(), contains(instanceOf(GroupProjection.class), instanceOf(OrderedTopNProjection.class), instanceOf(EvalProjection.class)));
    Projection groupProjection1 = mergePhase.projections().get(0);
    groupProjection = (GroupProjection) groupProjection1;
    assertThat(groupProjection.keys().get(0), instanceOf(InputColumn.class));
    assertThat(((InputColumn) groupProjection.keys().get(0)).index(), is(0));
    assertThat(groupProjection.mode(), is(AggregateMode.PARTIAL_FINAL));
    assertThat(groupProjection.values().get(0), instanceOf(Aggregation.class));
    OrderedTopNProjection topNProjection = (OrderedTopNProjection) mergePhase.projections().get(1);
    Symbol collection_count = topNProjection.outputs().get(0);
    assertThat(collection_count, SymbolMatchers.isInputColumn(0));
    // handler
    MergePhase localMergeNode = distributedGroupByMerge.mergePhase();
    assertThat(localMergeNode.projections(), Matchers.emptyIterable());
}

Example 25 with MergePhase

use of io.crate.execution.dsl.phases.MergePhase in project crate by crate.

the class GroupByPlannerTest method testGroupByWithAggregationAndLimit.

@Test
public void testGroupByWithAggregationAndLimit() throws Exception {
    var e = SQLExecutor.builder(clusterService, 2, RandomizedTest.getRandom(), List.of()).addTable(TableDefinitions.USER_TABLE_DEFINITION).build();
    Merge distributedGroupByMerge = e.plan("select count(*), name from users group by name limit 1 offset 1");
    Merge reducerMerge = (Merge) distributedGroupByMerge.subPlan();
    // distributed merge
    MergePhase distributedMergePhase = reducerMerge.mergePhase();
    assertThat(distributedMergePhase.projections().get(0), instanceOf(GroupProjection.class));
    assertThat(distributedMergePhase.projections().get(1), instanceOf(TopNProjection.class));
    // limit must include offset because the real limit can only be applied on the handler
    // after all rows have been gathered.
    TopNProjection topN = (TopNProjection) distributedMergePhase.projections().get(1);
    assertThat(topN.limit(), is(2));
    assertThat(topN.offset(), is(0));
    // local merge
    MergePhase localMergePhase = distributedGroupByMerge.mergePhase();
    assertThat(localMergePhase.projections().get(0), instanceOf(TopNProjection.class));
    topN = (TopNProjection) localMergePhase.projections().get(0);
    assertThat(topN.limit(), is(1));
    assertThat(topN.offset(), is(1));
    assertThat(topN.outputs().get(0), instanceOf(InputColumn.class));
    assertThat(((InputColumn) topN.outputs().get(0)).index(), is(0));
    assertThat(topN.outputs().get(1), instanceOf(InputColumn.class));
    assertThat(((InputColumn) topN.outputs().get(1)).index(), is(1));
}