Examples with AggregateCall org.apache.calcite.rel.core.AggregateCall used on opensource projects

Example 96 with AggregateCall

use of org.apache.calcite.rel.core.AggregateCall in project drill by axbaretto.

the class AggPrelBase method createKeysAndExprs.

protected void createKeysAndExprs() {
    final List<String> childFields = getInput().getRowType().getFieldNames();
    final List<String> fields = getRowType().getFieldNames();
    for (int group : BitSets.toIter(groupSet)) {
        FieldReference fr = FieldReference.getWithQuotedRef(childFields.get(group));
        keys.add(new NamedExpression(fr, fr));
    }
    for (Ord<AggregateCall> aggCall : Ord.zip(aggCalls)) {
        int aggExprOrdinal = groupSet.cardinality() + aggCall.i;
        FieldReference ref = FieldReference.getWithQuotedRef(fields.get(aggExprOrdinal));
        LogicalExpression expr = toDrill(aggCall.e, childFields);
        NamedExpression ne = new NamedExpression(expr, ref);
        aggExprs.add(ne);
        if (getOperatorPhase() == OperatorPhase.PHASE_1of2) {
            if (aggCall.e.getAggregation().getName().equals("COUNT")) {
                // If we are doing a COUNT aggregate in Phase1of2, then in Phase2of2 we should SUM the COUNTs,
                SqlAggFunction sumAggFun = new SqlSumCountAggFunction(aggCall.e.getType());
                AggregateCall newAggCall = AggregateCall.create(sumAggFun, aggCall.e.isDistinct(), aggCall.e.isApproximate(), Collections.singletonList(aggExprOrdinal), aggCall.e.filterArg, aggCall.e.getType(), aggCall.e.getName());
                phase2AggCallList.add(newAggCall);
            } else {
                AggregateCall newAggCall = AggregateCall.create(aggCall.e.getAggregation(), aggCall.e.isDistinct(), aggCall.e.isApproximate(), Collections.singletonList(aggExprOrdinal), aggCall.e.filterArg, aggCall.e.getType(), aggCall.e.getName());
                phase2AggCallList.add(newAggCall);
            }
        }
    }
}

Example 97 with AggregateCall

use of org.apache.calcite.rel.core.AggregateCall in project drill by axbaretto.

the class AggPruleBase method create2PhasePlan.

// Create 2 phase aggr plan for aggregates such as SUM, MIN, MAX
// If any of the aggregate functions are not one of these, then we
// currently won't generate a 2 phase plan.
protected boolean create2PhasePlan(RelOptRuleCall call, DrillAggregateRel aggregate) {
    PlannerSettings settings = PrelUtil.getPlannerSettings(call.getPlanner());
    RelNode child = call.rel(0).getInputs().get(0);
    boolean smallInput = child.estimateRowCount(child.getCluster().getMetadataQuery()) < settings.getSliceTarget();
    if (!settings.isMultiPhaseAggEnabled() || settings.isSingleMode() || // Can override a small child - e.g., for testing with a small table
    (smallInput && !settings.isForce2phaseAggr())) {
        return false;
    }
    for (AggregateCall aggCall : aggregate.getAggCallList()) {
        String name = aggCall.getAggregation().getName();
        if (!(name.equals(SqlKind.SUM.name()) || name.equals(SqlKind.MIN.name()) || name.equals(SqlKind.MAX.name()) || name.equals(SqlKind.COUNT.name()) || name.equals("$SUM0"))) {
            return false;
        }
    }
    return true;
}

Example 98 with AggregateCall

use of org.apache.calcite.rel.core.AggregateCall in project drill by axbaretto.

the class ConvertCountToDirectScan method collectCounts.

/**
 * Collects counts for each aggregation call.
 * Will return empty result map if was not able to determine count for at least one aggregation call,
 *
 * For each aggregate call will determine if count can be calculated. Collects counts only for COUNT function.
 * For star, not null expressions and implicit columns sets count to total record number.
 * For other cases obtains counts from group scan operator. Also count can not be calculated for parition columns.
 *
 * @param agg aggregate relational expression
 * @param scan scan relational expression
 * @param project project relational expression
 * @return result map where key is count column name, value is count value
 */
private Map<String, Long> collectCounts(PlannerSettings settings, DrillAggregateRel agg, DrillScanRel scan, DrillProjectRel project) {
    final Set<String> implicitColumnsNames = ColumnExplorer.initImplicitFileColumns(settings.getOptions()).keySet();
    final GroupScan oldGrpScan = scan.getGroupScan();
    final long totalRecordCount = oldGrpScan.getScanStats(settings).getRecordCount();
    final LinkedHashMap<String, Long> result = new LinkedHashMap<>();
    for (int i = 0; i < agg.getAggCallList().size(); i++) {
        AggregateCall aggCall = agg.getAggCallList().get(i);
        // for (AggregateCall aggCall : agg.getAggCallList()) {
        long cnt;
        // rule can be applied only for count function, return empty counts
        if (!"count".equalsIgnoreCase(aggCall.getAggregation().getName())) {
            return ImmutableMap.of();
        }
        if (containsStarOrNotNullInput(aggCall, agg)) {
            cnt = totalRecordCount;
        } else if (aggCall.getArgList().size() == 1) {
            // count(columnName) ==> Agg ( Scan )) ==> columnValueCount
            int index = aggCall.getArgList().get(0);
            if (project != null) {
                // return count of "col2" in Scan's metadata, if found.
                if (!(project.getProjects().get(index) instanceof RexInputRef)) {
                    // do not apply for all other cases.
                    return ImmutableMap.of();
                }
                index = ((RexInputRef) project.getProjects().get(index)).getIndex();
            }
            String columnName = scan.getRowType().getFieldNames().get(index).toLowerCase();
            // for implicit column count will the same as total record count
            if (implicitColumnsNames.contains(columnName)) {
                cnt = totalRecordCount;
            } else {
                SchemaPath simplePath = SchemaPath.getSimplePath(columnName);
                if (ColumnExplorer.isPartitionColumn(settings.getOptions(), simplePath)) {
                    return ImmutableMap.of();
                }
                cnt = oldGrpScan.getColumnValueCount(simplePath);
                if (cnt == GroupScan.NO_COLUMN_STATS) {
                    // if column stats is not available don't apply this rule, return empty counts
                    return ImmutableMap.of();
                }
            }
        } else {
            return ImmutableMap.of();
        }
        String name = "count" + i + "$" + (aggCall.getName() == null ? aggCall.toString() : aggCall.getName());
        result.put(name, cnt);
    }
    return ImmutableMap.copyOf(result);
}

Example 99 with AggregateCall

use of org.apache.calcite.rel.core.AggregateCall in project drill by axbaretto.

the class DrillReduceAggregatesRule method reduceSum.

private RexNode reduceSum(Aggregate oldAggRel, AggregateCall oldCall, List<AggregateCall> newCalls, Map<AggregateCall, RexNode> aggCallMapping) {
    final PlannerSettings plannerSettings = (PlannerSettings) oldAggRel.getCluster().getPlanner().getContext();
    final boolean isInferenceEnabled = plannerSettings.isTypeInferenceEnabled();
    final int nGroups = oldAggRel.getGroupCount();
    RelDataTypeFactory typeFactory = oldAggRel.getCluster().getTypeFactory();
    RexBuilder rexBuilder = oldAggRel.getCluster().getRexBuilder();
    int arg = oldCall.getArgList().get(0);
    RelDataType argType = getFieldType(oldAggRel.getInput(), arg);
    final RelDataType sumType;
    final SqlAggFunction sumZeroAgg;
    if (isInferenceEnabled) {
        sumType = oldCall.getType();
    } else {
        sumType = typeFactory.createTypeWithNullability(oldCall.getType(), argType.isNullable());
    }
    sumZeroAgg = new DrillCalciteSqlAggFunctionWrapper(new SqlSumEmptyIsZeroAggFunction(), sumType);
    AggregateCall sumZeroCall = AggregateCall.create(sumZeroAgg, oldCall.isDistinct(), oldCall.isApproximate(), oldCall.getArgList(), -1, sumType, null);
    final SqlCountAggFunction countAgg = (SqlCountAggFunction) SqlStdOperatorTable.COUNT;
    final RelDataType countType = countAgg.getReturnType(typeFactory);
    AggregateCall countCall = AggregateCall.create(countAgg, oldCall.isDistinct(), oldCall.isApproximate(), oldCall.getArgList(), -1, countType, null);
    // NOTE:  these references are with respect to the output
    // of newAggRel
    RexNode sumZeroRef = rexBuilder.addAggCall(sumZeroCall, nGroups, oldAggRel.indicator, newCalls, aggCallMapping, ImmutableList.of(argType));
    if (!oldCall.getType().isNullable()) {
        // null). Therefore we translate to SUM0(x).
        return sumZeroRef;
    }
    RexNode countRef = rexBuilder.addAggCall(countCall, nGroups, oldAggRel.indicator, newCalls, aggCallMapping, ImmutableList.of(argType));
    return rexBuilder.makeCall(SqlStdOperatorTable.CASE, rexBuilder.makeCall(SqlStdOperatorTable.EQUALS, countRef, rexBuilder.makeExactLiteral(BigDecimal.ZERO)), rexBuilder.constantNull(), sumZeroRef);
}

Example 100 with AggregateCall

use of org.apache.calcite.rel.core.AggregateCall in project drill by axbaretto.

the class DrillWindowRel method implement.

@Override
public LogicalOperator implement(DrillImplementor implementor) {
    final LogicalOperator inputOp = implementor.visitChild(this, 0, getInput());
    org.apache.drill.common.logical.data.Window.Builder builder = new org.apache.drill.common.logical.data.Window.Builder();
    final List<String> fields = getRowType().getFieldNames();
    final List<String> childFields = getInput().getRowType().getFieldNames();
    for (Group window : groups) {
        for (RelFieldCollation orderKey : window.orderKeys.getFieldCollations()) {
            builder.addOrdering(new Order.Ordering(orderKey.getDirection(), new FieldReference(fields.get(orderKey.getFieldIndex()))));
        }
        for (int group : BitSets.toIter(window.keys)) {
            FieldReference fr = new FieldReference(childFields.get(group), ExpressionPosition.UNKNOWN);
            builder.addWithin(fr, fr);
        }
        int groupCardinality = window.keys.cardinality();
        for (Ord<AggregateCall> aggCall : Ord.zip(window.getAggregateCalls(this))) {
            FieldReference ref = new FieldReference(fields.get(groupCardinality + aggCall.i));
            LogicalExpression expr = toDrill(aggCall.e, childFields);
            builder.addAggregation(ref, expr);
        }
    }
    builder.setInput(inputOp);
    org.apache.drill.common.logical.data.Window frame = builder.build();
    return frame;
}