morrySnow commented on code in PR #12785:
URL: https://github.com/apache/doris/pull/12785#discussion_r978252987
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/mv/SelectRollupWithAggregate.java:
##########
@@ -172,23 +183,33 @@ public List<Rule> buildRules() {
/**
* Select candidate rollup ids.
* <p>
- * todo: 0. turn off pre agg, checking input aggregate functions and group
by expressions, etc.
+ * 0. turn off pre agg, checking input aggregate functions and group by
expressions, etc.
* 1. rollup contains all the required output slots.
* 2. match the most prefix index if pushdown predicates present.
+ * 3. sort the result matching rollup index ids.
*/
- private List<Long> selectCandidateRollupIds(
- LogicalOlapScan olapScan,
+ private Pair<PreAggStatus, List<Long>> selectCandidateRollupIds(
+ LogicalOlapScan scan,
Set<Slot> requiredScanOutput,
List<Expression> predicates,
// not used now, reserved for checking aggregate function type
match.
- List<AggregateFunction> aggregateFunctions) {
-
Preconditions.checkArgument(Sets.newHashSet(olapScan.getOutput()).containsAll(requiredScanOutput),
- "Scan's output should contains all the input required scan
output.");
+ List<AggregateFunction> aggregateFunctions,
+ List<Expression> groupingExprs) {
+
Preconditions.checkArgument(Sets.newHashSet(scan.getOutput()).containsAll(requiredScanOutput),
Review Comment:
we have a new interface to get output set, however, it returns a set of
exprid. I don't know if you can use it directly here
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/PreAggStatus.java:
##########
@@ -0,0 +1,75 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package org.apache.doris.nereids.trees.plans;
+
+import java.util.function.Supplier;
+
+/**
+ * Pre-aggregate status for OLAP scan table.
+ */
+public class PreAggStatus {
+ private enum Status {
+ ON, OFF
+ }
+
+ private static PreAggStatus PRE_AGG_ON = new PreAggStatus(Status.ON, "");
Review Comment:
final
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/batch/NereidsRewriteJobExecutor.java:
##########
@@ -70,7 +71,8 @@ public NereidsRewriteJobExecutor(CascadesContext
cascadesContext) {
.add(topDownBatch(ImmutableList.of(new EliminateLimit())))
.add(topDownBatch(ImmutableList.of(new EliminateFilter())))
.add(topDownBatch(ImmutableList.of(new
PruneOlapScanPartition())))
- .add(topDownBatch(ImmutableList.of(new SelectRollup())))
+ .add(topDownBatch(ImmutableList.of(new
SelectRollupWithAggregate())))
+ .add(topDownBatch(ImmutableList.of(new
SelectRollupWithoutAggregate())))
Review Comment:
should we apply these rule before partition prune?
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