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compressed materialize for group by
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159 changes: 159 additions & 0 deletions
159
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/analysis/CompressedMaterialize.java
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| @@ -0,0 +1,159 @@ | ||
| // 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.rules.analysis; | ||
|
|
||
| import org.apache.doris.nereids.properties.OrderKey; | ||
| import org.apache.doris.nereids.rules.Rule; | ||
| import org.apache.doris.nereids.rules.RuleType; | ||
| import org.apache.doris.nereids.trees.expressions.Alias; | ||
| import org.apache.doris.nereids.trees.expressions.Expression; | ||
| import org.apache.doris.nereids.trees.expressions.NamedExpression; | ||
| import org.apache.doris.nereids.trees.expressions.SlotReference; | ||
| import org.apache.doris.nereids.trees.expressions.functions.scalar.DecodeAsVarchar; | ||
| import org.apache.doris.nereids.trees.expressions.functions.scalar.EncodeAsBigInt; | ||
| import org.apache.doris.nereids.trees.expressions.functions.scalar.EncodeAsInt; | ||
| import org.apache.doris.nereids.trees.expressions.functions.scalar.EncodeAsLargeInt; | ||
| import org.apache.doris.nereids.trees.expressions.functions.scalar.EncodeAsSmallInt; | ||
| import org.apache.doris.nereids.trees.plans.Plan; | ||
| import org.apache.doris.nereids.trees.plans.logical.LogicalAggregate; | ||
| import org.apache.doris.nereids.trees.plans.logical.LogicalSort; | ||
| import org.apache.doris.nereids.types.DataType; | ||
| import org.apache.doris.nereids.types.coercion.CharacterType; | ||
| import org.apache.doris.nereids.util.ExpressionUtils; | ||
| import org.apache.doris.qe.ConnectContext; | ||
|
|
||
| import com.google.common.base.Preconditions; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.common.collect.Lists; | ||
| import com.google.common.collect.Maps; | ||
|
|
||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| /** | ||
| * select A from T group by A | ||
| * => | ||
| * select any_value(A) from T group by encode_as_int(A) | ||
| */ | ||
| public class CompressedMaterialize implements AnalysisRuleFactory { | ||
| @Override | ||
| public List<Rule> buildRules() { | ||
| return ImmutableList.of( | ||
| RuleType.COMPRESSED_MATERIALIZE_AGG.build( | ||
| logicalAggregate().when(a -> ConnectContext.get() != null | ||
| && ConnectContext.get().getSessionVariable().enableCompressMaterialize) | ||
| .then(this::compressedMaterializeAggregate)), | ||
| RuleType.COMPRESSED_MATERIALIZE_SORT.build( | ||
| logicalSort().then(this::compressMaterializeSort) | ||
| ) | ||
| ); | ||
| } | ||
|
|
||
| private LogicalSort<Plan> compressMaterializeSort(LogicalSort<Plan> sort) { | ||
| // List<Expression> orderExpressions = sort.getOrderKeys().stream() | ||
| // .map(OrderKey::getExpr).collect(Collectors.toList()); | ||
| List<OrderKey> newOrderKeys = Lists.newArrayList(); | ||
| boolean changed = false; | ||
| for (OrderKey orderKey : sort.getOrderKeys()) { | ||
| Expression expr = orderKey.getExpr(); | ||
| Optional<Expression> encode = getEncodeExpression(expr); | ||
| if (encode.isPresent()) { | ||
| newOrderKeys.add(new OrderKey(encode.get(), | ||
| orderKey.isAsc(), | ||
| orderKey.isNullFirst())); | ||
| changed = true; | ||
| } else { | ||
| newOrderKeys.add(orderKey); | ||
| } | ||
| } | ||
| return changed ? sort.withOrderKeys(newOrderKeys) : sort; | ||
| } | ||
|
|
||
| private Optional<Expression> getEncodeExpression(Expression expression) { | ||
| DataType type = expression.getDataType(); | ||
| Expression encodeExpr = null; | ||
| if (type instanceof CharacterType) { | ||
| CharacterType ct = (CharacterType) type; | ||
| if (ct.getLen() > 1) { | ||
| // skip column from variant, like 'L.var["L_SHIPMODE"] AS TEXT' | ||
| if (ct.getLen() < 2) { | ||
| encodeExpr = new EncodeAsSmallInt(expression); | ||
| } else if (ct.getLen() < 4) { | ||
| encodeExpr = new EncodeAsInt(expression); | ||
| } else if (ct.getLen() < 7) { | ||
| encodeExpr = new EncodeAsBigInt(expression); | ||
| } else if (ct.getLen() < 15) { | ||
| encodeExpr = new EncodeAsLargeInt(expression); | ||
| } | ||
| } | ||
| } | ||
| return Optional.ofNullable(encodeExpr); | ||
| } | ||
|
|
||
| /* | ||
| example: | ||
| [support] select sum(v) from t group by substring(k, 1,2) | ||
| [not support] select substring(k, 1,2), sum(v) from t group by substring(k, 1,2) | ||
| [support] select k, sum(v) from t group by k | ||
| [not support] select substring(k, 1,2), sum(v) from t group by k | ||
| [support] select A as B from T group by A | ||
| */ | ||
| private Map<Expression, Expression> getEncodeGroupByExpressions(LogicalAggregate<Plan> aggregate) { | ||
| Map<Expression, Expression> encodeGroupbyExpressions = Maps.newHashMap(); | ||
| for (Expression gb : aggregate.getGroupByExpressions()) { | ||
| Optional<Expression> encodeExpr = getEncodeExpression(gb); | ||
| encodeExpr.ifPresent(expression -> encodeGroupbyExpressions.put(gb, expression)); | ||
| } | ||
| return encodeGroupbyExpressions; | ||
| } | ||
|
|
||
| private LogicalAggregate<Plan> compressedMaterializeAggregate(LogicalAggregate<Plan> aggregate) { | ||
| Map<Expression, Expression> encodeGroupByExpressions = getEncodeGroupByExpressions(aggregate); | ||
| if (!encodeGroupByExpressions.isEmpty()) { | ||
| List<Expression> newGroupByExpressions = Lists.newArrayList(); | ||
| for (Expression gp : aggregate.getGroupByExpressions()) { | ||
| newGroupByExpressions.add(encodeGroupByExpressions.getOrDefault(gp, gp)); | ||
| } | ||
| List<NamedExpression> newOutputs = Lists.newArrayList(); | ||
| Map<Expression, Expression> decodeMap = new HashMap<>(); | ||
| for (Expression gp : encodeGroupByExpressions.keySet()) { | ||
| decodeMap.put(gp, new DecodeAsVarchar(encodeGroupByExpressions.get(gp))); | ||
| } | ||
| for (NamedExpression out : aggregate.getOutputExpressions()) { | ||
| Expression replaced = ExpressionUtils.replace(out, decodeMap); | ||
| if (out != replaced) { | ||
| if (out instanceof SlotReference) { | ||
| newOutputs.add(new Alias(out.getExprId(), replaced, out.getName())); | ||
| } else if (out instanceof Alias) { | ||
| newOutputs.add(((Alias) out).withChildren(replaced.children())); | ||
| } else { | ||
| // should not reach here | ||
| Preconditions.checkArgument(false, "output abnormal: " + aggregate); | ||
| } | ||
| } else { | ||
| newOutputs.add(out); | ||
| } | ||
| } | ||
| aggregate = aggregate.withGroupByAndOutput(newGroupByExpressions, newOutputs); | ||
| } | ||
| return aggregate; | ||
| } | ||
| } |
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24 changes: 24 additions & 0 deletions
24
.../java/org/apache/doris/nereids/trees/expressions/functions/scalar/EncodeStrToInteger.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| // 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.expressions.functions.scalar; | ||
|
|
||
| /** | ||
| * Encode_as_XXXInt | ||
| */ | ||
| public interface EncodeStrToInteger { | ||
| } |
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