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[feature](Nereids): eliminate semi join (#28588)
Eliminate Semi/Anti Join which is FALSE or TRUE.
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70 changes: 70 additions & 0 deletions
70
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/EliminateSemiJoin.java
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| @@ -0,0 +1,70 @@ | ||
| // 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. | ||
|
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| package org.apache.doris.nereids.rules.rewrite; | ||
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| import org.apache.doris.nereids.rules.Rule; | ||
| import org.apache.doris.nereids.rules.RuleType; | ||
| import org.apache.doris.nereids.trees.expressions.Expression; | ||
| import org.apache.doris.nereids.trees.expressions.StatementScopeIdGenerator; | ||
| import org.apache.doris.nereids.trees.expressions.literal.BooleanLiteral; | ||
| import org.apache.doris.nereids.trees.plans.JoinType; | ||
| import org.apache.doris.nereids.trees.plans.logical.LogicalEmptyRelation; | ||
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| import java.util.List; | ||
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| /** | ||
| * Eliminate Semi/Anti Join which is FALSE or TRUE. | ||
| */ | ||
| public class EliminateSemiJoin extends OneRewriteRuleFactory { | ||
| @Override | ||
| public Rule build() { | ||
| return logicalJoin() | ||
| // right will be converted to left | ||
| .when(join -> join.getJoinType().isLeftSemiOrAntiJoin()) | ||
| .when(join -> join.getHashJoinConjuncts().isEmpty()) | ||
| .then(join -> { | ||
| List<Expression> otherJoinConjuncts = join.getOtherJoinConjuncts(); | ||
| JoinType joinType = join.getJoinType(); | ||
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| boolean condition; | ||
| if (otherJoinConjuncts.isEmpty()) { | ||
| condition = true; | ||
| } else if (otherJoinConjuncts.size() == 1) { | ||
| if (otherJoinConjuncts.get(0).equals(BooleanLiteral.TRUE)) { | ||
| condition = true; | ||
| } else if (otherJoinConjuncts.get(0).equals(BooleanLiteral.FALSE)) { | ||
| condition = false; | ||
| } else { | ||
| return null; | ||
| } | ||
| } else { | ||
| return null; | ||
| } | ||
| if (joinType == JoinType.LEFT_SEMI_JOIN && condition | ||
| || (joinType == JoinType.LEFT_ANTI_JOIN && !condition)) { | ||
| return join.left(); | ||
| } else if (joinType == JoinType.LEFT_SEMI_JOIN && !condition | ||
| || (joinType == JoinType.LEFT_ANTI_JOIN && condition)) { | ||
| return new LogicalEmptyRelation(StatementScopeIdGenerator.newRelationId(), join.getOutput()); | ||
| } else { | ||
| throw new IllegalStateException("Unexpected join type: " + joinType); | ||
| } | ||
| }) | ||
| .toRule(RuleType.ELIMINATE_SEMI_JOIN); | ||
| } | ||
| } |
96 changes: 96 additions & 0 deletions
96
fe/fe-core/src/test/java/org/apache/doris/nereids/rules/rewrite/EliminateSemiJoinTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| // 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. | ||
|
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| package org.apache.doris.nereids.rules.rewrite; | ||
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| import org.apache.doris.nereids.util.MemoPatternMatchSupported; | ||
| import org.apache.doris.nereids.util.PlanChecker; | ||
| import org.apache.doris.utframe.TestWithFeService; | ||
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| import org.junit.jupiter.api.Test; | ||
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| class EliminateSemiJoinTest extends TestWithFeService implements MemoPatternMatchSupported { | ||
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| @Override | ||
| protected void runBeforeAll() throws Exception { | ||
| createDatabase("test"); | ||
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| connectContext.setDatabase("test"); | ||
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| createTable("CREATE TABLE t (" | ||
| + "id int not null" | ||
| + ")\n" | ||
| + "DISTRIBUTED BY HASH(id)\n" | ||
| + "BUCKETS 1\n" | ||
| + "PROPERTIES(\n" | ||
| + " \"replication_num\"=\"1\"\n" | ||
| + ");"); | ||
| } | ||
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| @Test | ||
| void semiTrue() { | ||
| String sql = "select * from t t1 left semi join t t2 on true"; | ||
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| PlanChecker.from(connectContext) | ||
| .analyze(sql) | ||
| .rewrite() | ||
| .matches( | ||
| logicalResultSink( | ||
| logicalOlapScan() | ||
| ) | ||
| ); | ||
| } | ||
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| @Test | ||
| void semiFalse() { | ||
| String sql = "select * from t t1 left semi join t t2 on false"; | ||
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| PlanChecker.from(connectContext) | ||
| .analyze(sql) | ||
| .rewrite() | ||
| .matches( | ||
| logicalEmptyRelation() | ||
| ); | ||
| } | ||
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| @Test | ||
| void antiTrue() { | ||
| String sql = "select * from t t1 left anti join t t2 on true"; | ||
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| PlanChecker.from(connectContext) | ||
| .analyze(sql) | ||
| .rewrite() | ||
| .matches( | ||
| logicalEmptyRelation() | ||
| ); | ||
| } | ||
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| @Test | ||
| void antiFalse() { | ||
| String sql = "select * from t t1 left anti join t t2 on false"; | ||
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| PlanChecker.from(connectContext) | ||
| .analyze(sql) | ||
| .rewrite() | ||
| .matches( | ||
| logicalResultSink( | ||
| logicalOlapScan() | ||
| ) | ||
| ); | ||
| } | ||
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| } |