Kikyou1997 commented on code in PR #11964: URL: https://github.com/apache/doris/pull/11964#discussion_r954451674
########## fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/logical/PruneOlapScanPartition.java: ########## @@ -0,0 +1,166 @@ +// 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.rewrite.logical; + +import org.apache.doris.analysis.LiteralExpr; +import org.apache.doris.catalog.OlapTable; +import org.apache.doris.catalog.PartitionInfo; +import org.apache.doris.catalog.PartitionItem; +import org.apache.doris.catalog.PartitionType; +import org.apache.doris.nereids.rules.Rule; +import org.apache.doris.nereids.rules.RuleType; +import org.apache.doris.nereids.rules.rewrite.OneRewriteRuleFactory; +import org.apache.doris.nereids.trees.expressions.ComparisonPredicate; +import org.apache.doris.nereids.trees.expressions.EqualTo; +import org.apache.doris.nereids.trees.expressions.Expression; +import org.apache.doris.nereids.trees.expressions.GreaterThan; +import org.apache.doris.nereids.trees.expressions.GreaterThanEqual; +import org.apache.doris.nereids.trees.expressions.LessThan; +import org.apache.doris.nereids.trees.expressions.LessThanEqual; +import org.apache.doris.nereids.trees.expressions.Or; +import org.apache.doris.nereids.trees.expressions.SlotReference; +import org.apache.doris.nereids.trees.expressions.literal.Literal; +import org.apache.doris.nereids.trees.plans.logical.LogicalFilter; +import org.apache.doris.nereids.trees.plans.logical.LogicalOlapScan; +import org.apache.doris.nereids.util.ExpressionUtils; +import org.apache.doris.nereids.util.Utils; +import org.apache.doris.planner.ColumnBound; +import org.apache.doris.planner.ColumnRange; +import org.apache.doris.planner.PartitionPruner; +import org.apache.doris.planner.RangePartitionPrunerV2; +import org.apache.doris.planner.ScanNode.ColumnRanges; + +import com.google.common.collect.Lists; +import com.google.common.collect.Maps; +import com.google.common.collect.Range; + +import java.util.Collection; +import java.util.List; +import java.util.Map; +import java.util.Set; + +/** + * Used to prune partition of olap scan, should execute after SwapProjectAndFilter, MergeConsecutiveFilters, + * MergeConsecutiveProjects and all predicate push down related rules. + */ +public class PruneOlapScanPartition extends OneRewriteRuleFactory { + + @Override + public Rule build() { + return logicalFilter(logicalOlapScan()).thenApply(ctx -> { + LogicalFilter<LogicalOlapScan> filter = ctx.root; + LogicalOlapScan scan = filter.child(); + Expression predicate = filter.getPredicates(); + List<Expression> expressionList = ExpressionUtils.extractConjunction(predicate); + OlapTable table = scan.getTable(); + Set<String> partitionColumnNameSet = Utils.execWithReturnVal(table::getPartitionColumnNames); + PartitionInfo partitionInfo = table.getPartitionInfo(); + // TODO: 1. support grammar: SELECT * FROM tbl PARTITION(p1,p2) + // 2. support list partition + if (partitionColumnNameSet.isEmpty() || !partitionInfo.getType().equals(PartitionType.RANGE)) { + return ctx.root; + } + // TODO: Process all partition column for now, better to process required column only. + Map<String, ColumnRange> columnNameToRange = Maps.newHashMap(); + for (String colName : partitionColumnNameSet) { + ColumnRange columnRange = createColumnRange(colName, expressionList); + columnNameToRange.put(colName, columnRange); + } + + Map<Long, PartitionItem> keyItemMap = partitionInfo.getIdToItem(false); + PartitionPruner partitionPruner = new RangePartitionPrunerV2(keyItemMap, + partitionInfo.getPartitionColumns(), columnNameToRange); + Collection<Long> selectedPartitionId = Utils.execWithReturnVal(partitionPruner::prune); + scan.getSelectedPartitionIds().retainAll(selectedPartitionId); + return ctx.root; + }).toRule(RuleType.PARTITION_PRUNE); + } + + private ColumnRange createColumnRange(String colName, List<Expression> expressionList) { + ColumnRange result = ColumnRange.create(); + for (Expression expression : expressionList) { + Expression leftMostChild = expression.leftMostNode(); + if (!(leftMostChild instanceof SlotReference)) { + continue; + } + SlotReference slotRef = (SlotReference) leftMostChild; + if (!slotRef.boundToColumn(colName)) { + continue; + } + if (expression instanceof Or) { + ColumnRanges ranges = exprToRanges(expression, colName); + switch (ranges.type) { + case IS_NULL: + result.setHasConjunctiveIsNull(true); + break; + case CONVERT_SUCCESS: + result.intersect(ranges.ranges); + break; + case CONVERT_FAILURE: + default: + break; + } + } else { + ColumnRanges ranges = exprToRanges(expression, colName); + switch (ranges.type) { + case IS_NULL: + result.setHasConjunctiveIsNull(true); + break; + case CONVERT_SUCCESS: + result.intersect(ranges.ranges); + break; + case CONVERT_FAILURE: + default: + break; + } + } + } + return result; + } + + private ColumnRanges exprToRanges(Expression expression, String colName) { + // TODO: process in/is null expression Review Comment: It's determined on how the the partition is set for tpch table. -- This is an automated message from the Apache Git Service. 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