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[fix](Nereids)Fix the bug that count(*) does not push down for tables with only one column. (#25222)

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after pr #22115 .

Fixed the bug that when selecting count(*) from table, if the table has only one column, the aggregate count is not pushed down.
This commit is contained in:
daidai
2023-10-11 10:17:30 -05:00
committed by GitHub
parent d1f59a4025
commit 9a4baf7ccf
3 changed files with 110 additions and 0 deletions
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1
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/RuleType.java
View File

@ -342,6 +342,7 @@ public enum RuleType {
LOGICAL_ASSERT_NUM_ROWS_TO_PHYSICAL_ASSERT_NUM_ROWS(RuleTypeClass.IMPLEMENTATION),
STORAGE_LAYER_AGGREGATE_WITHOUT_PROJECT(RuleTypeClass.IMPLEMENTATION),
STORAGE_LAYER_AGGREGATE_WITH_PROJECT(RuleTypeClass.IMPLEMENTATION),
STORAGE_LAYER_AGGREGATE_WITHOUT_PROJECT_FOR_FILE_SCAN(RuleTypeClass.IMPLEMENTATION),
STORAGE_LAYER_AGGREGATE_WITH_PROJECT_FOR_FILE_SCAN(RuleTypeClass.IMPLEMENTATION),
COUNT_ON_INDEX(RuleTypeClass.IMPLEMENTATION),
COUNT_ON_INDEX_WITHOUT_PROJECT(RuleTypeClass.IMPLEMENTATION),

7
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/implementation/AggregateStrategies.java
View File

@ -161,6 +161,13 @@ public class AggregateStrategies implements ImplementationRuleFactory {
return storageLayerAggregate(agg, project, olapScan, ctx.cascadesContext);
})
),
RuleType.STORAGE_LAYER_AGGREGATE_WITHOUT_PROJECT_FOR_FILE_SCAN.build(
logicalAggregate(
logicalFileScan()
)
.when(agg -> agg.isNormalized() && enablePushDownNoGroupAgg())
.thenApply(ctx -> storageLayerAggregate(ctx.root, null, ctx.root.child(), ctx.cascadesContext))
),
RuleType.STORAGE_LAYER_AGGREGATE_WITH_PROJECT_FOR_FILE_SCAN.build(
logicalAggregate(
logicalProject(