XieJiann commented on code in PR #15479:
URL: https://github.com/apache/doris/pull/15479#discussion_r1059810215
##########
fe/fe-core/src/test/java/org/apache/doris/nereids/rules/mv/SelectMvIndexTest.java:
##########
@@ -760,7 +760,7 @@ public void testBitmapUnionInSubquery() throws Exception {
createMv(createUserTagMVSql);
String query = "select user_id from " + USER_TAG_TABLE_NAME + " where
user_id in (select user_id from "
+ USER_TAG_TABLE_NAME + " group by user_id having
bitmap_union_count(to_bitmap(tag_id)) >1 ) ;";
- testMvWithTwoTable(query, "user_tags", "user_tags_mv");
+ testMvWithTwoTable(query, "user_tags_mv", "user_tags");
Review Comment:
Because we generate bucket join. The join order in the new plan is changed:
```
---------------------------------------------------new
plan---------------------------------------------------
PhysicalHashJoin ( type=LEFT_SEMI_JOIN, hashJoinCondition=[(user_id#1 =
user_id#5)], otherJoinCondition=[], stats=(rows=1, width=2, penalty=0.0) )
|--PhysicalProject ( projects=[user_id#1], stats=(rows=1, width=1,
penalty=0.0) )
| +--PhysicalOlapScan ( qualified=default_cluster:db1.user_tags,
output=[time_col#0, user_id#1, user_name#2, tag_id#3], stats=(rows=1, width=1,
penalty=0.0) )
+--PhysicalDistribute ( distributionSpec=DistributionSpecReplicated,
stats=(rows=1, width=1, penalty=1.0) )
+--PhysicalProject ( projects=[user_id#5], stats=(rows=1, width=1,
penalty=1.0) )
+--PhysicalFilter (
predicates=(bitmap_union_count(to_bitmap(cast(tag_id as VARCHAR(*))))#8 > 1),
stats=(rows=1, width=1, penalty=1.0) )
+--PhysicalHashAggregate ( aggPhase=LOCAL, aggMode=INPUT_TO_RESULT,
maybeUseStreaming=false, groupByExpr=[user_id#5], outputExpr=[user_id#5,
bitmap_union_count(to_bitmap(cast(tag_id as VARCHAR(*)))#9) AS
`bitmap_union_count(to_bitmap(cast(tag_id as VARCHAR(*))))`#8],
partitionExpr=Optional[[user_id#5]], requireProperties=[DistributionSpecHash (
orderedShuffledColumns=[5], shuffleType=AGGREGATE, tableId=-1, partitionIds=[],
equivalenceExprIds=[[5]], exprIdToEquivalenceSet={5=0} ) Order: ([])],
stats=(rows=1, width=1, penalty=1.0) )
+--PhysicalDistribute ( distributionSpec=DistributionSpecHash (
orderedShuffledColumns=[5], shuffleType=ENFORCED, tableId=-1, partitionIds=[],
equivalenceExprIds=[[5]], exprIdToEquivalenceSet={5=0} ), stats=(rows=1,
width=1, penalty=0.0) )
+--PhysicalProject ( projects=[user_id#5,
mv_bitmap_union_tag_id#10 AS `to_bitmap(cast(tag_id as VARCHAR(*)))`#9],
stats=(rows=1, width=1, penalty=0.0) )
+--PhysicalOlapScan (
qualified=default_cluster:db1.user_tags, output=[time_col#4, user_id#5,
user_name#6, tag_id#7], stats=(rows=1, width=1, penalty=0.0) )
---------------------------------------------------old
plan---------------------------------------------------
PhysicalHashJoin ( type=RIGHT_SEMI_JOIN, hashJoinCondition=[(user_id#1 =
user_id#5)], otherJoinCondition=[], stats=(rows=1, width=2, penalty=0.0) )
|--PhysicalProject ( projects=[user_id#5], stats=(rows=1, width=1,
penalty=1.0) )
| +--PhysicalFilter ( predicates=(bitmap_union_count(to_bitmap(cast(tag_id
as VARCHAR(*))))#8 > 1), stats=(rows=1, width=1, penalty=1.0) )
| +--PhysicalHashAggregate ( aggPhase=LOCAL, aggMode=INPUT_TO_RESULT,
maybeUseStreaming=false, groupByExpr=[user_id#5], outputExpr=[user_id#5,
bitmap_union_count(to_bitmap(cast(tag_id as VARCHAR(*)))#9) AS
`bitmap_union_count(to_bitmap(cast(tag_id as VARCHAR(*))))`#8],
partitionExpr=Optional[[user_id#5]], requireProperties=[DistributionSpecHash (
orderedShuffledColumns=[5], shuffleType=AGGREGATE, tableId=-1, partitionIds=[],
equivalenceExprIds=[[5]], exprIdToEquivalenceSet={5=0} ) Order: ([])],
stats=(rows=1, width=1, penalty=1.0) )
| +--PhysicalDistribute ( distributionSpec=DistributionSpecHash (
orderedShuffledColumns=[5], shuffleType=ENFORCED, tableId=-1, partitionIds=[],
equivalenceExprIds=[[5]], exprIdToEquivalenceSet={5=0} ), stats=(rows=1,
width=1, penalty=0.0) )
| +--PhysicalProject ( projects=[user_id#5,
mv_bitmap_union_tag_id#10 AS `to_bitmap(cast(tag_id as VARCHAR(*)))`#9],
stats=(rows=1, width=1, penalty=0.0) )
| +--PhysicalOlapScan (
qualified=default_cluster:db1.user_tags, output=[time_col#4, user_id#5,
user_name#6, tag_id#7], stats=(rows=1, width=1, penalty=0.0) )
+--PhysicalDistribute ( distributionSpec=DistributionSpecHash (
orderedShuffledColumns=[1], shuffleType=ENFORCED, tableId=-1, partitionIds=[],
equivalenceExprIds=[[1]], exprIdToEquivalenceSet={1=0} ), stats=(rows=1,
width=1, penalty=0.0) )
+--PhysicalProject ( projects=[user_id#1], stats=(rows=1, width=1,
penalty=0.0) )
+--PhysicalOlapScan ( qualified=default_cluster:db1.user_tags,
output=[time_col#0, user_id#1, user_name#2, tag_id#3], stats=(rows=1, width=1,
penalty=0.0) )
```
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