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new 582ad779609 [fix](Nereids) rewritten mv should check output set and
should not return null (#34288)
582ad779609 is described below
commit 582ad779609a564dbe335daafa043cf6c91f518b
Author: morrySnow <101034200+morrys...@users.noreply.github.com>
AuthorDate: Mon Apr 29 19:33:48 2024 +0800
[fix](Nereids) rewritten mv should check output set and should not return
null (#34288)
1. we should check output set, since we will remove top project and
result output size will diff with its child output size if there are
dup slot in result list
2. should not return null, instead we should return rewritten plan
itself, because we will use return result in many place and do not
check null at all
---
.../doris/nereids/rules/exploration/mv/MaterializedViewUtils.java | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/MaterializedViewUtils.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/MaterializedViewUtils.java
index eb7d07c2310..6863a7e01b1 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/MaterializedViewUtils.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/MaterializedViewUtils.java
@@ -203,9 +203,8 @@ public class MaterializedViewUtils {
CascadesContext cascadesContext,
Function<CascadesContext, Plan> planRewriter,
Plan rewrittenPlan, Plan originPlan) {
- List<Slot> originOutputs = originPlan.getOutput();
- if (originOutputs.size() != rewrittenPlan.getOutput().size()) {
- return null;
+ if (originPlan.getOutputSet().size() !=
rewrittenPlan.getOutputSet().size()) {
+ return rewrittenPlan;
}
// After RBO, slot order may change, so need
originSlotToRewrittenExprId which record
// origin plan slot order
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