924060929 commented on code in PR #18863:
URL: https://github.com/apache/doris/pull/18863#discussion_r1172551986
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalProject.java:
##########
@@ -82,7 +83,10 @@ private LogicalProject(List<NamedExpression> projects,
List<NamedExpression> exc
Optional<GroupExpression> groupExpression,
Optional<LogicalProperties> logicalProperties,
CHILD_TYPE child, boolean isDistinct) {
super(PlanType.LOGICAL_PROJECT, groupExpression, logicalProperties,
child);
- this.projects = ImmutableList.copyOf(Objects.requireNonNull(projects,
"projects can not be null"));
+ Preconditions.checkArgument(projects != null, "projects can not be
null");
+ this.projects = projects.isEmpty()
+ ?
ImmutableList.of(ExpressionUtils.selectMinimumColumn(child.getOutput()))
Review Comment:
child maybe unbound, so selectMinimumColumn() at this place could failed
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