lincoln-lil commented on a change in pull request #15117:
URL: https://github.com/apache/flink/pull/15117#discussion_r594205345
##########
File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/plan/nodes/calcite/Expand.scala
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@@ -59,10 +60,13 @@ abstract class Expand(
if (projects.size() <= 1) {
return litmus.fail("Expand should output more than one rows, otherwise
use Project.")
}
- if (projects.exists(_.size != outputRowType.getFieldCount)) {
+ if (null == outputFieldNames) {
+ return litmus.fail("Expand should have none empty output field names.")
+ }
Review comment:
make sense
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