Allison Wang created SPARK-36063:
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Summary: Optimize OneRowRelation subqueries
Key: SPARK-36063
URL: https://issues.apache.org/jira/browse/SPARK-36063
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 3.2.0
Reporter: Allison Wang
Inline subqueries with OneRowRelation as leaf nodes instead of decorrelating
and rewriting them as left outer joins.
Scalar subquery:
```
SELECT (SELECT c1) FROM t1 -> SELECT c1 FROM t1
```
Lateral subquery:
```
SELECT * FROM t1, LATERAL (SELECT c1, c2) -> SELECT c1, c2 , c1, c2 FROM t1
```
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