Wenchen Fan created SPARK-20292:
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Summary: string representation of TreeNode is messy
Key: SPARK-20292
URL: https://issues.apache.org/jira/browse/SPARK-20292
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.2.0
Reporter: Wenchen Fan
Currently we have a lot of string representations for QueryPlan/Expression:
toString, simpleString, verboseString, treeString, sql, etc.
The logic between them is not very clear and as a result,
{{Expression.treeString}} is mostly unreadable as it contains a lot duplicated
information.
We should clean it up
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