Reynold Xin created SPARK-13135:
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             Summary: Don't print expressions recursively in generated code
                 Key: SPARK-13135
                 URL: https://issues.apache.org/jira/browse/SPARK-13135
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Reynold Xin
            Assignee: Reynold Xin


Our code generation currently prints expressions recursively. For example, for 
expression "(1 + 1) + 1)", we would print the following:

"(1 + 1) + 1)"
"(1 + 1)"
"1"
"1"

We should just print the project list once.




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