haiyang created SPARK-7149:
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Summary: Defalt system alias problem
Key: SPARK-7149
URL: https://issues.apache.org/jira/browse/SPARK-7149
Project: Spark
Issue Type: Bug
Components: SQL
Reporter: haiyang
Fix default system alias problem.
execute the sql statement will cause problem:
select substr(concat('value', value), 1, 3), key as c0 from testData order by c0
org.apache.spark.sql.AnalysisException: Reference 'c0' is ambiguous, could be:
c0#42, c0#41.;
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