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https://issues.apache.org/jira/browse/SPARK-7149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14525065#comment-14525065
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Apache Spark commented on SPARK-7149:
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User 'haiyangsea' has created a pull request for this issue:
https://github.com/apache/spark/pull/5861
> 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(value, 0, 2), 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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