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https://issues.apache.org/jira/browse/SPARK-5278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14279892#comment-14279892
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Apache Spark commented on SPARK-5278:
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User 'cloud-fan' has created a pull request for this issue:
https://github.com/apache/spark/pull/4068
> ambiguous reference to fields in Spark SQL is incompleted
> ---------------------------------------------------------
>
> Key: SPARK-5278
> URL: https://issues.apache.org/jira/browse/SPARK-5278
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Wenchen Fan
>
> at hive context
> for json string like
> {code}{"a": {"b": 1, "B": 2}}{code}
> The SQL `SELECT a.b from t` will report error for ambiguous reference to
> fields.
> But for json string like
> {code}{"a": [{"b": 1, "B": 2}]}{code}
> The SQL `SELECT a[0].b from t` will pass and pick the first `b`
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