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https://issues.apache.org/jira/browse/SPARK-5278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan updated SPARK-5278:
-------------------------------
Description:
for json string like
{"a": {"b": 1, "B": 2}}
The SQL `SELECT a.b from t` will report error for ambiguous reference to fields.
But for json string like
{"a":[{"b": 1, "B": 2}]}
The SQL `SELECT a[0].b from t` will pass and pick the first `b`
was:
for json string like
{"a":[
{
"b": 1,
"B": 2
}
}
The SQL `SELECT a.b from t` will report error for ambiguous reference to fields.
But for json string like
{"a":[
{
"b": 1,
"B": 2
}]
}
The SQL `SELECT a[0].b from t` will pass and pick the first `b`
> 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
>
> for json string like
> {"a": {"b": 1, "B": 2}}
> The SQL `SELECT a.b from t` will report error for ambiguous reference to
> fields.
> But for json string like
> {"a":[{"b": 1, "B": 2}]}
> The SQL `SELECT a[0].b from t` will pass and pick the first `b`
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