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https://issues.apache.org/jira/browse/SPARK-30249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16997774#comment-16997774
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Hyukjin Kwon commented on SPARK-30249:
--------------------------------------
It seems to be valid in Parquet:
{code}
scala> Seq(1).toDF("a:b").write.parquet("/tmp/foo")
scala> spark.read.parquet("/tmp/foo").show()
+---+
|a:b|
+---+
| 1|
+---+
{code}
> Invalid Column Names in parquet tables should not be allowed
> ------------------------------------------------------------
>
> Key: SPARK-30249
> URL: https://issues.apache.org/jira/browse/SPARK-30249
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Rakesh Raushan
> Priority: Minor
>
> Column names such as `a:b` , `??`, `,,`, `^^` , `++`etc are allowed when we
> are creating parquet tables.
> While when we are creating tables with `orc` all such column names are marked
> as invalid and analysis exception is thrown.
> These column names should also be not allowed for parquet tables as well.
> Also this induces inconsistency between column names for Parquet and ORC
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