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https://issues.apache.org/jira/browse/SPARK-51744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jarno Rajala updated SPARK-51744:
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External issue URL: (was: https://github.com/apache/spark/pull/33950)
> Columns with spaces cannot be aliased or used in expressions when
> quotedRegexColumnNames=true
> ---------------------------------------------------------------------------------------------
>
> Key: SPARK-51744
> URL: https://issues.apache.org/jira/browse/SPARK-51744
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.3.2, 3.5.0
> Reporter: Jarno Rajala
> Priority: Minor
>
> When {{{}spark.sql.parser.quotedRegexColumnNames=true{}}}, the following
> query fails:
> {{select `X Y` as xy from (select 1 as `X Y`)}}
> giving the error message
> {{[INVALID_USAGE_OF_STAR_OR_REGEX] Invalid usage of regular expression 'X Y'
> in expression `alias`. SQLSTATE: 42000}}
> Similar errors occur with other expressions like {{{}`X Y`/2{}}}. This
> severely restricts use of columns with spaces when
> {{{}quotedRegexColumnNames=true{}}}.
> There are many ways that this could be fixed.
> I would suggest at least that backticked columns not be treated as regexes if
> they do not contain any regex tokens.
> This issue is related to SPARK-36698. That issue is a feature request and not
> specifically about column names with spaces. However, the proposed PR would
> presumably fix this issue as well.
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