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Posted to issues@spark.apache.org by "Gan Wei (Jira)" <ji...@apache.org> on 2020/02/21 06:37:00 UTC

[jira] [Comment Edited] (SPARK-18502) Spark does not handle columns that contain backquote (`)

    [ https://issues.apache.org/jira/browse/SPARK-18502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17041602#comment-17041602 ] 

Gan Wei edited comment on SPARK-18502 at 2/21/20 6:36 AM:
----------------------------------------------------------

Is there a resolution for this issue?

I am also encountering the same issue when selecting a column name containing backtick "`".
{code:java}
df.select("a`b`").show(1)
{code}
got error msg:
{code:java}
org.apache.spark.sql.AnalysisException: syntax error in attribute name
{code}


was (Author: wgan008):
Is there a resolution for this issue. I am also encountering the same issue when selecting a column name containing backtick "`" .
{code:java}
df.select("a`b`").show(1)
{code}
got error msg:
{code:java}
org.apache.spark.sql.AnalysisException: syntax error in attribute name
{code}

> Spark does not handle columns that contain backquote (`)
> --------------------------------------------------------
>
>                 Key: SPARK-18502
>                 URL: https://issues.apache.org/jira/browse/SPARK-18502
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Barry Becker
>            Priority: Minor
>              Labels: bulk-closed
>
> I know that if a column contains dots or hyphens we can put backquotes/backticks around it, but what if the column contains a backtick (`)? Can the back tick be escaped by some means?
> Here is an example of the sort of error I see
> {code}
> org.apache.spark.sql.AnalysisException: syntax error in attribute name: `Invoice`Date`;org.apache.spark.sql.catalyst.analysis.UnresolvedAttribute$.e$1(unresolved.scala:99) org.apache.spark.sql.catalyst.analysis.UnresolvedAttribute$.parseAttributeName(unresolved.scala:109) org.apache.spark.sql.catalyst.analysis.UnresolvedAttribute$.quotedString(unresolved.scala:90) org.apache.spark.sql.Column.(Column.scala:113) org.apache.spark.sql.Column$.apply(Column.scala:36) org.apache.spark.sql.functions$.min(functions.scala:407) com.mineset.spark.vizagg.vizbin.strategies.DateBinStrategy.getDateExtent(DateBinStrategy.scala:158) 
> {code}



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