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

["Takeshi Yamamuro (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-18502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15697210#comment-15697210 ] 

Takeshi Yamamuro commented on SPARK-18502:
------------------------------------------

Please give us a simple query to reproduce this?
I tried a simple query though, the query passed;
{code}
scala> val df = Seq(("a", 1), ("b", 2), ("c", 1), ("d", 5)).toDF("`k`ey`", "value")
df: org.apache.spark.sql.DataFrame = [`k`ey`: string, value: int]

scala> df.show
+------+-----+
|`k`ey`|value|
+------+-----+
|     a|    1|
|     b|    2|
|     c|    1|
|     d|    5|
+------+-----+
{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
>
> 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}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org