[jira] [Resolved] (SPARK-7551) Don't split by dot if within backticks for DataFrame attribute resolution

["Reynold Xin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-7551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reynold Xin resolved SPARK-7551.
--------------------------------
       Resolution: Fixed
    Fix Version/s: 1.4.0

> Don't split by dot if within backticks for DataFrame attribute resolution
> -------------------------------------------------------------------------
>
>                 Key: SPARK-7551
>                 URL: https://issues.apache.org/jira/browse/SPARK-7551
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Reynold Xin
>            Assignee: Wenchen Fan
>            Priority: Critical
>             Fix For: 1.4.0
>
>
> DataFrame's resolve:
> {code}
>   protected[sql] def resolve(colName: String): NamedExpression = {
>     queryExecution.analyzed.resolve(colName.split("\\."), sqlContext.analyzer.resolver).getOrElse {
>       throw new AnalysisException(
>         s"""Cannot resolve column name "$colName" among (${schema.fieldNames.mkString(", ")})""")
>     }
>   }
> {code}
> We should not split the parts quoted by backticks (`).
> For example, `ab.cd`.`efg` should be split into two parts "ab.cd" and "efg". 



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