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https://issues.apache.org/jira/browse/SPARK-7860?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li resolved SPARK-7860.
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Resolution: Won't Fix
> Spark SQL join two table with different datatype compare condition
> ------------------------------------------------------------------
>
> Key: SPARK-7860
> URL: https://issues.apache.org/jira/browse/SPARK-7860
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.3.1
> Environment: linux
> Reporter: guofeng
>
> as below,Select expression's join condition is age compare with name,but age
> is Int,name is String,this codition dosen't make sense
> // Apply a schema to an RDD of Java Beans and register it as a table.
> DataFrame schemaPeople = sqlContext.createDataFrame(people,
> Person.class);
> schemaPeople.registerTempTable("people");
> DataFrame schemaPeople1 = sqlContext.createDataFrame(people,
> Person.class);
> schemaPeople.registerTempTable("people1");
> // SQL can be run over RDDs that have been registered as tables.
> DataFrame teenagers = sqlContext.sql("SELECT a.name FROM people a
> join people1 b on a.name = b.age");
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