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Refactored Dataframe join comment to use correct parameter ordering #4847

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Refactored Dataframe join comment to use correct parameter ordering #4847

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Updated comments use correct sample code for Dataframe joins
Mar 2, 2015
ebc1efa
Merge pull request #1 from peerside/peerside-patch-1
Mar 2, 2015
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4 changes: 2 additions & 2 deletions sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -337,11 +337,11 @@ class DataFrame protected[sql](
* {{{
* // Scala:
* import org.apache.spark.sql.functions._
* df1.join(df2, "outer", $"df1Key" === $"df2Key")
* df1.join(df2, $"df1Key" === $"df2Key", "outer")
*
* // Java:
* import static org.apache.spark.sql.functions.*;
* df1.join(df2, "outer", col("df1Key") === col("df2Key"));
* df1.join(df2, col("df1Key") === col("df2Key"), "outer");
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actually while you are at it, do you mind fixing the java example? it definitely wouldn't work with col("df1key") === col("df2key").

I think you need col("df1Key").equalTo(col("df2Key"))

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I'll make this change while merging.

* }}}
*
* @param right Right side of the join.
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