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How Can I Combine(Concatenate) Two Data Frames with the Same Column Name in Java

James H. Sterling • • 1 min read
How Can I Combine(Concatenate) Two Data Frames with the Same Column Name in Java

Can I append a dataframe to the right of other dataframe having same column names

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1 Answer

You can join two dataframes like this.

df1.join(df2, df1.col("column").equalTo(df2("column")));

If you are looking for Union, then you can do something like this.

df1.unionAll(df2);  // spark 1.6

Spark 2.0, unionAll was renamed to union

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James H. Sterling
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James H. Sterling

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.