dharadhruve
dharadhruve
/ flatten.java
Last active
July 18, 2019 08:15
— forked from ebuildy/flatten.java
Flatten Spark data frame fields structure, via SQL in Java. This fork also supports ArrayType fields.
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| class Toto | |
| { | |
| public void Main() | |
| { | |
| final DataFrame source = GetDataFrame(); | |
| final String querySelectSQL = flattenSchema(source.schema(), null); | |
| source.registerTempTable("source"); | |
| final DataFrame flattenData = sqlContext.sql("SELECT " + querySelectSQL + " FROM source") |