Sun Rui created SPARK-12338:
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Summary: Support dropping duplicated rows on selected columns in
DataFrame in R style
Key: SPARK-12338
URL: https://issues.apache.org/jira/browse/SPARK-12338
Project: Spark
Issue Type: New Feature
Components: SparkR
Affects Versions: 1.5.2
Reporter: Sun Rui
in R, unique() can drop duplicated rows on all columns. And something like
{code}
df[!duplicated(df[,c('x1', 'x2')]),]
{code}
is used to drop duplicated rows on selected columns. It's better that my can
support duplicated(), and subsetting a DataFrame using the result of
duplicated().
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