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object DatasetExtensions

Contains methods for manipulating spark dataframes and datasets.

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  1. implicit final class MMLDataFrame extends AnyVal

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  1. final def !=(arg0: Any): Boolean
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  9. def findUnusedColumnName(prefix: String, df: Dataset[_]): String
  10. def findUnusedColumnName(prefix: String, schema: StructType): String
  11. def findUnusedColumnName(prefix: String)(columnNames: Set[String]): String

    Finds an unused column name given initial column name and a list of existing column names.

    Finds an unused column name given initial column name and a list of existing column names. The unused column name will be given prefix with a number appended to it, eg "testColumn_5". There will be an underline between the column name and the number appended.

    returns

    The unused column name.

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