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org.apache.spark.ml.adapter

SchemaUtils

object SchemaUtils

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  4. def appendColumn(schema: StructType, colName: String, dataType: DataType, nullable: Boolean = false): StructType

    Appends a new column to the input schema.

    Appends a new column to the input schema. This fails if the given output column already exists

    schema

    input schema

    colName

    new column name. If this column name is an empty string "", this method returns the input schema unchanged. This allows users to disable output columns.

    dataType

    new column data type

    returns

    new schema with the input column appended

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