本文整理了Java中org.apache.spark.sql.functions.sqrt()方法的一些代码示例，展示了functions.sqrt()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。functions.sqrt()方法的具体详情如下：
包路径：org.apache.spark.sql.functions
类名称：functions
方法名：sqrt

functions.sqrt介绍

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代码示例

代码示例来源：origin: org.datavec/datavec-spark_2.11

/**
 * Standard deviation for a column
 *
 * @param dataFrame  the dataframe to
 *                   get the column from
 * @param columnName the name of the column to get the standard
 *                   deviation for
 * @return the column that represents the standard deviation
 */
public static Column std(DataRowsFacade dataFrame, String columnName) {
  return functions.sqrt(var(dataFrame, columnName));
}

代码示例来源：origin: org.datavec/datavec-spark

/**
 * Standard deviation for a column
 *
 * @param dataFrame  the dataframe to
 *                   get the column from
 * @param columnName the name of the column to get the standard
 *                   deviation for
 * @return the column that represents the standard deviation
 */
public static Column std(DataRowsFacade dataFrame, String columnName) {
  return functions.sqrt(var(dataFrame, columnName));
}