SOGM'S Data

SPARK DataFrame 조작 모음 from pyspark.sql import SparkSession from pyspark.sql import Row from pyspark.sql import functions as func spark = SparkSession.builder.appName("FriendsByAge").getOrCreate() lines = spark.read.option("header", "true").option("inferSchema", "true").csv("file:///SparkCourse/fakefriends-header.csv") # Select only age and numFriends columns friendsByAge = lines.select("age", "f..