Beginning Apache Spark 3 Pdf -

Run with:

from pyspark.sql.functions import udf def squared(x): return x * x beginning apache spark 3 pdf

squared_udf = udf(squared, IntegerType()) df.withColumn("squared_val", squared_udf(df.value)) Run with: from pyspark

df.createOrReplaceTempView("sales") result = spark.sql("SELECT region, COUNT(*) FROM sales WHERE amount > 1000 GROUP BY region") This makes Spark accessible to analysts familiar with SQL. 4.1 Reading and Writing Data Supported formats: Parquet, ORC, Avro, JSON, CSV, text, JDBC, and more. COUNT(*) FROM sales WHERE amount &gt