frompyspark.sql.functionsimportcol,expr,when,udffromurllib.parseimporturlparse# Define a UDF (User Defined Function) to extract the domaindefextract_domain(url):ifurl.startswith('http'):returnurlparse(url).netlocreturnNone# Register the UDF with Sparkextract_domain_udf=udf(extract_domain)# Featur...
Delta Lake provides programmatic APIs to conditional update, delete, and merge (this command is commonly referred to as an upsert) data into tables. Python fromdelta.tablesimport*frompyspark.sql.functionsimport* delta_table = DeltaTable.forPath(spark, delta_table_path) del...
In this blog post, we'll dive into PySpark's orderBy() and sort() functions, understand their differences, and see how they can be used to sort data in DataFrames.
from delta.tables import * from pyspark.sql.functions import * delta_table = DeltaTable.forPath(spark, delta_table_path) delta_table.update( condition = expr("id % 2 == 0"), set = { "id": expr("id + 100") }) delta_table.toDF().show() Results in:...