PYSpark DataFrame

https://www.cnblogs.com/liaowuhen1314/p/12792202.html

https://www.cnblogs.com/wonglu/p/8390710.html

https://iowiki.com/pyspark/pyspark_index.html

http://codingdict.com/article/8882

https://blog.exxactcorp.com/the-benefits-examples-of-using-apache-spark-with-pyspark-using-python/

https://beginnersbug.com/window-function-in-pyspark-with-example/

https://sparkbyexamples.com/pyspark-tutorial/

https://www.yuque.com/7125messi/ouk92x/azx1n6

https://spark-test.github.io/pyspark-coverage-site/pyspark_sql_functions_py.html

https://www.manongdao.com/q-1345185.html

 https://spark-test.github.io/pyspark-coverage-site/pyspark_sql_functions_py.html

pyspark.sql.functions.window函数的'startTime'参数和window.start有什么关系？

https://www.thinbug.com/q/48351951

https://stackoverflow.com/questions/47277097/how-to-understand-the-result-of-the-spark-sql-window-function?rq=1

https://stackoverflow.com/questions/48351951/what-does-the-pyspark-sql-functions-window-functions-starttime-argument-do-an