pyspark中的dataframe应用

0. 官网： http://spark.apache.org/docs/latest/api/python/pyspark.sql.html#module-pyspark.sql.functions

1. pyspark之Dataframe操作（二）https://blog.csdn.net/hejp_123/article/details/88033133

2. PySpark︱DataFrame操作指南：增/删/改/查/合并/统计与数据处理 https://blog.csdn.net/sinat_26917383/article/details/80500349

3. Spark-SQL之DataFrame操作大全

https://blog.csdn.net/dabokele/article/details/52802150

4. Complete Guide on DataFrame Operations in PySpark https://www.analyticsvidhya.com/blog/2016/10/spark-dataframe-and-operations/