PySpark: multiple conditions in when clause - Stack Overflow
Jun 8, 2016 · when in pyspark multiple conditions can be built using &(for and) and | (for or). Note:In pyspark t is important to enclose every expressions within parenthesis () that combine …
Spark: subtract two DataFrames - Stack Overflow
Apr 9, 2015 · In PySpark it would be subtract. df1.subtract(df2) or exceptAll if duplicates need to be preserved.
pyspark - How to check if spark dataframe is empty ... - Stack …
Sep 22, 2015 · Right now, I have to use df.count > 0 to check if the DataFrame is empty or not. But it is kind of inefficient. Is there any better way to do that? PS: I want to check if it's empty …
pyspark - How to use AND or OR condition in when in Spark
pyspark.sql.functions.when takes a Boolean Column as its condition. When using PySpark, it's often useful to think "Column Expression" when you read "Column". Logical operations on …
Manually create a pyspark dataframe - Stack Overflow
Sep 16, 2019 · I am trying to manually create a pyspark dataframe given certain data: row_in = [(1566429545575348), (40.353977), (-111.701859)] rdd = sc.parallelize(row_in) schema = …
pyspark - get all the dates between two dates in Spark DataFrame ...
Aug 8, 2018 · As long as you're using Spark version 2.1 or higher, you can exploit the fact that we can use column values as arguments when using pyspark.sql.functions.expr(): Create a …
Pyspark: display a spark data frame in a table format
spark.conf.set("spark.sql.execution.arrow.pyspark.enabled", "true") For more details you can refer to my blog post Speeding up the conversion between PySpark and Pandas DataFrames Share
spark dataframe drop duplicates and keep first - Stack Overflow
Aug 1, 2016 · Question: in pandas when dropping duplicates you can specify which columns to keep. Is there an equivalent in Spark Dataframes? Pandas: df.sort_values('actual_datetime', …
PySpark: How to fillna values in dataframe for specific columns?
Jul 12, 2017 · PySpark how to create a column based on rows values. 0. Fill column value based on join in Pyspark ...
pyspark - Fetch week start date and week end date from Date
Jul 15, 2020 · I need to fetch week start date and week end date from a given date, taking into account that the week starts from Sunday and ends on Saturday. I referred this post but this …