How to Update a Column in Pyspark while doing Multiple Joins? Question: I have a SQL query which I am trying to convert into PySpark. In SQL query, we are joining three tables and updating a column where condition is matching. The SQL query looks like this: UPDATE [DEPARTMENT_DATA] INNER JOIN [COLLEGE_DATA] INNER JOIN [STUDENT_TABLE] …
How to compare date(different format) from a list of Variables in Python Question: I need to extract the string variable with latest timestamp from a list. The variables are in below format: |Name| |:—| |First_Record2022-10-11_NameofRecord.txt| |Second_Record_20221017.txt| for now, i am fetching this in a list and iterating in a for loop to get the latest …
How to filter out values in Pyspark using multiple OR Condition? Question: I am trying to change a SQL query into Pyspark. The SQL Query looks like this. I need to set ZIPCODE=’0′ where the below conditions satisfies. UPDATE COUNTRY_TABLE SET COUNTRY_TABLE.ZIPCODE = "0" WHERE (((COUNTRY_TABLE.STATE)="TN" Or (COUNTRY_TABLE.STATE)="DEL" Or (COUNTRY_TABLE.STATE)="UK" Or (COUNTRY_TABLE.STATE)="UP" Or (COUNTRY_TABLE.STATE)="HP" Or …
Unable to execute Databricks REST API for data copy using Python Question: When i am executing the below code to "copy data from databricks –> local" its failing with an error. Can anyone please help me with how to solve this error. import os from databricks_cli.sdk.api_client import ApiClient from databricks_cli.dbfs.api import DbfsApi from databricks_cli.dbfs.dbfs_path import …
object of type rdd is not json serializable python spark Question: I am using spark data bricks cluster in azure, my requirement is to generate json and save json file to databricks storage But I am getting below error object of type rdd is not json serializable code: df = spark.read.format("csv") .option("inferSchema", False) .option("header", True) …
PySpark convert column with lists to boolean columns Question: I have a PySpark DataFrame like this: Id X Y Z 1 1 1 one,two,three 2 1 2 one,two,four,five 3 2 1 four,five And I am looking to convert the Z-column into separate columns, where the value of each row should be 1 or 0 based …
Why pyspark converting string date values to null? Question: Question: Why the myTimeStampCol1 in the following code is returning a null value in the third row, and how can we fix the issue? from pyspark.sql.functions import * df=spark.createDataFrame(data = [ ("1","Arpit","2021-07-24 12:01:19.000"),("2","Anand","2019-07-22 13:02:20.000"),("3","Mike","11-16-2021 18:00:08")], schema=["id","Name","myTimeStampCol"]) df.select(col("myTimeStampCol"),to_timestamp(col("myTimeStampCol"),"yyyy-MM-dd HH:mm:ss.SSSS").alias("myTimeStampCol1")).show() Output +——————–+——————-+ |myTimeStampCol | myTimeStampCol1| +——————–+——————-+ |2021-07-24 12:01:…|2021-07-24 …
Does Pyspark Pandas support Pandas pct_change function? Question: I saw that pct_change function is partially implemented with the missing of some parameters. https://spark.apache.org/docs/latest/api/python/user_guide/pandas_on_spark/supported_pandas_api.html Yet, when I tried data_pd = data.toPandas data_pd.pct_change() , there was AttributeError: ‘function’ object has no attribute ‘pct_change’ I want to know whether it is not implemented yet. If no, what is …
How can I use bamboolib in Databricks? Question: I would like to automatically do Exploratory Data Analysis using Azure Databricks, and I have seen the potential it has as shown for example in this post: https://towardsdatascience.com/the-easy-way-to-do-data-exploration-22b4b8e1dc20 But when following the same steps in Databricks the extension is not enabled. I have tested something like this: …
Check if two dataframes have the same values in the column using .isin in koalas dataframe Question: I am having a small issue in comparing two dataframes and the dataframes are detailed as below. The dataframes detailed below are all in koalas. import databricks.koalas as ks mini_team_df_1 = ks.DataFrame([‘0000340b’], columns = [‘team_code’]) mini_receipt_df_2 = ks.DataFrame([‘0000340b’], …
