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Hello. Do you know if you can add columns at a specific position (before / after a column) by altering a delta table ?
yes, using the FIRST or AFTER parameter.https://docs.databricks.com/en/sql/language-manual/sql-ref-syntax-ddl-alter-table-manage-column.html#add-column
I want to pass multiple column as argument to pivot a dataframe in pyspark pivot likemydf.groupBy("id").pivot("day","city").agg(F.sum("price").alias("price"),F.sum("units").alias("units")).show(). One way I found is to create multiple df with differ...
We are currently upgrading our Lakehouse to use the Unity Catalog benefits. We will mostly use external tables because alle our DETLA tables are already stored in Azure Storage. I try to figure out how to update the table property "delta.lastUpdateve...
I am in the same boat.That is the reason I opted to use managed tables instead. OK; it means migrating tables and changing notebooks but besides not having to struggle with external tables, you also get something in return (liquid clustering f.e.).
Hi Team,Could you please help me with best practices to move and deploy (code, workspace, notebooks, etc) in the prod?Regards,Phanindra
the most important is to use Repos!Link your workspace with git and use feature branches and pull requests to promote code/notebooks.Check the databricks docs on Repos. If you have further questions; shoot.
Hi Team, We would like to define the archival strategy for data. Could you please share best practices /guide me on the below are the 3 use cases Case-1: On-Prem SQL and Oracle Data which is more than 20 years and they wanted to bring them into clou...
case 1: I'd extract the data from the db to a data lake (cold storage if that is possible, that is cheaper) using an ETL tool like Data Factory, Glue etc. Then the archiving can take place. Perhaps also create a backup of the data on a 2nd data lak...
Hi Team, could you please share or guide us on any checklist/best practices for Databricks setup/deployment?
Hi @Phani1 , here are some best practices https://github.com/Azure/AzureDatabricksBestPractices/tree/master and you could take these points as your "checklist".Choose the right Databricks Workspace:Decide on the appropriate Azure region for your Data...
As far as I understand, Delta Live Tables should now support reading data from an external location, but I can’t get it to work. I’ve added an ADLS container to Unity Catalog as an external location. There’s a folder in the container containing an ex...
I misspelled the folder name; I got it working now The error message could have been more informative
Hi everyone,I am working on a project that requires highly performant pipelines for managing data ingestion, validation, and processing large data volumes from IOT devices.I am interested in knowing:- The best way to ingest from EventHub/Kafka sinks-...
I am trying to get sample papers for Databricks Certified Associate Developer for Apache Spark 3.0 - Python before I attempt my exam
Hi, there, This exam has a Practice Exam, I think that's what you are looking for.
How can we do infrastructure reverse engineering in Databricks? Any kind of solution accelerator or tool that can scan through the environment and identify the solutions /components that are used in the Databricks environment and the complexity withi...
Hi Team,Could you please help us on this.Regards,Phanindra
Hi Team, What I experienced today from the proctor was so not nice, my experience with proctor today was very frustrating and pathetic, I was taking my assessment today 11-26-2023, 2pm, I was already on between question 22nd to 25th when my assessmen...
@osalawu Sorry to hear you had an issue with your exam. In order to protect your Webassessor account information, please file a ticket with our support team. Please include your Webassessor login ID, the exam, and a couple of dates and times that wil...
Hi Everyone,Hope everyone is enjoying their holiday time.I have spark streaming job (copy activity from location A to location B) and a Query Listener and attached to the streaming job.As mentioned over the attachments I can see numInputRows gets log...
On Databricks created a job task with task type as Python script from s3. However, when arguments are passed via Parameters option, running into unrecognized arguments' error.Code in s3 file:import argparse def parse_arguments(): parser = argpar...
I’m currently trying to create a Foreign Catalog based on a Connection object of type SQLSERVER. This would allow me to directly access our on-premises MS SQL database from within Azure Databricks using Unity Catalog.As I’m part of a large organizati...
