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johnb1
Contributor II
since ‎11-30-2022
Monday

User Stats

  • 30 Posts
  • 0 Solutions
  • 18 Kudos given
  • 5 Kudos received

User Activity

Materialized Views - Strange Difference in Refresh Performance

2 weeks ago
I have built the same materialized view twice with only one difference: mv01 does incremental refresh and mv02 does full refresh.The mv reads from 7 tables and 1 mv, performs unions, joins, anti-joins as well as filters, and calculates columns on the...

Materialized View with Incremental Refresh - Change Data Feed required on source tables?

3 weeks ago
Question:To create a materialized view with incremental refresh, is the Delta Lake feature Change Data Feed required on all of the source tables that the materialized view consumes? Or, is it not required for the creation of the materialized view, bu...

Programatically remove external table completely (Azure)

10-22-2024
Hi!I have created external tables with data stored in an Azure storage account.Is there a way to not only drop the tables but also remove the underlying folder in the storage account which contains the table's data? I want to do this from Databricks ...

Access Git folder information from notebook

09-28-2024
In my Workspace, I have a repository with Git folder.I would like to access programatically with Python from within a notebook:- name of the repo- currently checked out branch in the repoI want to do this in two different ways:(1) Access said informa...

SQL UDF vs. Python UDF, SQL UDF vs. Pandas UDF

09-24-2024
I would like to understand how(1) SQL UDFs compare to Python UDFs(2) SQL UDFs compare to Pandas UDFsEspecially in terms of performance.I cannot find any documentation on the topics, also not in the official Databricks documentation (which unfortunate...
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