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Forum Posts

shadowinc
by Visitor
  • 44 Views
  • 0 replies
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spark/databricks temporary views and uuid

Hi All,We have a table which has an id column generated by uuid(). For ETL we use databricks/spark sql temporary views. we observed strange behavior between databricks sql temp view (create or replace temporary view) and spark sql temp view (df.creat...

Data Engineering
Databricks SQL
spark sql
temporary views
uuid
  • 44 Views
  • 0 replies
  • 0 kudos
as999
by New Contributor III
  • 7389 Views
  • 8 replies
  • 4 kudos

Databrick hive metastore location?

In databrick, where is hive metastore location is it control plane or data plane? for prod systems In terms of security what preventions should be taken to secure hive metastore?

  • 7389 Views
  • 8 replies
  • 4 kudos
Latest Reply
Prabakar
Esteemed Contributor III
  • 4 kudos

@as999​ The default metastore is managed by Databricks. If you are concerned about security and would like to have your own metastore you can go for the external metastore setup. You have the details steps in the below doc for setting up the external...

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7 More Replies
MarkusFra
by New Contributor II
  • 995 Views
  • 3 replies
  • 0 kudos

Re-establish SparkSession using Databricks connect after cluster restart

Hello,when developing locally using Databricks connect how do I re-establish the SparkSession when the Cluster restarted? getOrCreate() seems to get the old invalid SparkSession even after Cluster restart instead of creating a new one or am I missing...

Data Engineering
databricks-connect
  • 995 Views
  • 3 replies
  • 0 kudos
Latest Reply
Michael_Chein
  • 0 kudos

If anyone encounters this problem, the solution that worked for me was to restart the Jupyter kernel. 

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2 More Replies
dbengineer516
by New Contributor
  • 107 Views
  • 1 replies
  • 0 kudos

/api/2.0/preview/sql/queries API only returning certain queries

Hello,When using /api/2.0/preview/sql/queries to list out all available queries, I noticed that certain queries were being shown while others were not. I did a small test on my home workspace, and it was able to recognize certain queries when I defin...

  • 107 Views
  • 1 replies
  • 0 kudos
Latest Reply
brockb
New Contributor III
  • 0 kudos

Hi,How many queries were returned in the API call in question? The List Queries documentation describes this endpoint as supporting pagination with a default page size of 25, is that how many you saw returned? Query parameters page_size integer <= 10...

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prabhu26
by New Contributor
  • 82 Views
  • 1 replies
  • 0 kudos

Unable to enforce schema on data read from jsonl file in Azure Databricks using pyspark

I'm tring to build a ETL pipeline in which I'm reading the jsonl files from the azure blob storage, then trying to transform and load it to delta tables in databricks. I have created the below schema for loading my data :  schema = StructType([ S...

  • 82 Views
  • 1 replies
  • 0 kudos
Latest Reply
DataEngineer
New Contributor II
  • 0 kudos

Try this.Add option("multiline","true")

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MarkD
by New Contributor II
  • 427 Views
  • 8 replies
  • 0 kudos

SET configuration in SQL DLT pipeline does not work

Hi,I'm trying to set a dynamic value to use in a DLT query, and the code from the example documentation does not work.SET startDate='2020-01-01'; CREATE OR REFRESH LIVE TABLE filtered AS SELECT * FROM my_table WHERE created_at > ${startDate};It is g...

Data Engineering
Delta Live Tables
dlt
sql
  • 427 Views
  • 8 replies
  • 0 kudos
Latest Reply
Hkesharwani
Contributor
  • 0 kudos

Hi @MarkD ,You may use  set variable_name.var= '1900-01-01'to set the value of variable and in order to use the value of variable use ${automated_date.var} Example: set automated_date.var= '1800-01-01' select * from my table where date = CAST(${autom...

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pshuk
by New Contributor III
  • 150 Views
  • 2 replies
  • 1 kudos

upload file/table to delta table using CLI

Hi,I am using CLI to transfer local files to Databricks Volume. At the end of my upload, I want to create a meta table (storing file name, location, and some other information) and have it as a table on databricks Volume. I am not sure how to create ...

  • 150 Views
  • 2 replies
  • 1 kudos
Latest Reply
Ayushi_Suthar
Honored Contributor
  • 1 kudos

Hi @pshuk , Greetings!  We understand that you are looking for a CLI command to create a Table but at this moment Databricks doesn't support CLI command to create the table but you can use SQL Execution API -https://docs.databricks.com/api/workspace/...

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1 More Replies
JOFinancial
by New Contributor
  • 55 Views
  • 1 replies
  • 0 kudos

No Data for External Table from Blob Storage

Hi All,I am trying to create an external table from a Azure Blob storage container.  I recieve no errors, but there is no data in the table.  The Blob Storage contains 4 csv files with the same columns and about 10k rows of data.  Am I missing someth...

  • 55 Views
  • 1 replies
  • 0 kudos
Latest Reply
Hkesharwani
Contributor
  • 0 kudos

Hi, The code looks completely fine. please check if you have any other delimiter other than , .If your CSV files use a different delimiter, you can specify it in the table definition using the OPTIONS clause.Just to confirm I created a sample table a...

  • 0 kudos
TinasheChinyati
by New Contributor
  • 1780 Views
  • 2 replies
  • 0 kudos

Is databricks capable of housing OLTP and OLAP?

Hi data experts.I currently have an OLTP (Azure SQL DB) that keeps data only for the past 14 days. We use Partition switching to achieve that and have an ETL (Azure data factory) process that feeds the Datawarehouse (Azure Synapse Analytics). My requ...

  • 1780 Views
  • 2 replies
  • 0 kudos
Latest Reply
ChrisCkx
New Contributor II
  • 0 kudos

Hi @Kaniz I have looked at this topic extensively and have even tried to implement it.I am a champion of databricks at my organization, but I do not think that it currently enables the OLTP scenarios.The closest I have gotten to it is by using the St...

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dbal
by New Contributor III
  • 523 Views
  • 2 replies
  • 0 kudos

withColumnRenamed does not work with databricks-connect 14.3.0

I am not able to run our unit tests suite due a possible bug in the databricks-connect library. The problem is with the Dataframe transformation withColumnRenamed. When I run it in a Databricks cluster (Databricks Runtime 14.3 LTS), the column is ren...

dbal_3-1715382511871.png dbal_4-1715382516217.png dbal_1-1715383269610.png
  • 523 Views
  • 2 replies
  • 0 kudos
Latest Reply
shan_chandra
Esteemed Contributor
  • 0 kudos

@dbal - can you please try withColumnsRenamed() instead Reference: https://docs.databricks.com/en/release-notes/dbconnect/index.html#databricks-connect-1430-python

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Sushmg
by New Contributor
  • 1067 Views
  • 1 replies
  • 0 kudos

Call rest api

Hi there is requirements to create a pipeline that calls api and store that data in datawarehouse. Can you suggest me the best way to do this

  • 1067 Views
  • 1 replies
  • 0 kudos
Latest Reply
Kaniz
Community Manager
  • 0 kudos

Hi @Sushmg, Please refer to the Databricks documentation and resources for more detailed instructions and examples.

  • 0 kudos
Dhruv-22
by New Contributor III
  • 31 Views
  • 0 replies
  • 0 kudos

NamedStruct fails in the 'IN' query

I've posted the same question on stackoverflow (link) as well. I will post any solution I get there.I was trying to understand using many columns in the IN query and came across this statement. SELECT (1, 2) IN (SELECT c1, c2 FROM VALUES(1, 2), (3, 4...

  • 31 Views
  • 0 replies
  • 0 kudos
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