Real move on Data Lake using Rest API on ADF

There are many times where I’ve needed to move a file using Azure’s Data Factory and found it weird that the only native option provided is to copy the file, then delete it. Many reading know that disk level renames are actually almost instantaneous (just a rewrite the the files metadata / partition tree). A…

Bug – Synapse SqlPool Language and dates

We found this interesting bug on Dedicated SQL Pool when working with British style language. If you use Dynamic SQL to change the language, then selects on the date fail with a conversion error, but prints work. Weird… An example repro is below If you use a hard coded language statement as opposed to dynamic,…

SqlDW / Synapse – TABLE Variable Compatibility

Azure Synapse SQL does not support the the use of TABLE variable. Therefore a workaround is to use Temporary Tables in SqlDW. If we run the below statement in Synapse SQL then it willa throw syntax error as below: Alternative solution to achive the same goal as Table Variable in SqlDW / Synapse SQL is…

Enabling Managed Identity Authentication on Azure Functions in Data Factory

This blog shows you how to enable Managed Identity on an Azure Function call from ADF, this can help secure the Function by adding a second authentication method on top of the API Key. Enabling these options enforces https on all function calls, ADF handles authentication and so no custom headers, tokens or keys are…

Import Json using SQL Dedicated Pool in Azure Synapse Analytics (SQLDW)

This blog shows how to easily Extract Json and XML objects and Arrays into SQDW using COPY INTO SQLDW is a bit behind other vendors like snowflake when it comes to being able to query Json natively off a data lake as they have native support. To get around this we simply load the Json…

Bob Duffy – User Group and Event Sessions for 2022

If you are running a SQL/Data User group or event I’m always happy to do a 50-60 minute virtual talk. Let me know bob@prodata.ie or @bob_duffy on twitter. 2022 Session Options 01. SqlPool Maintenance Fundamentals SQL Pools now support auto create status. But they do not support auto update stats and don’t quite have the…

SQL Storage Fundamentals for Azure VMs

Thx to anyone looking at my session at #SsqlBits on SQL Storage fundamentals for Azure VMs. Here is a copy of my slide deck if you want to see any of the links or content.

Meta data Automation at SqlBits 2022

The absolute key to getting agility and extensibility in a data warehouse project is a good meta data based automation framework and tools, regardless of whether you are using TSQL, Pool, Databricks and/or Python. If you are coming to SqlBits 2022, then there are a few sessions touching on this subjects. Full Schedule on this…

Selecting the right Azure VM for SQL

When looking for the right VM for SQL we need to look at a lot of factors, but mainly these four factors Throughput of VM (Cached and Uncached)Cores AvailableVM Memory GNCost per month (compute and SQL license) This can be difficult to do as may current tools to pick a VM don’t easily allow you…

Power BI- Data Connectivity Modes

Import Data This connection means that Power BI will cache the data meaning Pulling data from Data Source and into Power BI Desktop File. Advantages: Caching the data makes you take full advantage of Vertipaq Engine. Report Performance will be better using Import.Able to Use full capabilities of Power BI using relationship types, M and…

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