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Day: April 16, 2024

Estimating Chi-Square Parameters with R

Steven Sanderson performs a test:

In the world of statistics and data analysis, understanding and accurately estimating the parameters of probability distributions is crucial. One such distribution is the chi-square distribution, often encountered in various statistical analyses. In this blog post, we’ll dive into how we can estimate the degrees of freedom (“df”) and the non-centrality parameter (“ncp”) of a chi-square distribution using R programming language.

Read on to learn more about the process of estimation while I grumble something about Bayesian analysis being better.

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Resetting the sa Password in SQL Server on Linux

Vlad Drumea blames the intern:

This is pretty useful if you’ve inherited a SQL Server instance running on Linux, but the last person™ didn’t bother saving the sa password in your teams password manager vault.
Or, if you’re like me, and spin up test instances with random passwords for sa that you don’t bother saving anywhere.

Click through to see where you can find out how to reset the password, and then the actual mechanics of password reset.

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Using a Snake Draft Order in SQL Server

Aaron Bertrand makes use of an ordering:

In my previous post, I showed how to borrow a snake draft concept from fantasy football, or a packing technique from the shipping industry, to distribute different portions of a workload to run in parallel. In the previous example, we determined a distribution order for databases based on size – though you can rank by literally any attribute (or combination of attributes). Once we’ve determined how to build out this order, we may want to store that data somewhere because, sometimes, the source of that data is not directly accessible.

Read on for tips on storing the results in a table, querying the results, and using them to drive SQL Agent jobs.

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Mirroring Snowflake to Microsoft Fabric

Reza Rad hogs the photocopier:

Microsoft Fabric offers an end-to-end SaaS analytics solution; however, the world is using all kinds of data sources in its implementation. Mirroring is a new functionality in Fabric that allows customers to keep their data wherever they are, but then they can use Fabric analytics solutions with the same speed and performance as if their data were in Fabric. Best of all, this won’t cost extra. If you wonder what it is and how it works, read this article.

Click through for the video and article.

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Documenting Table Columns with the Python SDK for Purview

Danaraj Ram Kumar breaks out the Python IDE:

There are several approaches to work with Microsoft Purview entities programmatically, especially when needing to perform bulk operations such as documenting a large number of tables and columns dynamically. 

This article shows how to use the Python SDK for Purview to programmatically document Purview table columns in bulk – assuming there are many tables and columns that needed to be automatically documented based off a reference tables – as in this example, the data dictionary maintained in Excel.

On the other hand, Purview REST APIs can be used to natively work with the REST APIs whereas the Python SDK for Purview is a wrapper that makes it easier to programmatically interacts with the Purview Atlas REST APIs in the backend.

Click through for sample code and explanations.

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Deploying SSIS Components using Custom Components

Andy Brownsword forgets something at home:

Within SSIS you can make use of custom components which aren’t present out of the box. An example of some would be the Azure Feature Pack if you’re working with cloud resources.

These will let us use features not available natively. They can also provide a challenge down the line when we come to deploy changes to the project.

Here we’ll look at an example of this challenge, how to troubleshoot, and ultimately resolve the issue.

Read on for the scenario and fix.

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