Posts

There’s not an official function to calculate workdays in Databricks. Here are some solutions. Having a DimCalendar with holidays and at least Databricks Runtime 12 If you have a DimCalendar in the system you can now do LEFT LATERAL JOIN without the correlated subquery errors when using non-equality predicates. Check SPARK-36114 for more details. Calculating working days is then as simple as run a query like: SELECT mt.StartDate, mt.EndDate, dc.Workdays FROM myTable mt LEFT JOIN LATERAL (SELECT COUNT(DateKey) - 1 AS Workdays FROM dimCalendar dc WHERE mt.StartDate <= dc.DateKey AND mt.EndDate >= dc.Datekey AND dc.IsDayWeekDay = TRUE AND dc.IsDayHoliday = FALSE ) If this query is slow, please check if the data types for the dates columns match. All are DATE or all are TIMESTAMP. If the sluginess remains check if any of the fields are not part of the statistics of the table. ...

A while ago I’ve received an email from Jason Alvarez asking me if I knew a way to change Power Query connections inside an Excel file. The problem is similar to my previous post on Mass changing pivot table connection strings in Excel using PowerShell. Turns out you can and he was able to find this solution: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 #root path to the collection of excel docs: $rootPath = "C:\Temp\PowerQueryDemo\" #Current query file path: $currentPath = "C:\Temp\PowerQueryDemo\" #Updated query file path: $newPath = "C:\Temp\PowerQueryDemo\PowerQueryNewSource" Get-ChildItem -Path $rootPath -Recurse -Include *.xlsx | ForEach-Object{ $docPath = $_.FullName ## Create an instance of excel: $ExcelAppInstance = New-Object -ComObject "Excel.Application" $ExcelAppInstance.Visible = $false ## Open the workbook object within our Excel instance: $workbook = $ExcelAppInstance.workbooks.Open($docPath) ##iterate the list of queries embedded in the workbook, ##updating the file path to our new one: $workbook.Queries | ForEach-Object{ Write-Output $_.Formula Write-output $_.Formula.replace($xPath,$tPath) $_.Formula = $_.Formula.replace($xPath,$tPath) } $workbook.Save() $workbook.Close() $ExcelAppInstance.Quit() } The key here is the Queries property inside the Workbook object. ...

Yesterday I had the pleasure to be back to in-person to give a small fun presentation about bending Power BI to help us solve Wordle puzzles. The content is in Portuguese but I will upload an English version during this week. Here’s the link on GitHub where you can download the file: https://github.com/fpvmorais/presentations If you have any questions please reach me. Have fun!

While creating a new machine to be the Integration Runtime for Purview and after I have installed the mandatory JRE that allows the connection to Snowflake I kept getting this error: Error: (3913) JavaException: Must have Java 8 or newer installed. This puzzled me because I had installed version 17. Started troubleshooting and followed this guide to check if the installation was correct. Everything seemed alright but the error was still there. ...

Here are some tips of the things I’ve learned while creating them. App Plan If you already have an Windows ‘App Service Plan’ you’ll need a different one for running Python. You can’t host Linux and Windows apps in the same resource group. If you have an existing resource group named AzureFunctionsQuickstart-rg with a Windows function app or web app, you must use a different resource group. Python version If you need to use ‘azure-identity’ you’ll need to use python 3.8 instead of the 3.9 otherwise you’ll get: ...

There’s a lot to chew while unit testing Azure Functions. I going to be quite liberal with the terminology because technically some of this will be in fact integration testing and not unit testing per se. Either way, Azure Functions load the local.settings.json on startup, creating several environment variables that then we can use in our code. In C# we would access them like so: tenantId = configRoot["TenantId"]; appId = configRoot["AppId"]; or in Python: ...

As I explained in a previous post about Purview with the official Snowflake connector you need to create a scan per database/schema pair. In the customer where I was working there are a few hundred databases plus their schemas. Doing this by using the UI would mean that we will be wasting a lot of time clicking away and be prone to forget some database/schema pair. I’ve explored the documentation about the Scans - REST API and the rest of this post is just some PowerShell code to automate the creation of scans and their schedules in Purview. ...

A few days ago I had to add a new team member to more that 50 workspaces. I started dying inside just thinking of going to each workspace and add it using the portal ui. Here’s a little snippet that saved me a few hundred clicks: Login-PowerBI $workspaces = Get-PowerBIWorkSpace $user = "mySpecial.User@MyDomain.com" foreach($workspace in $workspaces) { Write-Host "Adding User to : " $workspace.Name try { Add-PowerBIWorkspaceUser -Id $workspace.Id -UserPrincipalName $user -AccessRight Member } catch { Write-Host "Message: [$($_.Exception.Message)"] -ForegroundColor Red } } Adapt it to your needs. ...

In the last few weeks I’ve been working with Purview doing some code to integrate Snowflake entities because there wasn’t an official connector. You can imagine my surprise when I’ve noticed last friday that there’s a new unannounced preview connector that does the work for us. PyApacheAtlas If you already read or watched something about the recommended way to create custom entities on Purview you have heard something about this library. ...

There’s now an official connector to Google Spreadsheets on Power BI With the November 2021 Power BI release, came the official connector support for Google Spreadsheets from Microsoft. As such there’s no more need for my custom connector. The repository on GitHub is now archived. No more Relationship tag contains incorrect attribute. Line 2, position 86 During the last week I’ve tested it so see if it had the same limitations as mine had and I’m happy to report the XML errors when trying to import data from a Google Sheet with a pivot table don’t occur in the new one. No more having to create a proxy file and use the IMPORTRANGE function. ...