What is Wario dropping at the end of Super Mario Land 2 and why? As Power BI designers, we always put our focus on giving the best experience to the users that will interact with our dashboard and reports. Thanks for a great solution. These changes should be dynamically applied to all the created chart objects. The first 5 steps give my my column value (the publication year +1). Let's get started and learn how to rename columns like a pro in Power Query. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. If that is something else then you must use that step, e.g. Power BI. Each dynamic column value must have a corresponding dynamic column header. Dynamic Column Names in Power Query - Goodly This idea is described in details here Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Dynamically Changing the Field/Column Name Based on Value of Other Column, How a top-ranked engineering school reimagined CS curriculum (Ep. However, when you rename columns through some dynamic logic, this mechanism isn't triggered and the column references in reports are broken. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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Would there be a way to utilize a Switch or IF function for the name based on a slicer? This is so Power Query will generate the Table.RenameColumns() step for us and we will make minor tweaks. Hi, @MarcelBeug. Now we have this: Both the 2nd and 3rd column need to be renamed, and we cannot double-click to rename, otherwise the refresh will fail tomorrow when the date changes to Nov 21, 2020. Find out about what's going on in Power BI by reading blogs written by community members and product staff. In case you have any questions, please feel free to post them below! Efficiently rename columns with a function in Power BI and Power Query The second parameter, here, plays the main role. Looking at your first code in your reply, it looks like "Dimension" is the table in which the data is being pulled. Unless you have some complex requirements for the function to rename the columns, my solution here is overkill and too complex. {} is a syntax for creating a list object, and inside of that object, we added old and new column names separated with a comma. Many thanks for your help. Explanation ALLSELECTED is one of the most complex functions in DAX. Consider this very simple example: You receive this file every day, and the column name starting in Row 6, Column B, constantly changes. As you say, the replacement column names would need to be listed in the correct order within List2. 2) On the Add Column ribbon click Add Custom Column. Does the 500-table limit still apply to the latest version of Cassandra? The easiest way of drilling to a single column from a table and transforming it to a list is to write the name of the column inside of round brackets right after the expression that is returning a table. The keyword each is a sugar syntax for iterating function invoke that is holding a single underscore argument that is entering the function. The syntax for the function is: Table.TransformColumnNames (table as table, nameGenerator as function, optional options as nullable record) The first parameter is the table name. We can use a List in Power Query to make this dynamic. From the ribbon, click Add Column > Index Column (dropdown) > From 0. I have the exact same issue. There are three ways to rename a column in Power Query. Does the 500-table limit still apply to the latest version of Cassandra? Rename option in the Transform tab: In the Transform tab . this looks like a bug - you should send a frown" [2015], "Once the column name changes the report breaks because it's expecting the previous column name" [2017]. My knowledge is specifically with Power Query. Check this video if you want to do that to. If you have a date in your date model, you always need a good date table. Microsoft Power BI Learning Resources, 2023, Learn Power BI - Full Course with Dec-2022, with Window, Index, Offset, 100+ Topics, Formatted Profit and Loss Statement with empty lines, How to Get Your Question Answered Quickly. You can further enrich the function in case you need more control over the new column names. Asking for help, clarification, or responding to other answers. previous = measure. Just think about having to support 20 different languages, the report would rapidly turn into a nightmare. So for each row in a table, the underscore will push the currently iterating row old and new column name inside of the list structure that was introduced with the {} bracket syntax. The easiest way to rename a column in Power Query is to do it the same way you do in Excel - just double-click it and rename it. In this video, I take you through a quick tutorial to demonstrate how to set up dynamic columns in a table in Power BI. Rename columns - Power Query | Microsoft Learn How do I properly use table.group in a PowerQuery query to dynamically summarize different rows and columns? Is "I didn't think it was serious" usually a good defence against "duty to rescue"? It is nice to know the Table.TransformColumnNames function exists, but if you just have a straight column name switch then both Ivan and Carl's answers are much simpler. As the list of supported languages grows, more visualizations and bookmarks will need to be created, making it hard to scale in the long run. We can use a List in Power Query to make this dynamic. if it would have been #"Changed Type", then: The first #"Changed Type" is generated automatically, so you need to use this name in the adjusted formula. 1.) Thank you. In this article, we'll show you some simple and advanced techniques for replacing column names in bulk. Now all the needs to be done is to apply this zipped list . I am trying to dynamically rename a set of columns in Power Query, List1 being the original column names and List2 the new column names. In my example we can switch in a slicer between Money and Volumes. We can transform rows from a table to a record type using the curly brackets syntax.On the other hand, we transform tables to lists by writing the name of the column in round brackets.If we were to combine round and curly brackets, we would drill into a single cell from that table (picture below). Why typically people don't use biases in attention mechanism? We also get your email address to automatically create an account for you in our website. Details: List. Using the general approach of demoting headers -> transposing tables -> cleaning the first column -> transposing again was not an option because files were big, therefore double transpose would take forever to process. As always, set the data types for all columns at this point too now that we know what our column names will be. In the CleanColumnNames step we called the table as it was at the source step (before we created the nested lists step), and as a second argument to the Table.RenameColumns() function we provided the nested lists applied step. COMMENTS? We have a simple report that shows some useful insights about US states: So far so good, but it turns out that this report will be consumed by several people from around the globe, whose mother tongue isnt necessarily English. Now fetch the names that are currently applicable to the columns. In all other rows, it returns errors. "When you rename a column in the Query Editor of Power BI.., it implicitly triggers the column references in your reports to be updated. Table indexing starts from 0, so running this expression will yield the following record. From basic find and replace to more complex formulas, we've got you covered. when i select a month from slicer , i want to see my meaure "revenue" with the month name from slicer. Youll find me here: Linkedin https://goo.gl/3VW6Ky Twitter @curbalen, @ruthpozuelo Facebook https://goo.gl/bME2sB#CURBAL #SUBSCRIBE Making statements based on opinion; back them up with references or personal experience. Receiving an adequate list argument for the Table.RenameColumns() function was the harder part of development. I currently have a table like the one below (I know it's kind of odd logic): I would like to have the columns instead show the following: Since the data source I get this from automatically changes the first five columns to the appropriate year, I was hoping I could set the "Value" columns to have dynamic names based on the values found in the first five columns. If we want to make our rename columns function dynamic we need to alter the nested lists argument so that it accepts wrong and correct column names for each column. Now, lets focus on the formula bar, specifically each keyword. Notice the Index column has values 0, 1, 2 repeating. For example, the Dynamic column header with a data role index of 1 will be linked to the Dynamic column value that has a data role index of 1: Once we create the custom visual, its time to go back to the report. If I change the underlying sql script so that the column names are changed dynamically at the start of every month then it won't refresh because the same column names cannot be found by next month in the displayed table. Does anyone know a good workaround to preserve column references in the visuals after applying such a bulk rename step? Some issues: For simplicity, I've hard coded the 5, but if your table can change (such that the columns you need to rename may not always be the last 5), then a more dynamic approach might be something like: oldNames = List.Select (Table.ColumnNames (someTable), each Text.EndsWith (_, " Value")). 565), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. I would like to dynamically change my column headers using that Excel table without the need to go throu. When I rename columns it breaks the tables I have made. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Create dynamic format strings for measures in Power BI Desktop - Power BI the Renamed columns1 step seems like it should work, but then it throws the error. Dynamically change column names in Power Query using - antmanbi Lets analyze the Visualizations pane: This data role will contain only a single field and thats the ID. Since the export was scheduled to run every day, it would be a nightmare to have to manually find all column name misspells and correct them. 1- Assign index to each rows using Index column under Power Query Editor. If we try to change the column names manually, this is the code we get: Now, if we focus on the second argument of the Table.RenameColumns() function, we can see that it is returning a nested list of lists! with Power BI reports and Excel pivot tables! So it sounds like a strange request to me, but if you think something should be possible, I think you'd better start a new topic. For this scenario, we will implement the following ones: The association between the dynamic column values and dynamic column headers will be done through their data role index. Copy. It certainly looks a lot simpler than my solution! Fortunately, theres a better option to the one described above. rev2023.5.1.43404. Once again, manually rename the headers. This is how the final product looks: Both the source code of the custom visual and the sample report can be found in this public repository along side with more technical details about how this demonstration was achieved. A minor scale definition: am I missing something? The preview window now looks like this. R1-6 represent their spend classification in text in regards to the current Month - For example today's date is 4th of May, 2020 then R1 represent Classifications in April and R2 for March etc etc. The column you are selecting can be your primary key or unique key. Right-click the column of your choice: A contextual menu is displayed and you can select the Rename option to rename the selected column. Does a password policy with a restriction of repeated characters increase security? Is there a way to dynamically identify and expand an embedded table's columns? We have only a single table argument entering our function (TableWithDirtyNames). All we need do is create a connection to SQL Server and import the FactInternetSales table to Power BI as seen below. This way we are making the code easier to maintain and change in case we need to add more transformation logic to the new column names. There was no predictable logic on where it could introduce additional characters in the export. For instance, State column will have its header defined by State Title field, since both share the same order, which is 1.