something like "revenue June 2018 ". Does the 500-table limit still apply to the latest version of Cassandra? i am exactly looking for this solution. 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. 3- Create relationship between both datasets on the basis of Index. 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. (adsbygoogle = window.adsbygoogle || []).push({}); Support only Import mode, it will not work with Direct Query Mode, reason behind when you transform the columns it will switch your dataset as in Import Mode. How do I stop the Flickering on Mode 13h? SOUTHWORKS Development on Demand is the new model for nearshore software development. The easiest way is to create some base code in M by double clicking the column header and change the name in just something. I would like to dynamically change my column headers using that Excel table without the need to go throu. Once again, manually rename the headers. Effect of a "bad grade" in grad school applications. Why typically people don't use biases in attention mechanism? We also glimpsed at the each keyword so overall I hope this article was clear enough and educational. Would there be a way to utilize a Switch or IF function for the name based on a slicer? Not sure whathow that would be generated automatically. Now all the needs to be done is to apply this zipped list . Which was the first Sci-Fi story to predict obnoxious "robo calls"? These fields are retrieved from the States table: Finally, we need to determine the fields that will serve as the title of the dynamic column values. When a gnoll vampire assumes its hyena form, do its HP change? Therefore, if that value changes, the header title will dynamically change as well. Remember! rev2023.5.1.43404. We will need to use Table.RenameColumns() function, but with a dynamic argument holding column names to change. However, when you rename columns through some dynamic logic, this mechanism isn't triggered and the column references in reports are broken. Notice the Index column has values 0, 1, 2 repeating. But I often come across scenarios where I would like the new column names to be created dynamically. In my example, here's my code for MyFuncRenameColumns: Here's where you use it as one of the parameters for Table.TransformColumnNames: Thanks for contributing an answer to Stack Overflow! "When you rename a column in the Query view of the Power BI Designer Preview, it implicitly triggers the column references in your reports to be updated. I need to create a global application where we will have an actual data table. Here I have some additional requirements. ID F1 F2 F3 ------Columns same as Data table(Table1) name, 1 X Y Z ------- Dynamic field names as values for the above line for Dept 1, 2 A B C------- Dynamic field names as values for the above line for Dept 2, So, whenever Departement 1 will use my application that time the field names will be X Y Z which will replace the Data Table(Table1) field names i.e. It certainly looks a lot simpler than my solution! where Table2 is "Rename Table" and Table1 is initial table with data. No hidden fees. Now we have something that looks like this: Ok, lets get to work. Each row will represent a different language: Please, notice that this table includes translations not only for column titles but for visual titles as well. For the moment I am going to rename the columns manually by double clicking on the column headers and changing the names. Change column names dynamically with parameters in Power BI Dynamic Power BI Slicer Using DAX Logic - mssqltips.com The first thing we do after importing the Excel file into Power Query is to remove the first 5 rows. Did the drapes in old theatres actually say "ASBESTOS" on them? Dynamic header titles text will be defined based on a value (the language) selected by the user on a slicer. We put the whole logic of nested lists inside of a ListObjectWithCleaningLogic step. Then, click the small drop-down arrow located to the right of the column name. The visual will consist of a simple and plain table, allowing to have multiple columns and rows. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Key features our custom visual will have: Data roles define the type of data that our visualization will receive as input. Improve your PowerQuery skills with Exceed Academy. Can you clarify on "Dimension" being the previous step of the code? For instance, State column will have its header defined by State Title field, since both share the same order, which is 1. Lets analyze the following scenario. Using M to dynamically change column names in PowerQuery No overhead. In this video, I take you through a quick tutorial to demonstrate how to set up dynamic columns in a table in Power BI. Introduction In this example, we will explain a very important feature of CALCULATE filter arguments. https://community.powerbi.com/t5/Power-Query/Dynamic-Column-Names/m-p/862358, https://www.youtube.com/watch?v=fSHcLxA9rY4, https://www.youtube.com/watch?v=yEemVBiaTuk. 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. Plus using the MissingField.Ignore parameter with Table.RenameColumns means that it will only change the selection of columns I want to rename in my production query, the rest will remain unchanged. Again, remove any automatically added Changed Type step if Power Query added one. Stating the original problem according to Ivan's solution, here goes. Right-click the column of your choice: A contextual menu is displayed and you can select the Rename option to rename the selected column. Now fetch the names that are currently applicable to the columns. Thanks Carl, I'll take a look at this. 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. The easiest way is to create some base code in M by double clicking the column header and change the name in just something. Power BI - Dynamic Columns in a Table - YouTube But we will have another table where we will have dynamic field names. Change columns name dynamically - Power Platform Community This will open the "Rename" dialog box. However, when you rename columns through some dynamic logic, this mechanism isn't triggered and the column references in reports are broken. We are going to extract that date and make it a column, as it should be, and then rename both columns regardless of what they are called. To use this we need to get the column names from the 2nd and 3rd row. The article was inspired by a request from a client who had issues exporting data from its data warehousing program to .csv files. Connect and share knowledge within a single location that is structured and easy to search. 3) Right-click on the Date column and select the Fill menu, then Down. In this article, we'll show you some simple and advanced techniques for replacing column names in bulk. What's up guys! By Ruth Pozuelo Martinez. Each dynamic column value must have a corresponding dynamic column header. Then adjust the generated code, like: = Table.RenameColumns (Dimension, { {"Dimension_Name", Dimension [Dimension_Name] {0}}}) In this code "Dimension" is the name of your previous step in the code. For the demonstration purposes, we will use an extract from the Contoso database. Every time program had exported the data, column names exported with a random number of spaces. Power Query: Dynamic column names - code effectivity - LinkedIn If you have a table with old and new names then you can use following pattern. Now you see where this is going? The filtering is set to single select to avoid selecting multiple languages at once. Watch this video in which "Source"is the name of the previous step in my query. Find out about what's going on in Power BI by reading blogs written by community members and product staff. Youll notice I used {1} to get the second item in the list. Making statements based on opinion; back them up with references or personal experience. If your table is empty, then I think you'll get an error when looking up the value in the first row (as there won't be a first row in such circumstances). One approach using Power Query might be to implement some steps like: The code below basically tries to do the above. Hi, @MarcelBeug. Short story about swapping bodies as a job; the person who hires the main character misuses his body. 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). MyFuncRenameColumns) to provide a new column name given any original column name as an input. If Department 2 will use my application that time the field names will be A B C which will replace the same Data Table(Table1) field names i.e F1 F2 & F3. Otherwise, return null. It is like IFERROR() in Excel. 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. Its also used in row2filter context transition and other aspects of the data model that involve filter propagation throughout the model. This would also affect the visual titles. Lets break this down from the inside out: Text.BeforeDelimiter([Column2], ) - in the first row of data, this will return the 11/20/2020 text. As pointed out by Imke, you can feed this issue . Has the Melford Hall manuscript poem "Whoso terms love a fire" been attributed to any poetDonne, Roe, or other? Now we have 2 columns holding wrong and correct column names that we need to transform to list of nested lists.The easiest way to achieve that through the PowerQuery user interface is to add a new custom column and write the following expression. 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. Asking for help, clarification, or responding to other answers. We can state that lineage is Crossfilter is a feature of DAX when it filters the underlying dataset even though there arent any visual filters present. All other structures of the file were correct. Check it out, Introduction to Power BI FREE Online course, Power Query Online Training [updated 2022], M Language Online Course: The unofficial and Practical Reference Guide, Dynamically find and filter header rows and promote them in Power Query. Out of an unknown reason, program was adding random spaces and non-printable characters before or after column names. Unless you have some complex requirements for the function to rename the columns, my solution here is overkill and too complex. this looks like a bug - you should send a frown" [, "Once the column name changes the report breaks because it's expecting the previous column name" [, Dynamically updating column names based on a mapping table, How to Get Your Question Answered Quickly. 1.) Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey. This is the simplest part of the tip. To rename a column heading using Power Query, first select the column you want to rename. 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")). Parker here. With Power Bi Import Mode, you can change column name dynamically on visuals, to achieve this you have to follow below steps. Rename the table: Rename the duplicated table to avoid the confusion. This will pick up all column names ending in " Value", including any that you might not want to rename, but it's just an example and you can tweak the predicate function as necessary. For each trimmed column name, look up the value in the first row of that column (which should give you a list of 5 different strings, which will be the new column names). The reason we introduce them last is that they use all other parts of DAX code to produce faster, more powerful and maintainable code. Unfortunately, it doesn't seem so. I have released my first template app which is Free to download here: http://bit.ly/2othNWm and one trick I use is to change column names based on parameters. As a rule of thumb, you should not use it in iterative functions. The try/otherwise construct says Try this formula. Check it out!Elite Power BI Consulting:https://bielite.com/Data Insights Tools:https://www.impktful.com/Link to PBIX:https://www.dropbox.com/s/fhcsodi6mms8d89/Dynamic%20Columns%20in%20a%20Table%20-%20Finished.pbix?dl=0To enroll in my introductory or advanced Power BI courses:https://training.bielite.com/Connect with me on Twitter!https://twitter.com/PowerBIElite Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). Does anyone know a good workaround to preserve column references in the visuals after applying such a bulk rename step? Dynamically Changing the Field/Column Name Based on Value of Other Column In all other rows it will return errors, because there is no spaces in the other rows, and those are numbers, so there is no text to extract. 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The hide/show effect can be achieved using bookmarks: Nevertheless, this method has a big downside. 2- After that create duplicate dataset for columns un-pivot. Absolut same issue - would be good to have a solution in here. I am also trying to do this for my report and am trying to follow along your explanation. F1 F2 and F3 fields. Carl's has the same result and is a little simpler for the example I gave, however, my situation will benefit from having the rename pairs set out explicitly in a table (ie. I like it - it will always pair up the correct oldname/newname pairs. powerquery - Dynamically rename a set of columns using Power Query It says all of the columns in the table are invalid and I have to redrag the newly named columns to get it to work again. I think it might be possible using advanced editor, but i'm not very good at writing M. I have Dimension table and i want Dimension_name column to have its name dynamically from its values whitch is same in every row in this case. Any help would be appreciated with solving this in either DAX or Power Query. I need this that i can use same template in every customer case and i dont have to change Dimension names every time i change data source. Strangely enough, this limitation/bug reported in 2015 still seems to be the 'state-of-the-art': "When you rename a column in the Query Editor of Power BI.., it implicitly triggers the column references in your reports to be updated. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Find out about what's going on in Power BI by reading blogs written by community members and product staff. Sadly, the built-in table visualization provided by Power BI does not support this feature, since the header titles can only have a static value: Even so, theres a way to get this feature done and thats by creating our own custom visual. ={[OldColumnName],[NewColumnName]} {} is a syntax for creating a list object, and inside of that object, we added old and new column names separated with a comma. In case you have any questions, please feel free to post them below! 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. These are retrieved from the Internationalization table: Remember that each title on the Dynamic column header data role will be associated to the Dynamic column column value field that shares the same data role index. I like how Table.ToRows strips out the column names and Table.FromRows rebuilds the table again with List2 as the column new names. Without the sugar syntax, this would be the equivalent of the each keyword. If you dont know what a custom visual is, you can check this introductory article where we talk about it. when i select a month from slicer , i want to see my meaure "revenue" with the month name from slicer. The first 5 steps give my my column value (the publication year +1). What's up guys! No do-overs. where Table2 is "Rename Table" and Table1 is initial table with data. Receive the latest updates on all business analyst news across all platforms. However if I leave it at R6-1 then I have to go to the displayed tables and changed the column names one by one every month. Thanks for contributing an answer to Stack Overflow! Why refined oil is cheaper than cold press oil? Explanation ALLSELECTED is one of the most complex functions in DAX. How about you take one of our courses? I'll learnt a lot from stepping through your solution, thank you! Next, we need to zip the new names and the old names together using List.Zip. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. If you have a date in your date model, you always need a good date table. Thanks for a great solution. Is there a generic term for these trajectories? Youll find me here: Linkedin https://goo.gl/3VW6Ky Twitter @curbalen, @ruthpozuelo Facebook https://goo.gl/bME2sB#CURBAL #SUBSCRIBE 2- After that create duplicate dataset for columns un-pivot. Let me show you how to change column names based on parameters given by the end user. I don't think there is anyway to rename column dynamically, You can create 5 measures, using current date and figure out all the years, You can add those measures to a table/matrix and overlay it on your main table. you said "TransformColumnTypes", did you mean TransformColumnNames? Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? There might be easier solutions and i welcome every solution you can give me. Dynamically change column names in Power Query using - antmanbi It should be this again: 6) Replace the 11/20/2020 Production Quantity" with Table.ColumnNames(#"Promoted Headers"){1} and replace 11/20/2020 with Table.ColumnNames(#"Promoted Headers"){2}. Not the answer you're looking for? with Power BI reports and Excel pivot tables! 5) Delete any steps you have up to the Promote Headers. No surprises. Is there any way to dynamically change column name from its values. Power Query - conditional column with multiple entry criteria, How to get Column Names dynamically in Excel Power Query, Power Query: how to add columns for each row in a list, Power Query: (Data from Folder) New CSV with added columns replacing last columns from other csv in folder. This idea is described in details here If that is something else then you must use that step, e.g. There was no predictable logic on where it could introduce additional characters in the export. previous = measure. On the other side, doing so makes Power Query code less readable and editable plus you need to do some typing (coding). Parabolic, suborbital and ballistic trajectories all follow elliptic paths. Were you able to get the correct answer? Having said that, it is important to remember that small details can make a big difference. To get items from a list, you can refer to the index of an item in the list using curly brackets again, so change your formula to this, and youll get the column name shown below. As far as I know, it is not possible to do it currently. 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. Which was the first Sci-Fi story to predict obnoxious "robo calls"? 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.