As you say, the replacement column names would need to be listed in the correct order within List2. 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. English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus", Get the names of the 5 rightmost columns of the table (which should give you a list of 5 strings, all of which end in. Lets analyze the following scenario. In that case, you would need to adjust the inner environment variable. I have the exact same issue. All we need do is create a connection to SQL Server and import the FactInternetSales table to Power BI as seen below. Without the sugar syntax, this would be the equivalent of the each keyword. 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. Does anyone know a good workaround to preserve column references in the visuals after applying such a bulk rename step? When I rename columns it breaks the tables I have made. Each dynamic column value must have a corresponding dynamic column header. 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. 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. I need to create a global application where we will have an actual data table. If you continue to use this site we will assume that you are happy with it. the Renamed columns1 step seems like it should work, but then it throws the error. Is there a way to dynamically identify and expand an embedded table's columns? STEP 1: Import the dataset. 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. 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. I'll step it out in my original problem for completeness. 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. 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. On top of that, title translations will end up being hardcoded into the visualizations, instead of using information provided, for example, from a database. How about you take one of our courses? Here I have some additional requirements. The first thing we do after importing the Excel file into Power Query is to remove the first 5 rows. What's up guys! 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. let rename_list = Table.ToColumns (Table.Transpose (Table2)), result = Table.RenameColumns (Table1, rename_list, MissingField.Ignore) in result. 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 given by the end user. We put the whole logic of nested lists inside of a ListObjectWithCleaningLogic step. 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. 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. when i select a month from slicer , i want to see my meaure "revenue" with the month name from slicer. NOTE: If you had any Changed Type step created by Power Query, delete it. Once your account is created, you'll be logged-in to this account. 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. So if user is selection Money in column names should be (EUR) and if selected volumes it should be written (HL). From basic find and replace to more complex formulas, we've got you covered. I like it - it will always pair up the correct oldname/newname pairs. Once again, manually rename the headers. Details: List. 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. Now that we have the correct argument form, we need to create a function that would accept a table variable with messy column names and clean it with the logic we already set in the list argument.Following is the complete M function code: We used this technique to dynamically change column names without transposing the table structure. Date to Invoice Date; Customer to Client; You'll see that a new step "Renamed Columns" got inserted with the following code. In this article, we are going to talk about cleaning and transforming column names dynamically and in a bulk. Would there be a way to utilize a Switch or IF function for the name based on a slicer? The second parameter, here, plays the main role. Improve your PowerQuery skills with Exceed Academy. We also get your email address to automatically create an account for you in our website. English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus". The easiest way to achieve that through the PowerQuery user interface is to add a new custom column and write the following expression. There was no predictable logic on where it could introduce additional characters in the export. Absolut same issue - would be good to have a solution in here. The best way to maintain this data is to create a new table, which will be responsible of storing these translations. Well add it back at the end when our column names are predictable. 3- Create relationship between both datasets on the basis of Index. The largest, in-person gathering of Microsoft engineers and community in the world is happening April 30-May 5. To learn more, see our tips on writing great answers. 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. 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. Is "I didn't think it was serious" usually a good defence against "duty to rescue"? I am also trying to do this for my report and am trying to follow along your explanation. To use this we need to get the column names from the 2nd and 3rd row. 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. Effect of a "bad grade" in grad school applications. Is there a generic term for these trajectories? From here, you can type in the new column name, and click "Ok" when done. Embedded hyperlinks in a thesis or research paper. We used records, lists, and an iteration to reach the solution, so this should be a pretty educational topic. 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. Introduction In this example, we will explain a very important feature of CALCULATE filter arguments. by PowerBIDocs. The solution is simple, instead of using a static text box, like in the first approach, well opt for a card. Find out more about the April 2023 update. i am exactly looking for this solution. In order to add multilanguage support to our report, we need to have a record for each title translation that can be displayed. Receiving an adequate list argument for the Table.RenameColumns() function was the harder part of development. 2- After that create duplicate dataset for columns un-pivot. Generating points along line with specifying the origin of point generation in QGIS. Series: https://goo.gl/FtUWUX- Power BI dashboards for beginners: https://goo.gl/9YzyDP- Power BI Tips \u0026 Tricks: https://goo.gl/H6kUbP- Power Bi and Google Analytics: https://goo.gl/ZNsY8lPOWER BI COURSES:Want to learn Power BI? Parker here. First create a nameGenerator function (e.g. Better to show it, here is Power Query code snippet, query "columnNames . 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. 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. Asking for help, clarification, or responding to other answers. 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. were you able to get this working? But I often come across scenarios where I would like the new column names to be created dynamically. If you dont know what a custom visual is, you can check this introductory article where we talk about it. Generally, we use the output of the previous step in here. What is Wario dropping at the end of Super Mario Land 2 and why? Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, Filter specific value on a concatenate field in DAX, Subtracting from the same column based on select filters Options, Get values from one table and put in other table based on other column DAX/Power Query M. Is there a formula to automatically drag data form many columns into a new column? Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? Key features our custom visual will have: Data roles define the type of data that our visualization will receive as input. We can use a List in Power Query to make this dynamic. This is . Therefore, if that value changes, the header title will dynamically change as well. This is the simplest part of the tip. From the ribbon, click Add Column > Index Column (dropdown) > From 0. Information and consulting on Business Intelligence using Microsofts Power BI and Excel applications. 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. Again, remove any automatically added Changed Type step if Power Query added one. If you did double-click though, this would be the formula Power Query would generate: We need to replace the first part of the renaming list (the list is in the curly brackets). Lineage is a part of DAX mechanics that enables us to use tables as filter arguments for the CALCULATE function. 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. 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. 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 will need to use Table.RenameColumns() function, but with a dynamic argument holding column names to change. 2.) Which was the first Sci-Fi story to predict obnoxious "robo calls"? Now the date will fill the column. SOUTHWORKS Development on Demand is the new model for nearshore software development. As always, set the data types for all columns at this point too now that we know what our column names will be. It takes a nested list of old and new column names as its second argument. The dropdown listbox to the left of the formula bar should now say Format, and the formula in the formula bar should have a format string. Thanks for contributing an answer to Stack Overflow! Date.FromText() will take the date in the first row and convert 11/20/2020 to a real date. We use cookies to ensure that we give you the best experience on our website. However, when you rename columns through some dynamic logic, this mechanism isn't triggered and the column references in reports are broken. You can further enrich the function in case you need more control over the new column names. In this article, we'll show you some simple and advanced techniques for replacing column names in bulk. Now, lets focus on the formula bar, specifically each keyword. We also glimpsed at the each keyword so overall I hope this article was clear enough and educational. Any help would be appreciated with solving this in either DAX or Power Query. Power Query will then automatically update the column . 10000000 -- High - Low - High - Low - High - Low, 10000001 -- Low - Low - Low -Low -Low - High, Once I Imported this table into powerBI I can display such information in a table (Visual). 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]. 2) On the Add Column ribbon click Add Custom Column. Out of an unknown reason, program was adding random spaces and non-printable characters before or after column names. Find centralized, trusted content and collaborate around the technologies you use most. When a gnoll vampire assumes its hyena form, do its HP change? When you login first time using a Social Login button, we collect your account public profile information shared by Social Login provider, based on your privacy settings. Current = measure. Infact, under column values it is showing error #This field can't be used since it is invalid. If you have a table with old and new names then you can use following pattern. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Dynamic column values: defines the table columns which their header title must be dynamic. The table columns can have either a static header title or a dynamic header title. I like how Table.ToRows strips out the column names and Table.FromRows rebuilds the table again with List2 as the column new names. Now we have something that looks like this: Ok, lets get to work. 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. 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. However, when you rename columns through some dynamic logic, this mechanism isn't triggered and the column references in reports are broken. This is a good solution but after changing the column name with the help ofPower Query Formula Language (M), when I apply those chnages to dashboard the visuals were failed load. rev2023.5.1.43404. Wouldnt be nice to add multilanguage support to our visualization? 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. Sometimes though the column you are renaming can have different names with each refresh, so this method won't work. By Ruth Pozuelo Martinez. Which was the first Sci-Fi story to predict obnoxious "robo calls"? 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. This idea is described in details here where Table2 is "Rename Table" and Table1 is initial table with data. If it works, give me the result. Receive the latest updates on all business analyst news across all platforms. Wrestling Excel files to the ground until a decent Power BI report can be made. Unfortunately, it doesn't seem so. 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. Its also used in row2filter context transition and other aspects of the data model that involve filter propagation throughout the model. Stating the original problem according to Ivan's solution, here goes. What if we could have just one single table with dynamic header titles that change depending on the selected language? The try/otherwise construct takes care of it. 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. This is so Power Query will generate the Table.RenameColumns() step for us and we will make minor tweaks. If that is something else then you must use that step, e.g. But we will have another table where we will have dynamic field names. 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. I think I need to merge List1 and List2 into a single list of pairs, but can't figure out the correct syntax. Dynamic header titles text will be defined based on a value (the language) selected by the user on a slicer. if so please share? In this video, I take you through a quick tutorial to demonstrate how to set up dynamic columns in a table in Power BI. 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. The first 5 steps give my my column value (the publication year +1). I'll learnt a lot from stepping through your solution, thank you! Every time program had exported the data, column names exported with a random number of spaces. The visual will consist of a simple and plain table, allowing to have multiple columns and rows. The hide/show effect can be achieved using bookmarks: Nevertheless, this method has a big downside. And Index column not support the Direct Query Mode. Updated June 29, 2022. After we transformed that record to a table, we duplicated the values column which is holding the old column names. Let's get started and learn how to rename columns like a pro in Power Query. Youll find me here: Linkedin https://goo.gl/3VW6Ky Twitter @curbalen, @ruthpozuelo Facebook https://goo.gl/bME2sB#CURBAL #SUBSCRIBE I've gone with Ivan's answer because in production, I have some columns that I don't want to rename plus I was trying to figure out how to use the Table.RenameColumns function properly. Specializing in Power Query Formula Language (M), Power Query Formula Language (M), when I apply those chnages to dashboard the visuals were failed load. Typically a slicer is used to select data from table rows, not from columns. Then, click the small drop-down arrow located to the right of the column name. The following M code will give us the old and new, cleaned column names. 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. 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. Youll notice I used {1} to get the second item in the list. What risks are you taking when "signing in with Google"? 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. 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. Which language's style guidelines should be used when writing code that is supposed to be called from another language? Lets see what we can do about it. (adsbygoogle = window.adsbygoogle || []).push({}); 1- Assign index to each rows using Index column under Power Query Editor. Also,can you elaborate on the "#changed type"? To get a nested list of lists, we also need to transform that NestedLists column to a list. Each dynamic column value must . 1) We need that date in a new Date column so we can relate it to a Date table later. As pointed out by Imke, you can feed this issue . previous 2 = measure. Any help would be most appreciated! Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? Connect and share knowledge within a single location that is structured and easy to search. To see how it works, remove your manual renaming step, and type in this formula, and you will get the list shown below. To begin with you need a small dataset: Next create a list of values using curly braces, these values will act as the new names of the columns. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. Connect and share knowledge within a single location that is structured and easy to search. No hidden fees. (adsbygoogle = window.adsbygoogle || []).push({}); If you want to achieve this with in Direct Query then you have to prepare your datasets same like Import Mode final Datasets. Posted June 27, 2022. That means that other transformations of the values in the NewColumnName column should be added after the TrimmedText applied step.We used list and record objects in creating the solution so hopefully, you got a clearer picture of how to use them and where. Dynamically rename a set of columns using Power Query, https://bondarenkoivan.wordpress.com/2015/04/17/dynamic-table-headers-in-power-query-sap-bydesign-odata/, How a top-ranked engineering school reimagined CS curriculum (Ep. In my example we can switch in a slicer between Money and Volumes. Power Query indexes at zero, so {0} would return the first item. Why don't we use the 7805 for car phone chargers? Consider this very simple example: You receive this file every day, and the column name starting in Row 6, Column B, constantly changes. If total energies differ across different software, how do I decide which software to use? With the Index column selected click Transform > Standard (dropdown) > Modulo. 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. "When you rename a column in the Query Editor of Power BI.., it implicitly triggers the column references in your reports to be updated. 1. What's up guys! Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? I need a way to dynamically change the header names of my matrix to display what those month names would be. 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. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. you said "TransformColumnTypes", did you mean TransformColumnNames? 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. That isnt a problem and youll see why in a minute. SUGGESTIONS? Hi I have many tables with codes as headers (ITMREF, ITMDESC) etc, and I have a 2-column Excel file in which I have the definition of each code (ITMREF = Item ID, ITMDESC = Item description). Unfortunately, while typing, it jumped from the second line to the first line, but it is the same "Source". Dynamically updating column names based on a mapping tablecould be super useful if only the output workednot just with flat Excel tables, but alsowith Power BI reports and Excel pivot tables! (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. 4) On the Home ribbon, click Use First Row as Headers. The reason we introduce them last is that they use all other parts of DAX code to produce faster, more powerful and maintainable code. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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! It is preferable to use it only as a CALCULATE filter remover, not as a table function. What is Lineage? 5) Delete any steps you have up to the Promote Headers. I only used Text.Trim transformation over the NewColumn, but you can also use any other transformation to further clean column names, like Clean, Text.Proper, etc. No surprises. Here you can find the available courses:https://curbal.com/courses-overviewABOUT CURBAL:Website: http://www.curbal.comContact us: http://www.curbal.com/contact************************QUESTIONS? As a rule of thumb, you should not use it in iterative functions. 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. Follow these steps in order to change column name dynamically. Since we needed to consolidate every daily export in a single database (we are talking about 365 different exports for a single year of data), we needed to create a function that will dynamically clean column names from additional spaces. 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