Please download the packaged flowfile to play around with this flow. I am using 5 Fields(f1 to F5) here and the result is an aggregate string field. Depending on your dataset, you might need to add more Fields in to your calculation. Pivot Rows To ColumnsĬreate a field called ‘Work Days’ with below formula and keep only the required fields. Drag ROW_ID in to the pivoted fields section and Workday to aggregate section. The problem being this process takes 4 days to. For my visualization I am not really bothered about that level of detail. I have 10 fields related to seeking advice from different Government sources. Currently we are using an array in excel to combine all the rows for a given patient into one row. I have a data set with a lot of fields, a really large amount, that I am looking to simplify using Prep. Hi I have inherited a report that is summarizing encounter data showing each time a person went to the Doctor with each encounter producing a row. Union with a dummy File to make field names consistent Dummy Header File Union with Dummy Header FileĪdd a pivot step and select row to columns. Combining Multiple Rows into one row in Tableau prep. We will use this column as field names later. Use a calculation to convert RowIDs like 1,2,3 to F1,F2,F3. Please see this post about creating row Ids if you are having difficulty in generating row Ids per employee. In our case we need to create row Ids per employee. Which version of Tableau (Prep and Desktop) are you using Jonathan. fields, indicate the associated input, and give you options for removing or merging the fields. A rank dense calculation is used to sort the values to concatenate. This way we can do all the concatenations at once. The problem is, the header contain the questions that were made, and the questions are different for each survey. The spreadhseets are 2016 sales transactions and 2017 sales transactions. I've linked to two separate Excel spreadsheets for data sources, and want to combine the two sheets with identical fields into one table. This output is an input to another application. The fields that need to be concatenated are pivoted columns to rows. Merge unknown mismatched fields in the wildcard union Hi, i have about 100 surveys (100 csv files) that i need to do a wildcard union with Tableau Prep. I'm sure this is a simple task but I'm new to using Tableau and haven't found the technique in the tutorial videos. Please upvote if you like this idea.ĭata is in tall format which is analysis friendly, but we need to generate an output in csv which has one row per user and all his/her workdays are separated by comma. There is already an idea in the Ideas Forum. If we had a concatenate function in Tableau Prep aggregation step, we could have done this reshaping in a single step. This is a more generalised solution to that same problem.īefore we start, I have to admit that this is a complicated flow for a simple problem. if lookup ( Name,-1)attr ( Name) then previousvalue else previousvalue (Null)+', '+ Name end. This post is inspired by a Tableau community question where a user asked help on combining data from multiple rows into a single cell. This method used a lookup of the next rows - you could probably use previousvalue () as well to append new names.
Aggregating strings is a common task in data cleaning, but it is not yet supported in Tableau Prep out of the box.
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