Only show unique values of a column in table

jrtomici · August 2022

Is there a way, in analyzer or ETL, where we can only display one row for each unique value of a column corresponding to a key column? For example, I would want this:

to become this:

RobSomers · August 2022

@jrtomici You can use the Remove Duplicates tile when creating an ETL if it doesn't matter which row you keep:

https://domohelp.domo.com/hc/en-us/articles/360044876614-Magic-ETL-Tiles-Filter#:~:text=To%20configure%20the%20Remove%20Duplicates%20tile%2C&text=Click%20the%20Remove%20Duplicates%20tile%20in%20the%20canvas.&text=tile%20by%20clicking-,%2C%20then%20entering%20the%20name%20you%20want.,Select%20the%20column%20you%20want.

If which row you want to keep does matter, then I would use the Rank & Window tile to help identify duplicate rows and how you want to mark them to be excluded:

https://domohelp.domo.com/hc/en-us/articles/360042922814-Old-Magic-ETL-Tiles-Rank-and-Window

RobSomers · August 2022

@jrtomici You can use the Remove Duplicates tile when creating an ETL if it doesn't matter which row you keep:

https://domohelp.domo.com/hc/en-us/articles/360044876614-Magic-ETL-Tiles-Filter#:~:text=To%20configure%20the%20Remove%20Duplicates%20tile%2C&text=Click%20the%20Remove%20Duplicates%20tile%20in%20the%20canvas.&text=tile%20by%20clicking-,%2C%20then%20entering%20the%20name%20you%20want.,Select%20the%20column%20you%20want.

If which row you want to keep does matter, then I would use the Rank & Window tile to help identify duplicate rows and how you want to mark them to be excluded:

https://domohelp.domo.com/hc/en-us/articles/360042922814-Old-Magic-ETL-Tiles-Rank-and-Window

jrtomici · August 2022

Great, thank you. How would I approach the logic of removing duplicates only within a unique ID? I don't want to remove all duplicates, just `Num`s that appear multiple times within a corresponding ID (see example). @RobSomers thanks!

RobSomers · August 2022

@jrtomici The Remove Duplicates tile should let you select multiple columns, so you would select the ID and Num columns to look for duplicates and in your example it would see row 2 and 3 as duplicates, and then the ETL would remove one of them and you would just be left with one row with ID of 1 and Num of 4. It would leave rows 6 and 7 alone because 2-6 and 3-6 are not duplicates. They have an example of what this looks like in the link to page about Remove Duplicates.

jrtomici · August 2022

Thank you so much!

Only show unique values of a column in table

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