Count No of Records Based on unique ID

sailorish · April 2021

Trying to count number of unique records for each customer id in beast mode. Currently using:

COUNT(DISTINCT

CASE

WHEN `unique ID`=`unique ID`

THEN COUNT(DISTINCT `Records`)

END)

Any help? Keep getting error message.

MarkSnodgrass · April 2021

You can't do a count distinct inside of another count distinct. Also, unique id will always equal unique id because it evaluates by row and so you are comparing the value to itself.

Have you tried just COUNT(DISTINCT 'Records')) That actually seems to be what you are after if you have the customer id as one column and then the count of distinct records as another column.

Giacomo · April 2021

I think you're looking to use a Windowing function within a Beast Mode, however I do not believe that you can do a count distinct within a Windowing function ( I could be wrong on that). If it's an option you may want to consider doing it within a Magic ETL using the Rank & Window tile.

jaeW_at_Onyx · April 2021

Both @MarkSnodgrass and @Giacomo are correct, you cannot nest Count Unique inside a Window Function.

... well.... you can, but the answer will be 1.

What's your use case? What question are you trying to answer?

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Count No of Records Based on unique ID

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