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how can I sum the fields contain null values

WuCong
8 - Asteroid

as you can see ,I want to sum some fields, and the fields may have null values. we want to sum the non-null values.

what function should I use?

2 REPLIES 2
AMiller_Tri
Alteryx Alumni (Retired)

Hi @wu cong? , thank you for your question!

 

when using the SUM() function, it sums the non-null values:

So you don't need to use a particular function for this scenario.

 

Now, if you want to sum the row instead of the column - you can first nest the columns to an array, using the 'nest columns into object' transform:

and then use the LISTSUM() function to sum the values in the array:

You can see that although there are null values in the array - the function knows to sum only the numbers

 

I hope that makes sense; please feel free to ask any additional questions.

 

Thanks,

Amit.

The sum value will be NULL . If you want to do additions in the database: use SUM if it's an option to sum up a column of a result set instead of expressions ( SUM ignores NULL values) wrap columns with https://bit.ly/3u0MQHK COALESCE(column, 0) ( COALESCE takes the first non-null argument)