Assigning blank value as Zero

ozarkram
ozarkram ⚪️
in Data Platform & Data Science

Hi All,

I have a field by the name rate which has decimal values and this field is coming in from a google sheet..

I have a lot of rows of this field as blank ...Can you please let me know how to replace the blank values as 0..

I am currently using this case when ifnull(rate,0) then 0 else rate....This is giving an error

Answers

  • Recluz
    Recluz ⚪️

    CASE WHEN rate IS NULL THEN 0 ELSE rate END

  • GrantSmith
    GrantSmith Indiana 🥷
    edited June 7 
    COALESCE(`rate`, 0)

    Coalesce also works. It returns the first non-null value supplied. This is assuming your data is actually NULL and not an empty string. If it is you can force it to be null:

    COALESCE(NULLIF(TRIM(`rate`), ''), 0)

    TRIM to strip whitespaces at the beginning and end of the string for good measure.


    Also to address your beast mode IFNULL will return a value but it's not evaluating to TRUE for FALSE as the case statement expects. This is why you're getting an error.

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  • ozarkram
    ozarkram ⚪️

    Thank you so much @Recluz and @GrantSmith ..Really appreciate your help!

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