tableau-desktop

Tableau Calculated field going off

Below is the if else statement I am using.

IF ([Days]<='0' or [Days]='none') THEN '0'
ELSEIF [Days]>'0' or [Days]<='273.5' THEN '182'
ELSEIF [Days]>'273.5' or [Days]<='548' THEN '365'
ELSEIF [Days]>'548' or [Days]<='913' THEN '730'
ELSEIF [Days]>'913' or [Days]<='1460' THEN '1095'
ELSE '1825' 
END

However, I am seeing few rows going off. First column is number of days, second and third columns are same (Calculated field)

enter image description here

Solution

  • You are comparing strings instead of integers. String comparison is based on alphabetical order. That explains why '30' > '273.5' even though 30 < 273.5 A pair of quotation marks makes a significant difference.

    Change the data type for [Days] to a whole number, and then remove the quotes in your calculated field so that you are comparing numbers instead of strings.

    Also, you can simplify/clarify your calculation by removing all the tests involving a ">". They are redundant because of the earlier tests - as long as you test in increasing order. Simple is usually better.