Thread: select query
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Old January 16th, 2005, 03:27 PM
collie collie is offline
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Default select query


I have a table with 2 fields:

passport varchar
idNo numeric

I have to display the fields in one column
If idNo is null then I want to show the passport number in the column but if neither passport or idNo are null then I want to show the idNo.

I tried the following select query but it only works if both fields are numeric and i can't change the data type for one of the fields as it will coz huge problems:
select idno,passport,
(case when idno is null then passport else idno end) as sid
from student

How can I make it work?