How to add 2 decimal columns when one of them may be null

Hi experts,

If I have two decimal columns in a table and I want to return the sum of the two columns added together as another column in my resultset, how do I do it when one of the columns 'may' be NULL?

(OPR.refund_product_value + OPR.refund_extra_value) AS refund_total_value

If one of the two values here is NULL, the result is also NULL.

Help appreciated.
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Ephraim WangoyaCommented:

(ISNULL(OPR.refund_product_value, 0) + ISNULL(OPR.refund_extra_value, 0)) AS refund_total_value

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SELECT COALESCE(table1.field1,0,table1.field1) + COALESCE(table1.field2,0,table1.field2)  as fieldname
FROM table1
jammy-d0dgerAuthor Commented:
Perfect, spot on.  Works a treat, thanks for that.
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Microsoft SQL Server 2005

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