combine sql column return null


i have a table whit firstName and lastName columns
in my sql query i need to combine then like that
select lastName +' '+firstName as fullName
if one of the column are null i am getting null even i have a name in the lastName or FirstName col
how can i fix that ?

thanks ...
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Jim HornMicrosoft SQL Server Data DudeCommented:
Couple of ways to pull this off, but try this one..
   COALESCE(lastName, '') +
   CASE WHEN lastName IS NULL THEN ' ' END + 
   COALESCE(firstName, '') as FullName

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With any expression where you're adding values, if one of the values is NULL then the entire expression evaluates to NULL.

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You can use ISNULL function:

select ISNULL(lastName,'') +' '+ISNULL(firstName,'') as fullName 

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Microsoft SQL Server 2008

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