NZ function in SQL Server

July 24, 2006

>>Script Language and Platform: SQL Server 2000

Objective: To simulate MS-Access NZ function.

--Usage:
select dbo.NZ(NULL,'haha') as results
--results = haha
select dbo.NZ(123,'haha') as results
--results = 123
select dbo.NZ('ABCDE','haha') as results
--results ABCDE
select dbo.NZ('ABCDE',0) as results
--results ABCDE
select dbo.NZ(NULL,1) as results
--results 1

Author: MAK

create function dbo.NZ (@a sql_variant,@y sql_variant)
returns sql_variant
as
begin
declare @myvar sql_variant
if isnull(@a,1) = 1
begin
set @myvar=@y
end
else
begin
set @myvar=@a
end
return @myvar
end
go

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