标签：server serve highlight sts val begin value return obj
if exists ( select *
from sys.objects
where object_id = object_id(N‘dbo.nvl‘) and type = N‘FN‘)
begin
drop function [dbo].[nvl];
end
go
create function dbo.nvl(@check_value sql_variant ,@replace_value sql_variant )
returns sql_variant
as
begin
return isnull(@check_value,@replace_value);
end
go
select dbo.nvl(null,‘sfs‘)
select dbo.nvl(null,1)
select dbo.nvl(null,getdate())
select dbo.nvl(1111,100000000)
标签：server serve highlight sts val begin value return obj
原文地址：https://www.cnblogs.com/coolyylu/p/9375498.html
