Question

Suggest me the proper syntex for below raw condition.

ALTER PROCEDURE [dbo].[pro_name]
@number as int ,

Select * from table 
if(@number=0)
begin
set @number=select max(number)from table
end
where table.number=@number

here i need to set @number with max value if input value passed is ‘0’. and also want to use th e same in wherer clause.

Answer 1

ALTER PROCEDURE [dbo].[pro_name]
@number as int=0 --I recommend a default value here too
as
set @number=case @number when 0 then (select max(number)from [table]) else @number end;

Select * from [table] t
where t.number=@number;
go