Return all records if sp parameter has blank value

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SQL-Server-2008R2

I have a select query inside stored procedure.It has a parameter @attendance .If i pass 'P' as a value it returns all the emp names which are present and if 'A' then absent.but if i send '' as a value to @attendance i want it to return all the records present as well as absent.how to do this?

currently i have the following where clause
select * from attend

SQL

where Date=convert(datetime,'@Date',103) and
    Attend= case
    when @attendance is not null then @attendance 
    else
    Attend
    end

Posted 5-Jun-14 20:31pm

pwavell

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Magic Wonder · Answer 1 · 2014-06-05T20:39:00

Solution 1

Hi,

I hope this will help you.

SQL

where Date=convert(datetime,'@Date',103) and
    Attend= case
    when @attendance <> '' then @attendance
    else
    Attend
    end

Posted 5-Jun-14 20:39pm

Magic Wonder

Comments

pwavell 6-Jun-14 2:58am

thanks its working.i have another query.i want to pass month,year and emp name and get whole months attendance for that employee.

Magic Wonder 6-Jun-14 3:14am

Your welcome. You can mark this solution as accepted solution.

Also, i will suggest, first you will write your query at your own with your requirements and if in case you fail in getting the desired output then share the same in details.

Cheers

ArunRajendra · Answer 2 · 2014-06-05T21:01:00

Solution 2

A simpler version but wroks only when passed NULL instead of ''.

SQL

Attend=COALESCE(@attendance ,Attend)

Posted 5-Jun-14 21:01pm

ArunRajendra