help with parameter in WHERE

[knowzero]

my query:
select Product_List.*, Product_Sales.*
from Product_List
left outer join Product_Sales on Product_List.ID = Product_Sales.I D

this works fine. its simple. I have this in a report and I would like
to add a parameter @p1 to add to the query

where Product_Sales.O rder_Amount >= @p1

my problem is that if @p1 is null I want to retrieve all recorders in
Product_List. any ideas.

Do you need more clarification.

[Jack Vamvas]

Re: help with parameter in WHERE

Try:

where Product_Sales.O rder_Amount =
CASE
when @p1 is null then Product_Sales.O rder_Amount
else @p
END


--

Jack Vamvas
_______________ _______________ _____
Advertise your IT vacancies for free at - http://www.ITjobfeed.com



"knowzero" <isacp@bhphoto. comwrote in message
news:1174504953 .877881.232990@ b75g2000hsg.goo glegroups.com.. .

my query:
select Product_List.*, Product_Sales.*
from Product_List
left outer join Product_Sales on Product_List.ID = Product_Sales.I D
>
this works fine. its simple. I have this in a report and I would like
to add a parameter @p1 to add to the query
>
where Product_Sales.O rder_Amount >= @p1
>
my problem is that if @p1 is null I want to retrieve all recorders in
Product_List. any ideas.
>
Do you need more clarification.
>

[Hugo Kornelis]

Re: help with parameter in WHERE

On 21 Mar 2007 12:22:38 -0700, knowzero wrote:

>my query:
>select Product_List.*, Product_Sales.*
>from Product_List
>left outer join Product_Sales on Product_List.ID = Product_Sales.I D
>
>this works fine. its simple. I have this in a report and I would like
>to add a parameter @p1 to add to the query
>
>where Product_Sales.O rder_Amount >= @p1
>
>my problem is that if @p1 is null I want to retrieve all recorders in
>Product_List . any ideas.

Hi knowzero,

WHERE Product_Sales.O rder_Amount >= COALESCE(@p1,
Product_Sales.O rder_Amount)

--
Hugo Kornelis, SQL Server MVP
My SQL Server blog: http://sqlblog.com/blogs/hugo_kornelis

[Ed Murphy]

Re: help with parameter in WHERE

knowzero wrote:

my query:
select Product_List.*, Product_Sales.*
from Product_List
left outer join Product_Sales on Product_List.ID = Product_Sales.I D
>
this works fine. its simple. I have this in a report and I would like
to add a parameter @p1 to add to the query
>
where Product_Sales.O rder_Amount >= @p1
>
my problem is that if @p1 is null I want to retrieve all recorders in
Product_List. any ideas.

where @p1 is null or Product_Sales.O rder_Amount >= @p1