Add amount to amount in table

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Hi,

Hope someone can help me with this, I want to
add certain amount(Depending on parameter) add it
to the amount in my table.

What type of procedure would I use for something like this?

This is what i have tried:

SQL

create proc usp_CancelSale
@Name nvarchar(50),
@Quantity nvarchar (50)
as
update tblSales 
set
Product = @Name,
Amount  = COUNT(@Quantity)
where Product = @Name

PLEASE ANY HELP WOULD BE APPRICIATED.

Posted 7-Sep-11 11:25am

Ben Paxton

Updated 7-Sep-11 11:29am

Wendelius

v2

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Ben Paxton 7-Sep-11 17:27pm

This is what i have tried:

create proc usp_CancelSale
@Name nvarchar(50),
@Quantity nvarchar (50)
as
update tblSales
set
Product = @Name,
Amount = COUNT(@Quantity)
where Product = @Name

Wendelius 7-Sep-11 17:27pm

~~Could you give a small example?~~ Nevermind, you posted it the same moment I asked.

Ben Paxton 7-Sep-11 17:29pm

Parameter @Quantity must add into the "Amount" column of the table

Elina Blank 7-Sep-11 17:37pm

@Quantity is a varchar. What are you trying to do?
so, count(varchar) will return 1 (1 row)

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Wendelius · Accepted Answer · 2011-09-07T11:33:00

Solution 1

If I understood correctly, if quantity is going to be added to the amount then you could use something like:

SQL

update tblSales
set
Product = @Name,
Amount  = Amount + @Quantity
where Product = @Name

Also the @Quantity is now defined as nvarchar (50) in the parameters. If it's a number you should use proper datatype for the parameter (decimal, int, ...)

Posted 7-Sep-11 11:33am

Wendelius

Comments

Ben Paxton 7-Sep-11 17:35pm

Thanks alot!!

Wendelius 7-Sep-11 17:36pm

You're welcome :)