Question

In MS SQL, how do I use array?

Asked by: erin027

Hello Experts.

I have a table name product that has two columns(ProductName and ProductDescription)
I am trying to created a store proc to input new data, but the thing is I have multi parameter. How do I input all that?
Create Proc CreateProduct(
   @ProductName1            nvarchar(20)
,  @ProductName2            nvarchar(20)
,  @ProductName3            nvarchar(20)
,  @ProductName4            nvarchar(20)
,  @ProductDescription1   nvarchar(300)
,  @ProductDescription2   nvarchar(300)
,  @ProductDescription3   nvarchar(300)
,  @ProductDescription4   nvarchar(300)
)

Insert Product (ProductName,ProductDescription)
Values (@ProductName1,@ProductDescription1)
... so on...


How do I do this?
Thank you.

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Asked On
2008-03-27 at 19:14:45ID23276277
Topic

SQL Server 2005

Participating Experts
3
Points
500
Comments
4

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Answers

 

by: Howie_LyPosted on 2008-03-27 at 20:02:33ID: 21227696

You'd be better off going down the track you've already started.

e.g.

Create Proc CreateProduct(
   @ProductName1            nvarchar(20)
,  @ProductName2            nvarchar(20)
,  @ProductName3            nvarchar(20)
,  @ProductName4            nvarchar(20)
,  @ProductDescription1   nvarchar(300)
,  @ProductDescription2   nvarchar(300)
,  @ProductDescription3   nvarchar(300)
,  @ProductDescription4   nvarchar(300)
)

Insert Product (ProductName,ProductDescription)
Values (@ProductName1,@ProductDescription1)


Insert Product (ProductName,ProductDescription)
Values (@ProductName2,@ProductDescription2)


Insert Product (ProductName,ProductDescription)
Values (@ProductName3,@ProductDescription3)


Insert Product (ProductName,ProductDescription)
Values (@ProductName4,@ProductDescription4)




As there aren't too many variables there.  However if you wanted to do it, although t-sql does not support arrays natively.. you could fake an array.  Here's an example :

http://databases.aspfaq.com/database/how-do-i-simulate-an-array-inside-a-stored-procedure.html




Insert Product (ProductName,ProductDescription)
Values (@ProductName1,@ProductDescription1)

 

by: frankyteePosted on 2008-03-27 at 20:09:57ID: 21227724

do you have a fixed number of parameters? if so then you can just use a union with a single insert statement, for eg:

Insert Product (ProductName,ProductDescription)
select @ProductName1,@ProductDescription1
union
select @ProductName2,@ProductDescription2
union
select @ProductName3,@ProductDescription3
union
select @ProductName4,@ProductDescription4

 

by: frankyteePosted on 2008-03-27 at 20:10:49ID: 21227728

or
Insert Product (ProductName,ProductDescription)
select @ProductName1 as ProductName, @ProductDescription1 as ProductDescription
union
select @ProductName2,@ProductDescription2
union
select @ProductName3,@ProductDescription3
union
select @ProductName4,@ProductDescription4

 

by: shamilatPosted on 2008-03-27 at 22:15:52ID: 21228195

there is better way rather than using arrays as SQL parameter,instead you can use XML parameter,
this is going to be efficient in SQL server rather the pasing lots of parameters into the Procedure..

check it..



-- this is going to be your Procedure
create proc CreateProduct
(
	@products xml
)as
begin
	
	 INSERT INTO product
	select @products.value('(root/product/name)[1]','varchar(20)'),@products.value('(root/product/description)[1]','varchar(20)')
	union
	select @products.value('(root/product/name)[2]','varchar(20)'),@products.value('(root/product/description)[2]','varchar(20)')
	union
	select @products.value('(root/product/name)[3]','varchar(20)'),@products.value('(root/product/description)[3]','varchar(20)')
	union
	select @products.value('(root/product/name)[4]','varchar(20)'),@products.value('(root/product/description)[4]','varchar(20)')
 
 
end
 
 
 
 
-- you can call your proc as follows
declare @xml xml
set @xml='<root>
			<product><name>PR1</name><description>Description 1</description></product>
			<product><name>PR2</name><description>Description 1</description></product>
			<product><name>PR3</name><description>Description 1</description></product>
			<product><name>PR4</name><description>Description 1</description></product>
		</root>'
 
exec CreateProduct @xml

                                              
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