Copying tables each other but with new row numbers or something like that

Take T4.ProductID , T4.ProductName from T4 where T4.CartID = @.CartID
.IF EXISTS
.Insert Into T1 values(T4.ProductId) and Get the T1.RowNo (T1.RowNo autoincrement column)
.Take T5.ProductID , T5.ProductGroup where T5.ProductID = T4.ProductID
.IF EXISTS
.INSERT INTO T2 values(T1.RowNo,T5.ProductGroup)
.Take T6.ProductID,T6.ProductGroup,T6.ProductDetail Where T6.ProductID = T4.ProductName AND T6.ProductGroup = T5.ProductGroup
.IF EXISTS
.INSERT INTO T3 values (T1.RowNo,T5.ProductGroup,T6.ProductDetail)

I Hope i am clear. It is very confusing but try to thing. I really need help. I am trying to make a shopping site.
T1 stores ProductID, this table is ShoppingCart
T2 stores DetailGroup of Product stored in T1.
T3 stores Detail of Product.

T1 - T2 - T3
EX: 1,Samsung HDD - 1,External - 1,External,750GB

User can save this cart. When user saves cart, tables are copying each other. T1 to T4 , T2 to T5 , T3 to T6. So everything is ok up to this point. But when user try to add his/her saved cart to current cart problem begins.

T4 - T5 - T6
EX: 1,Samsung HDD - 1,External - 1,External,750GB

When user adds a product, it is inserted into T1 as a new row and first column(T1.RowNo) is autoincrement. I need to copy user cart values from T1 to T4 and get the inserted rows new RowNo and use it when inserteing the T5 into T2 and T6 into T3. I hopw i am clear. I try to write code but it was very long. If you need code please let me know. I REALLY NEED HELP .

AND

Another simple question. Are stored procedures takes values that comes from another stored procedure as Table. I mean SP1 returns a table. And SP2 takes that table row by row and makes the operation?

Ex: you are calling SP2 5 times for different 5 values(nvarchar(50),int). Likewise can you call SP2 one time and getting a Table whisch stores 5 nvarchar(50),int value as rows.

Happy Coding

"MasterG"

Surely your table names are NOT "T1", T2", etc.

|||Sure names are not T1 or T2 etc. But is it important? Just a table name. Why did you asked that?