Randomly sum rows

Question

I would like to randomly insert in a new temp_table the records from the Initial Table below, grouping them by a new PO number (1234-1, 1234-2,etc..) where each group sum(TK

Answer 1

The logic of the 1234-1, 1234-2, etc is to break the records into groups that represent a carton. If the order has 100 line items, I may need n cartons (n groups) to pack all the items.

Answer 2

It's probably a job for a cursor.

The algorithm could basically be like this:

• Collect the rows from the initial table one by one, accumulating sum(TKG) and sum(TVOL):
  • pick out the rows into the temp while the conditions are still met (omit those that exceed either sum);
  • use lineID as the order;
  • iterate up to the end of the list.
• Upon hitting the end of the table call it a group, then start all over again, omitting the rows that have already been collected into the temp.
• Continue while there still are rows not collected.

But I'm too lazy at the moment to give out the actual code, besides it's a homework, and cursors hate me anyway.