iterate through a list and add to group

• Talvin Singh

  Ten Centuries

  Points: 1288

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  February 5, 2018 at 5:03 pm

  #336076

  hi all,
  i have a university assignment around an order allocation system for a spare parts business.  I need to allocate orders to one of 4 shelf position, which have been assigned a check point.  so orders for that check point get placed into shelf, but once there are more than or equal to 5 items in that shelf position, it gets assigned an id.  the next set of orders come through and will check of space for those shelves that are not full   once all shelf have exceeded 5 items, all those orders are part of that id, lets say IS= 1. 
  

  as you can see there is a shelf location table on the right.  it gets allocated a checkPoint.  the group of orders come through along with items and checkPoints.  the green area is the iteration i require to go through each line and update the Shelf, Items In CheckPoint and Group columns.
  order1 happens to be for checkPoint 20, therefore shelf A.  current items in order is 2, as its >= 5 items in shelf A, its assigned to Group 1.
  order2 is for shelf A, current items in shelf A is now 3, still not over 5, therefore Group 1.  and so on.
  order6 is for shelf A, current items in shelf A is now 6, as its >= 5 it gets assigned group 1 but it can no longer take on an orders in shelf A.
  order7 is for Shelf A, as it is full, it marks is as group 0.
  and so on.  same thing happens with shelf position B.

  the next wave of orders will come through, and will try to fill any open remaining shelf positions with orders.  this wave could include the orders missed in previous wave, as i will be selecting all orders where Group = 0.

  once all shelves have been filled (by exceeding 5 items and marking as full) , or no more remaining orders are for that checkPoint, then 4 new checkPoints will be allocated to the 4 shelf positions and they will get assigned Group ID = 2. 

  Hopefully i make sense.  This is similar to another post i created here (its for the same assignment) but i think this logic will work.

  Below is code for temp tables above.  By all means suggest a new way, i may not need some columns...

  Many thanks

  
SELECT *
INTO #ShelfPosition
FROM (VALUES
 ('A', 0,0,0),
 ('B', 0,0,0),
 ('C', 0,0,0),
 ('D', 0,0,0)
  )v(Shelf, CheckPoint, Items, isFull);


  
SELECT *
INTO #Orders
FROM (VALUES 
 (1, 2, 20),
 (2, 1, 20),
 (3, 4, 84),
 (4, 2, 12),
 (5, 1, 65),
 (6, 3, 20),
 (7, 1, 20),
 (8, 2, 84),
 (9, 2, 10),
 (10, 2, 5)
  )v(orderID, Items, CheckPoint);