Re: [SQL] Select Maths

[Phillip Smith]

Example: Funcation pqty(stock.code) calculates a value of 0 for a particular product. This fails the last CASE that makes sure the pqty() value is greater than our Usage Rate * Review Cycle – in this case is 3. But that is less than our Minimum Order Qty (First CASE) and not a multiple of our Box Qty (Second CASE) Another example could be that pqty() calculates less than the Minimum Order Qty (fails first CASE) so we raise it to the Minimum Order Qty, but that new value could fail either or both of the second CASE’s. Minimum Order Qty = stock.purchase_unit Box Qty = stock.box_qty I guess a better way to word it is that because pqty() returns a calculated value each time and I can’t take that value and assign it to a variable, then use that variable. If I was writing VB or similar I’d want something like: intPurchaseQty = pqty(stock.code) CASE  WHEN intPurchaseQty < stock.purchase_unit THEN intPurchaseQty = stock.purchase_unit WHEN MOD(intPurchaseQty, stock.box_qty) > 0 THEN intPurchaseQty = stock.box_qty * ROUND(CAST(intPurchaseQty AS DOUBLE PRECISION) / stock.box_qty) WHEN intPurchaseQty < (urate(stock.code) * creditors.review_cycle) THEN intPurchaseQty = urate(stock.code) * creditors.review_cycle END COLUMN = intPurchaseQty AS "pqty", I hope that makes it a lighter shade of mud!!   -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aaron Bono Sent: Tuesday, 11 July 2006 02:36 To: Phillip Smith Cc: pgsql-sql@postgresql.org Subject: Re: [SQL] Select Maths Can you provide example values and show where it is and is not working?  I am not quite sure what you are trying to do here. -Aaron    *******************Confidentiality and Privilege Notice******************* The material contained in this message is privileged and confidential to the addressee. If you are not the addressee indicated in this message or responsible for delivery of the message to such person, you may not copy or deliver this message to anyone, and you should destroy it and kindly notify the sender by reply email. Information in this message that does not relate to the official business of Weatherbeeta must be treated as neither given nor endorsed by Weatherbeeta. Weatherbeeta, its employees, contractors or associates shall not be liable for direct, indirect or consequential loss arising from transmission of this message or any attachments