Re: [SQL] Select Maths

[Phillip Smith]

Beautiful – Works a treat. Thanks Aaron.   A follow-on problem now… I have the below column in the select, but I need to validate the value across all 3 rules –  I need to assign it to a variable!!   Example – my pqty function calculates a value less than the suppliers minimum order qty (and therefore fails the first CASE below), I need to set the column to a new value (stock.purchase_unit) – That’s all OK. But I need to check this new value against the remaining 2 CASE’s…   <SNIP> CASE  WHEN pqty(stock.code) < stock.purchase_unit THEN stock.purchase_unit             --^^^-- Check that our suggested purchase qty is greater than then suppliers minimum order qty       WHEN MOD(pqty(stock.code), stock.box_qty) > 0 THEN stock.box_qty * ROUND(CAST(pqty(stock.code) AS DOUBLE PRECISION) / stock.box_qty)             --^^^-- Check that our suggested purchase qty is a multiple of the box qty       WHEN pqty(stock.code) < (urate(stock.code) * creditors.review_cycle) THEN urate(stock.code) * creditors.review_cycle             --^^^-- Check that our suggested purchase qty is greater than our Usage Rate x Creditor Review Cycle END AS "pqty", <SNIP>   Thanks again for all your help guys, -p   -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aaron Bono Sent: Friday, 7 July 2006 18:37 To: Phillip Smith Cc: pgsql-sql@postgresql.org Subject: Re: [SQL] Select Maths   On 7/7/06, Phillip Smith <[EMAIL PROTECTED]> wrote: Same SELECT query as before, different area of it… I have a function that calculates the recommended purchase order quantity for a stock item based off various other values and functions: pqty(stock.code) AS "pqty"   This needs to be rounded up / down to the nearest multiple of the purchase unit quantity for that product – It's Friday afternoon and my head has refused to help me work out the maths all afternoon!   Example:      Pqty = 60      Purchase Unit = 25 Pqty needs to be rounded down to 50.   I guess I'm also asking if I should do this in the Pqty function or in the SELECT query to optimize the result? select 25 * round(cast(60 as double precision) / 25)   *******************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