Ok Jon, > I am setting up a small bidding system. I have a table with one column for > "BID" and the other for "MAX_BID" with each row having a unique id number. > Anyone have a simple query example where I can select ID, BID, MAX_BID and > sort in descending order the BID and MAX_BID as if it were one column? > > Example_tbl > id bid max_bid > 1 .2 .4 > 2 .1 .2 > 3 .4 .0 > 4 .4 .7 > 5 .7 .7 > > Selecting the id and creating X_BID in the query result which is the > combined bid columns, ordering by the BID and MAX_BID > > Result_Set > ID X_BID > 5 .7 > 4 .7 > 3 .4 > 1 .4 > 2 .2 > > Make any sense ? Any thoughts on the AS and ORDER BY for this ?
=Yes it makes sense, except that you haven't defined the term "combined" for the bid columns. May I take it to mean 'max_bid if it exists, or bid otherwise'? =1 Code the SQL as if you were wanting to list Result_Set using only max_bid, and label (AS) the max_bid column "CombinedBid". =2 Now get the resultset into the desired sequence using CombinedBid. =3 Finally deal with the selection of either max_bid or bid in the CombinedBid column - if max_bid > 0, use max_bid, else use bid. - check out the manual for IF() =Let us know how you get on, =dn --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
