Fernando Grijalba <fgrijalba@xxxxxxxxx> writes: > Thank you for your response. > > I want to avoid the following situation. > > User1 starts order and takes the last two units. User2 starts order 1 > minute after and checks inventory. He sees 2 units left and adds them to > the his order. User1 commits his order. Now User2 cannot finish his > order because the products are not available anymore. > > This is the problem I want to avoid. Therefore if User1 takes the product > but does not finish the order I want the inventory to still show that the > product is sold out to other users. > > Any suggestions on how to implemnt that? I think just using SELECT FOR UPDATE should solve this problem--it will lock the row and SELECT FOR UPDATE in the second transaction won't return until the first transaction commits. -Doug ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
