On Friday 07 July 2006 11:29, Gary Stainburn wrote: > I know this is probably a FAQ but Google etc hasn't helped. > > I have two tables, both with stock number and registration number in. > The second table always has the correct stock number, the first doesn't. > > I want to copy the data across where the stock number is missing. The > select with join shows the rows requiring update, but I can't think how to > do the update. >
I came up with: goole=# update test1 set ud_stock=(select s_stock_no from test2 where test1.ud_registration = test2.s_regno) where ud_stock ~ '^[NU][LD]$'; UPDATE 679 but as you can see, it updated a hell of a lot more than 21 rows. Can anyone improve on this? Gary -- Gary Stainburn This email does not contain private or confidential material as it may be snooped on by interested government parties for unknown and undisclosed purposes - Regulation of Investigatory Powers Act, 2000 ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
