On 2003-02-18 20:02:29 +0100, Peter Eisentraut wrote: > Christopher Kings-Lynne writes: > > > REPLACE INTO anyone? ;) > > The upcoming SQL 200x standard includes a MERGE command that appears to > fulfill that purpose. >
MySQL features a poor-mans aproach to this problem, their REPLACE command: http://www.mysql.com/doc/en/REPLACE.html REPLACE works exactly like INSERT, except that if an old record in the table has the same value as a new record on a UNIQUE index or PRIMARY KEY, the old record is deleted before the new record is inserted. I'd love to see this kind of functionality in PG, I've got a database that caches data which only gets conditional INSERT/UPDATEs, so that would save a lot of wasted SQL commands. Vincent van Leeuwen Media Design ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])
