Added to TODO: * Add MERGE command that does UPDATE, or on failure, INSERT
--------------------------------------------------------------------------- Christopher Kings-Lynne wrote: > >>Except you can keep trying and trying without the outermost transaction > >>failing. > > > > But that won't provide the necessary next key locking you mentioned in > > your first email, will it? > > No, but since I can loop an infinite number of times until either the > update or insert works, I don't need next key locking. > > BTW, the reference in MySQL: > > http://dev.mysql.com/doc/mysql/en/REPLACE.html > > Hmm...no refernce to next key locking. Maybe that's an Innodb thing... > > Anyway, you can see how they've implemented their algorithm. > > Here is docs on the DB2 merge command from which the standard was derived: > > http://databasejournal.com/features/db2/article.php/10896_3322041_2 > > Chris > > ---------------------------(end of broadcast)--------------------------- > TIP 9: the planner will ignore your desire to choose an index scan if your > joining column's datatypes do not match > -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings