Below is a method in Postgres for assigning multiple values in an UPDATE from a single query. It uses the "UPDATE ... FROM" syntax that Postgres supports; I think this can help in the Oracle conversion.
--------------------------------------------------------------------------- ----- Forwarded message from Robert Treat ----- On Monday 19 January 2009 18:13:51 Bruce Momjian wrote: > Thomas Kellerer wrote: > > A B wrote on 18.01.2009 22:43: > > > From the docs: > > > http://www.postgresql.org/docs/8.3/interactive/sql-update.html > > > > > > "According to the standard, the column-list syntax should allow a list > > > of columns to be assigned from a single row-valued expression, such as > > > a sub-select: > > > UPDATE accounts SET (contact_last_name, contact_first_name) = > > > (SELECT last_name, first_name FROM salesmen > > > WHERE salesmen.id = accounts.sales_id); > > > This is not currently implemented ? the source must be a list of > > > independent expressions." > > > > > > Is this feature going into postgresql any day soon? :-) > > > > It's on the TODO list: > > > > http://wiki.postgresql.org/wiki/Todo#UPDATE > > Also, I don't know if anyone working on this item for 8.4 or 8.5. > Probably because there is a work-around... UPDATE accounts SET contact_last_name = x.last_name, set contact_first_name = x.first_name FROM (select last_name, first_name from salesmen where salesmen.id = accounts.sales_id) x Which is great if you just want to get this done, but sucks if you wanted the specific syntax from above. -- Robert Treat Conjecture: http://www.xzilla.net Consulting: http://www.omniti.com ----- End of forwarded message from Robert Treat ----- -- Bruce Momjian <[email protected]> http://momjian.us EnterpriseDB http://enterprisedb.com + If your life is a hard drive, Christ can be your backup. + _______________________________________________ Spacewalk-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/spacewalk-devel
