if it was for one column you could use nvl or decode
update tablea set firstname=nvl((select firstname from tableb where
tablea.id=tablea.id), firstname);
Alex Hillman
-----Original Message-----
Sent: Wednesday, May 30, 2001 3:56 PM
To: Multiple recipients of list ORACLE-L
Seems like Oracle Doesn't have to the query like this:
update tablea set firstname=tableb.firstname,
lastname=tableb.lastname
where tableb.id = tablea.id;
I can have one, it works if it has a match for the two
tables, otherwise the two columns updated to null:
update tablea set (firstname,lastname)
=(select firstname,lastname from tableb
where tableb.id=tablea.id);
Then the following one works, but very ugly:
update tablea set (firstname,lastname)
=(select firstname,lastname from tableb
where tableb.id=tablea.id)
where exists(
select 'x' from tableb
where tableb.id=tablea.id)
Any suggestions?
TIA
Chris Harvest
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