A. Kretschmer wrote:
am Thu, dem 28.06.2007, um 16:16:50 +1000 mailte Chris folgendes:
Is there a better way to write the update? I thought about something
like this (but couldn't get it working - guess I don't have the right
syntax):
update t1 set domainname=(select id, SUBSTRING(emailaddress FROM
POSITION('@' IN emailaddress)) from table t2) AS t2 where t1.id=t2.id
test=# select * from foo;
id | mail | domain
----+-------------+--------
1 | foo@xxxxxxx |
2 | bar@xxxxxxx |
(2 rows)
test=*# update foo set domain=SUBSTRING(mail FROM (POSITION('@' IN
mail)+1));
That's what my original query is (apart from the +1 at the end) ;)
I was just trying to approach it differently with the other attempt.
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