On 07-05-2013 19:46, skywind mailing lists wrote:
Hi,
my question is: is it guaranteed that it works?
Regards,
Hartwig
http://www.andrew.cmu.edu/user/shadow/sql/sql1992.txt
chapter: 13.9 <update statement: positioned>
6) The <value expression>s are effectively evaluated before updat-
ing the object row. If a <value expression> contains a
reference
to a column of T, then the reference is to the value of that
column in the object row before any value of the object row is
updated.
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