Re: time stops within transaction

Tom Lane writes:

> Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> > Tom Lane writes:
> >> That is what now() is defined to return: transaction start time.
>
> > Then CURRENT_TIMESTAMP is in violation of SQL.
>
> Au contraire, if it did not behave that way it would violate the spec.
> See SQL92 6.8 general rule 3:
>
> 3) If an SQL-statement generally contains more than one reference
> to one or more <datetime value function>s, then all such ref-
> erences are effectively evaluated simultaneously. The time of
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> evaluation of the <datetime value function> during the execution
> of the SQL-statement is implementation-dependent.

statement != transaction

--
Peter Eisentraut peter_e(at)gmx(dot)net http://yi.org/peter-e/