Re: The trouble with dynamic plpgsql functions

On Fri, 2002-05-31 at 10:54, Динар wrote:
> Hello all!!!
> Is it bug or it is should be so???
>
> I made a dynamic function on plpgsql which calculates the time period
> in seconds for a given item. The calculation begins from now untill
> the time that is given in field. For the first time everything
> calculates ok, but the second query obtains the same result.
>
> For example I have to calculate time period in seconds from now to
> 20:00.
> now 10:00. I run query and obtain 36000 seconds.
>
> after 1 minute I run query and also obtain the same result.
>
> I checked it twice the function is not cachable.
>
> What is wrong here???
>


You must be using functions such as now() or CURRENT_TIMESTAMP which
always return the same value within one transaction.

If you want real time within a transaction you must use timeofday().

--
Oliver Elphick                                Oliver.Elphick@lfix.co.uk
Isle of Wight                              http://www.lfix.co.uk/oliver
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