Hello Thomas,
>> Thanks a lot! I just noticed that my postgresql is 8.3(unnest
>> function is not there by default). Is there a way that I could
>> download and load only this function from somewhere?
>
>
> Are you aware that 8.3 will be de-suppported as of next month?
>
> You should really think about an upgrade *now*
>
http://www.postgresql.org/support/versioning/
Although 8.3 reaches EOL date, it says that "Supported=Yes" for 8.3.
I believe that "Supported" would be fine, wouldn't it?
Emi