Array in plpgsql with composite type

Hi Guys!

I need to make an array with composite type (varchar, float8) to get 
data from a table (description and price) BUT I am having no success... 
I searched a lot on the internet without success. On the PostgreSQL 
manual there is no information how to handle array with plpgsql with 
composite types. I tried to create a type (varchar, float8) but without 
success...

Can anyone send me some examples or references for arrays in plpgsql (I 
am using PostgreSQL 8.0.3).

Regards,

Rodrigo Carvalhaes

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