>is it possible to use a parameter of a plpgsql-function to order a
>selection
>inside the function?
You need to use the FOR-IN-EXECUTE style of query. That way
you can use any string you want (including text passed in as
a parameter) to build the query inside the function ...
http://www.postgresql.org/docs/7.4/static/plpgsql-control-structures.html
( it is the very last thing on that page )
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