Hi,
I'm just trying to figure out what's possible with Postgresql and Python. One
thing that's important for me, would be to pass result sets around to process
them further. I have a table like this:
create table fps (
docid integer,
conceptid integer,
rank float4
)
And the following function:
create or replace function vectormatch(data fps[])
returns table(docid integer, weigth float4)
as $$
plpy.notice(type(data))
plpy.notice(data)
...
$$ language plpythonu;
I call the function like this:
select * from vectormatch(array(select (docid,conceptid,rank)::fps from fps
where docid = 4205591))
and get the following output:
NOTICE: <type 'list'>
CONTEXT: PL/Python function "vectormatch"
NOTICE: ['(4205591,1,1)', '(4205591,1219,1)', ...]
CONTEXT: PL/Python function "vectormatch"
I'm quite surprised that there are strings in the list and not tuples!? I tried
my best, but I have no idea what I might be doing wrong. The main purpose of my
sample/experiment is, to pass the results of a query to a function and to
process it there. Any hint would be very appreciated.
cheers,
Achim
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