I'm using postgresql 9.6. I build a function where i do a "selec"t like :
id = TD["new"]["id"]
qry = plpy.prepare ("SELECT (decode->>'key')::integer AS key FROM table where id = $1;", ["int"])
res= plpy.execute(qry,[id])
The request work fine, but the result hold key and value, not only value. In fact, the result is like that : {"key":2937}
I want just the value.
The result object emulates a list or dictionary object. The result object can be accessed by row number and column name.
create or replace function pf()
returns integer as $$
query = 'select 1 as key'
rs = plpy.execute(query)
plpy.notice(rs.__str__())
return rs[0]['key']
$$ language plpythonu;
select pf();
NOTICE: <PLyResult status=5 nrows=1 rows=[{'key': 1}]>
pf
----
1
https://www.postgresql.org/docs/current/static/plpython-database.html