On 06/02/2015 12:33 PM, Filipe Pina wrote:
Basically, in an (maybe-over)simplified example:
CREATE OR REPLACE FUNCTION add_transaction(transaction core_transaction)
RETURNS integer AS $$
DECLARE
transaction2 core_transaction;
BEGIN
transaction.field1 := 'lapse’;
transaction2.field2 := transaction.field2;
transaction2.field1 := 'lapse2’;
INSERT INTO core_transaction VALUES(transaction.*);
INSERT INTO core_transaction VALUES(transaction2.*);
RETURN 1;
END
$$
LANGUAGE plpgsql;
So, I wanted to do the same in plpython…
CREATE OR REPLACE FUNCTION add_transaction(transaction core_transaction)
RETURNS integer AS $$
transaction['field1'] = ‘lapse’
transaction2 = { ‘field1’: ‘lapse2’, ‘field2’: transaction[‘field1’] }
# not this but something that would work without enumericating all
columns/fields
pl = plpy.execute('INSERT INTO core_transaction VALUES(transaction.*)’)
pl = plpy.execute('INSERT INTO core_transaction
VALUES(transaction2.*)')
return 1
END
$$
LANGUAGE plpythonu;
Yea, I do not see a way of doing that. plpgsql is more tightly coupled
to Postgres then plpythonu, so you get a lot more shortcuts. This why I
tend to use plpgsql even though I prefer programming in Python. That
being said, the feature set of plpythonu has been extended a good deal
over the last couple of Postgres versions and I would expect that to
continue.
On 02/06/2015, at 15:51, Adrian Klaver <adrian.klaver@xxxxxxxxxxx
<mailto:adrian.klaver@xxxxxxxxxxx>> wrote:
On 06/02/2015 03:10 AM, Filipe Pina wrote:
HI Adrian,
I had a typo in the email:
INSERT INTO my_table VALUES(my_table.*);
was actually
INSERT INTO my_table VALUES(my_var.*);
Aah, that is different:)
So I meant to insert the variable I had in memory (dict representing
a row), not the rows from the table..
So where is the variable getting its data?
Or can we see a simple example of what you are trying to do?
On 02/06/2015, at 01:44, Adrian Klaver <adrian.klaver@xxxxxxxxxxx
<mailto:adrian.klaver@xxxxxxxxxxx>> wrote:
On 06/01/2015 07:42 AM, Filipe Pina wrote:
Thanks for the reply anyway, it's a pity though, it'd be useful..
Another bump I've found along the pl/python road: insert ROWTYPE in
table..
Maybe you have some hint on that? :)
So, in PLPGSQL I can:
DECLARE
my_var my_table;
BEGIN
my_var.col1 := 'asd';
INSERT INTO my_table VALUES(my_table.*);
END;
How would I do something like that in pl/python?
First, how to declare a ROW-TYPE variable, as they're all python
mappings?
my_var = { 'col1': 'asd' } enough? it'd would miss all the other
columns...
Second, how to insert it?
plpy.prepare and .execute say they don't support composite types, so I
cannot simply pass
pl = plpy.prepare('INSERT INTO core_customer VALUES ($1)',
['my_table'])
Any workarounds for this? (meaning I wouldn't have to specify any
columns in the insert statement)
http://www.postgresql.org/docs/9.4/interactive/sql-insert.html
pl = plpy.prepare('INSERT INTO core_table SELECT * FROM my_table')
Thanks
On Sex, Mai 29, 2015 at 2:00 , Peter Eisentraut <peter_e@xxxxxxx>
wrote:
On 5/18/15 10:52 AM, Filipe Pina wrote:
But one of the functions I need to create needs to accept an array
of records.
PL/Python doesn't support that. Some more code needs to be written to
support that. You did everything correctly. I don't know of a good
workaround.
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx <mailto:adrian.klaver@xxxxxxxxxxx>
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx
--
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general
