best way to get autogenerated primary key
Hi, this is my first post to this list, so forgive me if this is not the right place to post this. I tried to do my research (google, monetdb.org, python api help) but didn't find an answer.
How can I get the auto-generated primary key (integer) after executing an insert. I want to use it in a second insert to another table that references the first.
(in PostgreSQL I used the RETURNING clause for this)
thanks in advance Mate
The getGeneratedKeys() method on Statement and PreparedStatement should do the trick:
http://docs.oracle.com/javase/6/docs/api/java/sql/Statement.html#getGenerate...)
Cheers, Percy
On Mon, Jan 28, 2013 at 7:11 PM, Mate Birkas birkas@gmail.com wrote:
Hi, this is my first post to this list, so forgive me if this is not the right place to post this. I tried to do my research (google, monetdb.org, python api help) but didn't find an answer.
How can I get the auto-generated primary key (integer) after executing an insert. I want to use it in a second insert to another table that references the first.
(in PostgreSQL I used the RETURNING clause for this)
thanks in advance Mate
users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list
Thanks, but there seems to be no Statement class in the Python API. Any search on 'getGeneratedKeys' (google, grep over the source) yields nothing. Is there a way to do it in Python? Mate
On Tue, Jan 29, 2013 at 2:47 AM, Percy Wegmann percy@clicksecurity.comwrote:
The getGeneratedKeys() method on Statement and PreparedStatement should do the trick:
http://docs.oracle.com/javase/6/docs/api/java/sql/Statement.html#getGenerate...)
Cheers, Percy
On Mon, Jan 28, 2013 at 7:11 PM, Mate Birkas birkas@gmail.com wrote:
Hi, this is my first post to this list, so forgive me if this is not the right place to post this. I tried to do my research (google, monetdb.org, python api help) but didn't find an answer.
How can I get the auto-generated primary key (integer) after executing an insert. I want to use it in a second insert to another table that references the first.
(in PostgreSQL I used the RETURNING clause for this)
thanks in advance Mate
users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list
--
Percy Wegmann +1 512 637 8500 ext 148
users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list
Hi Mate,
I should learn to read :)
Try cursor.lastrowid.
I took a look at the implementation of the Java and Python APIs. The Java API looks for a Q_UPDATE header (int value 50) in the MAPI response to grab the last generated key. The cursors.py file mentions this same header and looks like it's putting a value in the field "lastrowid". So, you may try accessing lastrowid on the cursor object to see if that gets you what you need. I haven't actually used the Python API, so I'm just guessing based on the source code.
Cheers, Percy
On Mon, Jan 28, 2013 at 8:45 PM, Mate Birkas birkas@gmail.com wrote:
Thanks, but there seems to be no Statement class in the Python API. Any search on 'getGeneratedKeys' (google, grep over the source) yields nothing. Is there a way to do it in Python? Mate
On Tue, Jan 29, 2013 at 2:47 AM, Percy Wegmann percy@clicksecurity.comwrote:
The getGeneratedKeys() method on Statement and PreparedStatement should do the trick:
http://docs.oracle.com/javase/6/docs/api/java/sql/Statement.html#getGenerate...)
Cheers, Percy
On Mon, Jan 28, 2013 at 7:11 PM, Mate Birkas birkas@gmail.com wrote:
Hi, this is my first post to this list, so forgive me if this is not the right place to post this. I tried to do my research (google, monetdb.org, python api help) but didn't find an answer.
How can I get the auto-generated primary key (integer) after executing an insert. I want to use it in a second insert to another table that references the first.
(in PostgreSQL I used the RETURNING clause for this)
thanks in advance Mate
users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list
--
Percy Wegmann +1 512 637 8500 ext 148
users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list
users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list
Thanks Percy!
cursor.lastrowid is exactly what I was looking for. (And I learned that attribute docstrings are not presented by help() .) Next time I will read the source more thoroughly.
Thanks again! Mate
On Tue, Jan 29, 2013 at 4:34 AM, Percy Wegmann percy@clicksecurity.comwrote:
Hi Mate,
I should learn to read :)
Try cursor.lastrowid.
I took a look at the implementation of the Java and Python APIs. The Java API looks for a Q_UPDATE header (int value 50) in the MAPI response to grab the last generated key. The cursors.py file mentions this same header and looks like it's putting a value in the field "lastrowid". So, you may try accessing lastrowid on the cursor object to see if that gets you what you need. I haven't actually used the Python API, so I'm just guessing based on the source code.
Cheers, Percy
On Mon, Jan 28, 2013 at 8:45 PM, Mate Birkas birkas@gmail.com wrote:
Thanks, but there seems to be no Statement class in the Python API. Any search on 'getGeneratedKeys' (google, grep over the source) yields nothing. Is there a way to do it in Python? Mate
On Tue, Jan 29, 2013 at 2:47 AM, Percy Wegmann percy@clicksecurity.comwrote:
The getGeneratedKeys() method on Statement and PreparedStatement should do the trick:
http://docs.oracle.com/javase/6/docs/api/java/sql/Statement.html#getGenerate...)
Cheers, Percy
On Mon, Jan 28, 2013 at 7:11 PM, Mate Birkas birkas@gmail.com wrote:
Hi, this is my first post to this list, so forgive me if this is not the right place to post this. I tried to do my research (google, monetdb.org, python api help) but didn't find an answer.
How can I get the auto-generated primary key (integer) after executing an insert. I want to use it in a second insert to another table that references the first.
(in PostgreSQL I used the RETURNING clause for this)
thanks in advance Mate
users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list
--
Percy Wegmann +1 512 637 8500 ext 148
users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list
users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list
--
Percy Wegmann +1 512 637 8500 ext 148
users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list
On 01/29/2013 04:34 AM, Percy Wegmann wrote:
Hi Mate,
I should learn to read :)
Try cursor.lastrowid.
Yep. The MonetDB Python API follows PEP-0249:
http://www.python.org/dev/peps/pep-0249/#lastrowid
greetings,
participants (3)
-
Gijs Molenaar -
Mate Birkas -
Percy Wegmann