subject:"\[Django\] #28668\: Add ON CONFLICT support to QuerySet.bulk

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-08-03 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  closed
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:  fixed
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Дилян Палаузов):

 It is good to see progress here but can this ticket be kept open until
 (for Postgres) also the possibility is implemented to return the IDs, and
 the possibility tonsend post_save?

 To what I remember .add() had also concurrent deficiencies, which could be
 solved with ON CONFLICT IGNORE, I am nkt sure they are addressed with the
 fix.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-08-03 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  closed
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:  fixed
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Tim Graham ):

 * status:  assigned => closed
 * resolution:   => fixed


Comment:

 In [changeset:"f1fbef6cd171ddfae41fcc901f1f60ccad039f51" f1fbef6]:
 {{{
 #!CommitTicketReference repository=""
 revision="f1fbef6cd171ddfae41fcc901f1f60ccad039f51"
 Fixed #28668 -- Allowed QuerySet.bulk_create() to ignore insert conflicts.
 }}}

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-07-26 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Дилян Палаузов):

 The contributor does not work currently with Django.  To expedite the
 process you can follow what was stated in the last comment.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-07-26 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by shlomoa):

 Replying to [comment:15 Tom Forbes]:
 > Hey, please create a branch on Github and submit a Pull Request with
 these changes if you want them to be reviewed and tested.

 Anyway to contact the contributor to expedite this?

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-19 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Tom Forbes):

 Hey, please create a branch on Github and submit a Pull Request with these
 changes if you want them to be reviewed and tested.

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Ticket URL: 
Django 
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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-19 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Дилян Палаузов):

 * Attachment "on_conflict_ignore.2.patch" added.


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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-16 Thread Django

* Attachment "on_conflict_ignore.patch" added.

The on_conflict_ignore.patch adds on_conflict='ignore' to
QuerySet.bulk_create and empowers bulk_create optionally to send post_save
signals, when the ID of the inserted object is known to bulk_create. For
postgresql bulk_create offers in addition to retrieve the IDs of the newly
inserted objects, when using on_conflict='ignore' and, with a second
query, to find the PKs pf the supplied objs that were already in the
databse. When supported by the backend (so not Oracle),
on_conflict='ignore' is added to bulk_create() in

django.db.models.fields.create_forward_many_to_many_manager.ManyRelatedManager._add_items,
making ManyRelatedManager.add() thread-safe, possibly resolving #19544.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-14 Thread Django

* Attachment "on_conflict_ignore.patch" added.

django.db.models.fields.create_forward_many_to_many_manager.ManyRelatedManager._add_items,
making ManyRelatedManager.add() thread-safe, possibly resolving #19544.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-13 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Дилян Палаузов):

 How essential is it, that objects inserted in the database, have their
 {{{._state.adding}}} and {{{._state.db}}} set?  The code from
 {{{bulk_create(..., on_conflict='ignore')}}} below is not called when
 ids=[], which happens when database does not return the IDs.

 {{{
 for obj_without_pk, pk in zip(objs_without_pk, ids):
 obj_without_pk.pk = pk
 obj_without_pk._state.adding = False
 obj_without_pk._state.db = self.db

 }}}

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-12 Thread Django

* Attachment "on_conflict_ignore.patch" added.

django.db.models.fields.create_forward_many_to_many_manager.ManyRelatedManager._add_items,
making ManyRelatedManager.add() thread-safe, possibly resolving #19544.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-12 Thread Django

* Attachment "on_conflict_ignore.patch" added.

django.db.models.fields.create_forward_many_to_many_manager.ManyRelatedManager._add_items,
making ManyRelatedManager.add() thread-safe, possibly resolving #19544.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-12 Thread Django

* Attachment "on_conflict_ignore.patch" added.

django.db.models.fields.create_forward_many_to_many_manager.ManyRelatedManager._add_items,
making ManyRelatedManager.add() thread-safe, possibly resolving #19544.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-12 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Дилян Палаузов):

 * Attachment "on_conflict_ignore.2.patch" added.


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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-12 Thread Django

* Attachment "on_conflict_ignore.patch" added.

django.db.models.fields.create_forward_many_to_many_manager.ManyRelatedManager._add_items,
making ManyRelatedManager.add() thread-safe, possibly resolving #19544.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-12 Thread Django

* Attachment "on_conflict_ignore.patch" added.

django.db.models.fields.create_forward_many_to_many_manager.ManyRelatedManager._add_items,
making ManyRelatedManager.add() thread-safe, possibly resolving #19544.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-03-09 Thread Django

* Attachment "on_conflict_ignore.patch" added.

django.db.models.fields.create_forward_many_to_many_manager.ManyRelatedManager._add_items,
making ManyRelatedManager.add() thread-safe, possibly resolving #19544. I
have the feeling reset_sequence = True doesn't work as expected, as the
IDs are random. This patch integrated the changes of om Forbes and
previous changes of me.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-02-28 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Tom Forbes):

 Hey, I recommend consolidating your patches into a single PR on Github and
 linking it here, that's the development process Django now follows.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-02-28 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Дилян Палаузов):

 * Attachment "on_conflict_postgresql_signals_ids.patch" added.

 In addition to the other file, this one add support for sending post_save
 for the newly created objects and retrieving the ids of the objects
 provided as parameters to bulk_create, that already existed in the
 database.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create() (was: Add support for ON CONFLICT to bulk_create)

2018-01-29 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Дилян Палаузов):

 * Attachment "on_conflict_postgresql.patch" removed.

 this adds INSERT ON CONFLICT IGNORE to Postgresql, where only IDs of the
 actually inserted rows are returned

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-01-29 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Дилян Палаузов):

 * Attachment "on_conflict_postgresql.patch" added.

 this adds INSERT ON CONFLICT IGNORE to Postgresql, where only IDs of the
 actually inserted rows are returned

-- 
Ticket URL: 
Django 
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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-01-26 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Дилян Палаузов):

 * Attachment "on_conflict_postgresql.patch" added.

 this adds INSERT ON CONFLICT IGNORE to Postgresql, where only IDs of the
 actually inserted rows are returned

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-01-25 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Дилян Палаузов):

 Let's start with the most complex case: calling
 {{{.objects.bulk_create(..., on_conflict='ignore')}}} where the caller
 wants to determine which of the supplied objects were actually inserted
 (in order to call signals on them).  We can start with the attached
 minimalistic patch, which does this for Postgresql as only RDBMS allowing
 efficient handling of this most complex case, and see how to implement it
 in the other RDBMs.

 Unfortunately, the sequence counter is automatically increased for each
 object provided as parameter, even if at the end the object was already in
 the database.

 I propose extending the logic for bulk_create to send implicit post_save
 signals for Postgresql.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2018-01-25 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Дилян Палаузов):

 * Attachment "on_conflict_postgresql.patch" added.

 this adds INSERT ON CONFLICT IGNORE to Postgresql, where only IDs of the
 actually inserted rows are returned

-- 
Ticket URL: 
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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2017-10-10 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Tim Graham):

 No, new features aren't backported to stable branches. See our
 [https://docs.djangoproject.com/en/dev/internals/release-process
 /#supported-versions supported versions policy].

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2017-10-10 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Chris Beck):

 Is there any consideration of this being included in a future 1.11.x
 release? I'd really like to be able to use bulk_create for a fire-hose of
 data that we're getting from a 3rd party who don't guarantee uniqueness so
 at the moment our only solution is to remove the unique_together attribute
 and enforce it at the reporting level.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2017-10-07 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Дилян Палаузов):

 For a table like {{{CREATE TABLE t (id SERIAL PRIMARY KEY, name
 VARCHAR(10) UNIQUE, comment VARCHAR(10));}}} it is possible to tell which
 models were inserted with a query like
 {{{
 WITH
   to_be_inserted AS (SELECT * FROM (VALUES ('name12', 'comment12'),
 ('name5', 'comment5'), ('name6', 'comment6')) as g(name, comment)),
   successfully_inserted AS (
   INSERT INTO t ("name", "comment" ) SELECT *
 FROM to_be_inserted ON CONFLICT DO NOTHING RETURNING *)
 SELECT s.id FROM to_be_inserted AS b
   LEFT JOIN successfully_inserted AS s ON (b.name = s.name AND b.comment =
 s.comment);
 }}}

 where {{{to_be_inserted}}} contains the values that are going into the
 database.  The returned column contains NULL for values that were
 presented in the database, and the id for the inserted rows.

 With the proposed changes
 {{{
 -if connection.features.can_return_ids_from_bulk_insert:
 +if connection.features.can_return_ids_from_bulk_insert
 and not on_conflict == 'ignore':
   assert len(ids) == len(objs_without_pk)
   for obj_without_pk, pk in zip(objs_without_pk, ids):
   obj_without_pk.pk = pk
 }}}
 the for-loop will not work, as the amount of ids is not the same as the
 amount of obj_without_pk.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2017-10-07 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Tom Forbes):

 I fixed that assertion by skipping returning ID's from the insert if
 `on_conflict` is used. They are incompatible, as you cannot tell which
 models where inserted and which where skipped.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2017-10-04 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Дилян Палаузов):

 * cc: Дилян Палаузов (added)


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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2017-10-03 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Tom Forbes):

 Good point, I'll fix it up tomorrow. There are some other issues I've
 found tonight as well.

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2017-10-03 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom Forbes   |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-

Comment (by Дилян Палаузов):

 Add documentation what bulk_create() is supposed to return.

 I assume this not going to work, as Postgresql has
 can_return_ids_from_bulk_insert, but 'INSERT ON CONFLICT DO NOTHING
 RETURNING id' returns only the ids of the inserted rows, so the assert
 will fail.  In particular not inserted rows are not returned.
 {{{
 -ids = self._batched_insert(objs_without_pk, fields,
 batch_size)
 +ids = self._batched_insert(objs_without_pk, fields,
 batch_size, on_conflict=on_conflict)
  if connection.features.can_return_ids_from_bulk_insert:
  assert len(ids) == len(objs_without_pk)
 }}}

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2017-10-02 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom  |Owner:  Tom
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Tom):

 * has_patch:  0 => 1


Comment:

 Initial PR: https://github.com/django/django/pull/9192

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

2017-10-02 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom  |Owner:  Tom
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Tom):

 * owner:  nobody => Tom
 * status:  new => assigned


Comment:

 If in the future we want to add support for `ON CONFLICT UPDATE` we should
 design the API with that in mind.

 Perhaps have `DO_NOTHING` as a sentinel object, so in the future we can
 pass in something else to describe updating (like a dictionary or
 somesuch?).

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create() (was: Add support for ON CONFLICT to bulk_create)

2017-10-02 Thread Django

#28668: Add ON CONFLICT support to QuerySet.bulk_create()
-+-
 Reporter:  Tom  |Owner:  nobody
 Type:  New feature  |   Status:  new
Component:  Database layer   |  Version:  master
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Tim Graham):

 * stage:  Unreviewed => Accepted


Old description:

> When using bulk_create it would be nice to support `ON CONFLICT DO
> NOTHING`, which allows existing rows to be included in the `bulk_create`
> call, e.g:
>
> {{{#!python
> Comment.objects.create(name='test', text='test')
> Comment.objects.bulk_create(Comment(name='test', text='test'),
> on_conflict=IGNORE)  # Does not throw an exception
> }}}
>
> All the databases we support have syntax for this, as well as
> updating/replacing fields.
>
> This is a spin-off of https://code.djangoproject.com/ticket/28641, just
> including the ON CONFLICT idea which is backwards-compatible and would be
> easier to implement than the others.

New description:

 When using bulk_create it would be nice to support `ON CONFLICT DO
 NOTHING`, which allows existing rows to be included in the `bulk_create`
 call, e.g:

 {{{#!python
 Comment.objects.create(name='test', text='test')
 Comment.objects.bulk_create(Comment(name='test', text='test'),
 on_conflict=IGNORE)  # Does not throw an exception
 }}}

 All the databases we support have syntax for this, as well as
 updating/replacing fields.

 This is a spin-off of #28641, just including the ON CONFLICT idea which is
 backwards-compatible and would be easier to implement than the others.

--

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Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create() (was: Add support for ON CONFLICT to bulk_create)

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create()

Re: [Django] #28668: Add ON CONFLICT support to QuerySet.bulk_create() (was: Add support for ON CONFLICT to bulk_create)

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