Re: [Django] #23646: query set sql update to change different values by different keys (include django-bulk-update in core)

2018-02-13 Thread Django 
#23646: query set sql update to change different values by different keys 
(include
django-bulk-update in core)
-+-
 Reporter:  Brillgen Developers  |Owner:  Tom
 |  Forbes
 Type:  New feature  |   Status:  assigned
Component:  Database layer   |  Version:  1.9
  (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 Forbes):

 * cc: Tom Forbes (added)
 * owner:  nobody => Tom Forbes
 * status:  new => assigned


Comment:

 Sorry for the duplicate, I'm not sure how my search missed this. I've got
 a patch that implements this at a basic level, there are some small
 optimizations that could be done at a later stage (including adding
 Postgres specific syntax).

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Re: [Django] #23646: query set sql update to change different values by different keys (include django-bulk-update in core)

2018-02-13 Thread Django 
#23646: query set sql update to change different values by different keys 
(include
django-bulk-update in core)
-+-
 Reporter:  Brillgen Developers  |Owner:  nobody
 Type:  New feature  |   Status:  new
Component:  Database layer   |  Version:  1.9
  (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 Tim Graham):

 * has_patch:  0 => 1


Comment:

 #29037 is a duplicate with [https://github.com/django/django/pull/9606 a
 patch].

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Re: [Django] #23646: query set sql update to change different values by different keys (include django-bulk-update in core)

2016-05-12 Thread Django 
#23646: query set sql update to change different values by different keys 
(include
django-bulk-update in core)
-+-
 Reporter:  brillgen |Owner:  nobody
 Type:  New feature  |   Status:  new
Component:  Database layer   |  Version:  1.9
  (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 timgraham):

 * stage:  Unreviewed => Accepted


Comment:

 Tentatively accepting, pending discussion on the DevelopersMailingList to
 approve the idea and API.

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Ticket URL: 
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Re: [Django] #23646: query set sql update to change different values by different keys (include django-bulk-update in core) (was: query set sql update to change different values by different keys)

2016-05-11 Thread Django 
#23646: query set sql update to change different values by different keys 
(include
django-bulk-update in core)
-+-
 Reporter:  brillgen |Owner:  nobody
 Type:  New feature  |   Status:  new
Component:  Database layer   |  Version:  1.9
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:
 |  Unreviewed
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by brillgen):

 * version:  1.7 => 1.9


Old description:

> Database backends like Postgresql support doing multiple value update for
> the same field in different rows using a single update query. Please see
> this sample below:
>
> http://stackoverflow.com/questions/18797608/update-multiple-rows-in-same-
> query-using-postgresql
>
> Example:
> Currently:
> {{{
> Books.objects.all().update(price=10)
> }}}
>
> Proposed (syntax can vary):
> {{{
> Books.objects.all().update({'pk': 1, 'price': 10}, {'pk': 2, 'price':
> 25}])
> }}}
>
> Idea is to do it in sql for performance reasons but still use the ORM and
> not use a raw database connection.
>
> However, such an interface is not exposed via the Django ORM. Would this
> be accepted as a patch? if so, would a list dictionary with the various
> fields:values to be updated be a good way to provide the input to ORM

New description:

 **Update**
 django-bulk-upate (​https://github.com/aykut/django-bulk-update) which
 could/should be integrated into django core since we have a bulk_create
 and this corresponds well with the save (could be called bulk save if it
 makes sense). App works with an identical api to bulk_create and so should
 be a good candidate to be considered for inclusion in core.

 Database backends like Postgresql support doing multiple value update for
 the same field in different rows using a single update query. Please see
 this sample below:

 http://stackoverflow.com/questions/18797608/update-multiple-rows-in-same-
 query-using-postgresql

 Example:
 Currently:
 {{{
 Books.objects.all().update(price=10)
 }}}

 Proposed (syntax can vary):
 {{{
 Books.objects.all().update({'pk': 1, 'price': 10}, {'pk': 2, 'price':
 25}])
 }}}

 Idea is to do it in sql for performance reasons but still use the ORM and
 not use a raw database connection.

 However, such an interface is not exposed via the Django ORM. Would this
 be accepted as a patch? if so, would a list dictionary with the various
 fields:values to be updated be a good way to provide the input to ORM

--

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Ticket URL: 
Django 
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