#21604: Embed raw queries as subqueries when used with an __in filter
-------------------------------------+-------------------------------------
Reporter: alex@… | Owner: nobody
Type: New feature | Status: new
Component: Database layer | Version: dev
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 1
Easy pickings: 0 | UI/UX: 0
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Comment (by Simon Charette):
Andreas, if this is something you'd like to see in Django
[https://docs.djangoproject.com/en/4.1/internals/contributing/writing-
code/ you could give a shot submitting a PR] based on the approach
described in comment:3
Something along these lines, with regression tests, should get you almost
all the way there
{{{#!diff
diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py
index c2a71ff589..4845ae9e90 100644
--- a/django/db/models/sql/query.py
+++ b/django/db/models/sql/query.py
@@ -82,6 +82,8 @@ def get_children_from_q(q):
class RawQuery:
"""A single raw SQL query."""
+ has_select_fields = True
+
def __init__(self, sql, using, params=()):
self.params = params
self.sql = sql
@@ -151,6 +153,9 @@ def _execute_query(self):
self.cursor = connection.cursor()
self.cursor.execute(self.sql, params)
+ def as_sql(self, compiler, connection):
+ return self.sql, self.params
+
ExplainInfo = namedtuple("ExplainInfo", ("format", "options"))
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/21604#comment:5>
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