下面基于https://code.djangoproject.com/ticket/17741:返回有效的SQL查询

def str_query(qs):
    """
    qs.query returns something that isn't valid SQL, this returns the actual
    valid SQL that's executed: https://code.djangoproject.com/ticket/17741
    """
    cursor = connections[qs.db].cursor()
    query, params = qs.query.sql_with_params()
    cursor.execute('EXPLAIN ' + query, params)
    res = str(cursor.db.ops.last_executed_query(cursor, query, params))
    assert res.startswith('EXPLAIN ')
    return res[len('EXPLAIN '):]

查询实际上嵌入在模型API中:

q = Query.objects.values('val1','val2','val_etc')

print(q.query)

使用django.db.connection.queries查看查询

from django.db import connection
print(connection.queries)

访问QuerySet对象上的原始SQL查询

 qs = MyModel.objects.all()
 print(qs.query)

你可以使用连接。在Django中运行原始SQL查询，如下所示:

# "store/views.py"

from django.db import transaction
from .models import Person
from django.db import connection
from django.http import HttpResponse

@transaction.atomic
def test(request):
    Person.objects.create(name="John") # INSERT
    
    qs = Person.objects.select_for_update().get(name="John") # SELECT FOR UPDATE
    qs.name = "Tom"
    qs.save() # UPDATE
    qs.delete() # DELETE
                 
    for query in connection.queries: # Here
        print(query)

    return HttpResponse("Test")

然后，原始查询打印在控制台，如下所示:

{'sql': 'INSERT INTO "store_person" ("name") VALUES (\'John\') RETURNING "store_person"."id"', 'time': '0.000'}
{'sql': 'SELECT "store_person"."id", "store_person"."name" FROM "store_person" WHERE "store_person"."name" = \'John\' LIMIT 21 FOR UPDATE', 'time': '0.000'}      
{'sql': 'UPDATE "store_person" SET "name" = \'Tom\' WHERE "store_person"."id" = 179', 'time': '0.000'}
{'sql': 'DELETE FROM "store_person" WHERE "store_person"."id" IN (179)', 'time': '0.000'}
[24/Dec/2022 06:29:32] "GET /store/test/ HTTP/1.1" 200 9

然后，把reset_queries()放在Person.objects.select_for_update()之后，如果你想只得到UPDATE和DELETE查询，而没有INSERT和SELECT FOR UPDATE查询，如下所示:

# "store/views.py"

from django.db import transaction
from .models import Person
from django.db import reset_queries
from django.db import connection
from django.http import HttpResponse

@transaction.atomic
def test(request):
    Person.objects.create(name="John") # INSERT
    
    qs = Person.objects.select_for_update().get(name="John") # SELECT FOR UPDATE
    reset_queries() # Here
    qs.name = "Tom"
    qs.save() # UPDATE
    qs.delete() # DELETE
                 
    for query in connection.queries: # Here
        print(query)

    return HttpResponse("Test")

然后，只打印UPDATE和DELETE查询，不打印INSERT和SELECT FOR UPDATE查询，如下所示:

{'sql': 'UPDATE "store_person" SET "name" = \'Tom\' WHERE "store_person"."id" = 190', 'time': '0.000'}
{'sql': 'DELETE FROM "store_person" WHERE "store_person"."id" IN (190)', 'time': '0.000'}
[24/Dec/2022 07:00:01] "GET /store/test/ HTTP/1.1" 200 9

对于Django 2.2:

当我使用。/manage.py shell时，大多数答案对我没有多大帮助。最后我找到了答案。希望这能对别人有所帮助。

查询所有查询信息。

from django.db import connection
connection.queries

查看单个查询的查询:

q=Query.objects.all()
q.query.__str__()

q。query只是为我显示对象。 使用__str__()(字符串表示)显示完整的查询。

请参阅文档常见问题:“如何查看Django正在运行的原始SQL查询?”

django.db.connection.queries包含一个SQL查询列表:

from django.db import connection
print(connection.queries)

queryset也有一个包含要执行的查询的query属性:

print(MyModel.objects.filter(name="my name").query)

注意，查询的输出不是有效的SQL，因为:

Django从未真正插入参数:它将查询和参数分别发送到数据库适配器，由数据库适配器执行适当的操作。

来自Django错误报告#17741。

因此，不应该将查询输出直接发送到数据库。

如果你需要重置查询，例如，查看在给定的时间内有多少查询在运行，你可以使用reset_queries from django.db:

from django.db import reset_queries
from django.db import connection

reset_queries()
# Run your query here
print(connection.queries)
>>> []