Mixing
Django Queryset Batches
1
I have a Django app that runs on SQL Server. SQL Server allows a maximum of 2,100 parameters in a user-defined function. I have a Django view with a queryset that should return 10,000 results when called:
def result_list(request):
results = MyModel.objects.filter(~(Q(importantField='') | Q(importantField='Some Text'))).select_related('field','field2','field3','field4').prefetch_related('anotherField')
return render(request, 'results/result_list.html', {'results':results})
I have a template that attempts to return those 10,000 results
{% for result in results %}
<!-- put results into an HTML table -->
{% endfor %}
Error:
Request Method: GET
Request URL: https://server/results/result_list
Django Version: 1.11.3
Python Version: 3.6.3
Traceback:
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagessql_serverpyodbcbase.py" in execute
545. return self.cursor.execute(sql, params)
The above exception (('07002', '[07002] [Microsoft][SQL Server Native Client 11.0]COUNT field incorrect or syntax error (0) (SQLExecDirectW)')) was the direct cause of the following exception:
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersexception.py" in inner
41. response = get_response(request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersbase.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersbase.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocontribauthdecorators.py" in _wrapped_view
23. return view_func(request, *args, **kwargs)
File "D:Websitesprojectappviews.py" in result_list
476. return render(request, 'results/result_list.html', {'results':results})
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangoshortcuts.py" in render
30. content = loader.render_to_string(template_name, context, request, using=using)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader.py" in render_to_string
68. return template.render(context, request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebackendsdjango.py" in render
66. return self.template.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
207. return self._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
177. return compiled_parent._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
72. result = block.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
216. return template.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
209. return self._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatedefaulttags.py" in render
173. len_values = len(values)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __len__
232. self._fetch_all()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _fetch_all
1120. self._prefetch_related_objects()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _prefetch_related_objects
675. prefetch_related_objects(self._result_cache, *self._prefetch_related_lookups)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in prefetch_related_objects
1469. obj_list, additional_lookups = prefetch_one_level(obj_list, prefetcher, lookup, level)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in prefetch_one_level
1599. all_related_objects = list(rel_qs)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __iter__
250. self._fetch_all()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _fetch_all
1118. self._result_cache = list(self._iterable_class(self))
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __iter__
53. results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelssqlcompiler.py" in execute_sql
886. raise original_exception
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelssqlcompiler.py" in execute_sql
876. cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
80. return super(CursorDebugWrapper, self).execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbutils.py" in __exit__
94. six.reraise(dj_exc_type, dj_exc_value, traceback)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangoutilssix.py" in reraise
685. raise value.with_traceback(tb)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagessql_serverpyodbcbase.py" in execute
545. return self.cursor.execute(sql, params)
Exception Type: Error at /djangoProject/results/result_list
Exception Value: ('07002', '[07002] [Microsoft][SQL Server Native Client 11.0]COUNT field incorrect or syntax error (0) (SQLExecDirectW)')
How do I change my view and/or template to batch the ORM query to get around the limit on parameters?
I know the iterator exists, but I believe that queries the database individually for each record, rather than batching queries for every 1,000 or 2,000 records.
I can slice the queryset by adding [:1000] to the end, but I'm not sure how to incorporate that into a loop that unions all of the slices together.
python sql
sql-server django python-3.x asked Nov 20 '18 at 18:15
OverflowingTheGlassOverflowingTheGlass
788523
add a comment |
1
I have a Django app that runs on SQL Server. SQL Server allows a maximum of 2,100 parameters in a user-defined function. I have a Django view with a queryset that should return 10,000 results when called:
def result_list(request):
results = MyModel.objects.filter(~(Q(importantField='') | Q(importantField='Some Text'))).select_related('field','field2','field3','field4').prefetch_related('anotherField')
return render(request, 'results/result_list.html', {'results':results})
I have a template that attempts to return those 10,000 results
{% for result in results %}
<!-- put results into an HTML table -->
{% endfor %}
Error:
Request Method: GET
Request URL: https://server/results/result_list
Django Version: 1.11.3
Python Version: 3.6.3
Traceback:
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagessql_serverpyodbcbase.py" in execute
545. return self.cursor.execute(sql, params)
The above exception (('07002', '[07002] [Microsoft][SQL Server Native Client 11.0]COUNT field incorrect or syntax error (0) (SQLExecDirectW)')) was the direct cause of the following exception:
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersexception.py" in inner
41. response = get_response(request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersbase.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersbase.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocontribauthdecorators.py" in _wrapped_view
23. return view_func(request, *args, **kwargs)
File "D:Websitesprojectappviews.py" in result_list
476. return render(request, 'results/result_list.html', {'results':results})
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangoshortcuts.py" in render
30. content = loader.render_to_string(template_name, context, request, using=using)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader.py" in render_to_string
68. return template.render(context, request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebackendsdjango.py" in render
66. return self.template.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
207. return self._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
177. return compiled_parent._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
72. result = block.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
216. return template.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
209. return self._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatedefaulttags.py" in render
173. len_values = len(values)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __len__
232. self._fetch_all()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _fetch_all
1120. self._prefetch_related_objects()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _prefetch_related_objects
675. prefetch_related_objects(self._result_cache, *self._prefetch_related_lookups)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in prefetch_related_objects
1469. obj_list, additional_lookups = prefetch_one_level(obj_list, prefetcher, lookup, level)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in prefetch_one_level
1599. all_related_objects = list(rel_qs)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __iter__
250. self._fetch_all()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _fetch_all
1118. self._result_cache = list(self._iterable_class(self))
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __iter__
53. results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelssqlcompiler.py" in execute_sql
886. raise original_exception
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelssqlcompiler.py" in execute_sql
876. cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
80. return super(CursorDebugWrapper, self).execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbutils.py" in __exit__
94. six.reraise(dj_exc_type, dj_exc_value, traceback)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangoutilssix.py" in reraise
685. raise value.with_traceback(tb)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagessql_serverpyodbcbase.py" in execute
545. return self.cursor.execute(sql, params)
Exception Type: Error at /djangoProject/results/result_list
Exception Value: ('07002', '[07002] [Microsoft][SQL Server Native Client 11.0]COUNT field incorrect or syntax error (0) (SQLExecDirectW)')
How do I change my view and/or template to batch the ORM query to get around the limit on parameters?
I know the iterator exists, but I believe that queries the database individually for each record, rather than batching queries for every 1,000 or 2,000 records.
I can slice the queryset by adding [:1000] to the end, but I'm not sure how to incorporate that into a loop that unions all of the slices together.
python sql
sql-server django python-3.x asked Nov 20 '18 at 18:15
OverflowingTheGlassOverflowingTheGlass
788523
add a comment |
1
1
1
I have a Django app that runs on SQL Server. SQL Server allows a maximum of 2,100 parameters in a user-defined function. I have a Django view with a queryset that should return 10,000 results when called:
def result_list(request):
results = MyModel.objects.filter(~(Q(importantField='') | Q(importantField='Some Text'))).select_related('field','field2','field3','field4').prefetch_related('anotherField')
return render(request, 'results/result_list.html', {'results':results})
I have a template that attempts to return those 10,000 results
{% for result in results %}
<!-- put results into an HTML table -->
{% endfor %}
Error:
Request Method: GET
Request URL: https://server/results/result_list
Django Version: 1.11.3
Python Version: 3.6.3
Traceback:
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagessql_serverpyodbcbase.py" in execute
545. return self.cursor.execute(sql, params)
The above exception (('07002', '[07002] [Microsoft][SQL Server Native Client 11.0]COUNT field incorrect or syntax error (0) (SQLExecDirectW)')) was the direct cause of the following exception:
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersexception.py" in inner
41. response = get_response(request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersbase.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersbase.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocontribauthdecorators.py" in _wrapped_view
23. return view_func(request, *args, **kwargs)
File "D:Websitesprojectappviews.py" in result_list
476. return render(request, 'results/result_list.html', {'results':results})
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangoshortcuts.py" in render
30. content = loader.render_to_string(template_name, context, request, using=using)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader.py" in render_to_string
68. return template.render(context, request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebackendsdjango.py" in render
66. return self.template.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
207. return self._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
177. return compiled_parent._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
72. result = block.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
216. return template.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
209. return self._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatedefaulttags.py" in render
173. len_values = len(values)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __len__
232. self._fetch_all()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _fetch_all
1120. self._prefetch_related_objects()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _prefetch_related_objects
675. prefetch_related_objects(self._result_cache, *self._prefetch_related_lookups)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in prefetch_related_objects
1469. obj_list, additional_lookups = prefetch_one_level(obj_list, prefetcher, lookup, level)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in prefetch_one_level
1599. all_related_objects = list(rel_qs)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __iter__
250. self._fetch_all()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _fetch_all
1118. self._result_cache = list(self._iterable_class(self))
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __iter__
53. results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelssqlcompiler.py" in execute_sql
886. raise original_exception
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelssqlcompiler.py" in execute_sql
876. cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
80. return super(CursorDebugWrapper, self).execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbutils.py" in __exit__
94. six.reraise(dj_exc_type, dj_exc_value, traceback)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangoutilssix.py" in reraise
685. raise value.with_traceback(tb)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagessql_serverpyodbcbase.py" in execute
545. return self.cursor.execute(sql, params)
Exception Type: Error at /djangoProject/results/result_list
Exception Value: ('07002', '[07002] [Microsoft][SQL Server Native Client 11.0]COUNT field incorrect or syntax error (0) (SQLExecDirectW)')
How do I change my view and/or template to batch the ORM query to get around the limit on parameters?
I know the iterator exists, but I believe that queries the database individually for each record, rather than batching queries for every 1,000 or 2,000 records.
I can slice the queryset by adding [:1000] to the end, but I'm not sure how to incorporate that into a loop that unions all of the slices together.
python sql
sql-server django python-3.x asked Nov 20 '18 at 18:15
OverflowingTheGlassOverflowingTheGlass
788523
I have a Django app that runs on SQL Server. SQL Server allows a maximum of 2,100 parameters in a user-defined function. I have a Django view with a queryset that should return 10,000 results when called:
def result_list(request):
results = MyModel.objects.filter(~(Q(importantField='') | Q(importantField='Some Text'))).select_related('field','field2','field3','field4').prefetch_related('anotherField')
return render(request, 'results/result_list.html', {'results':results})
I have a template that attempts to return those 10,000 results
{% for result in results %}
<!-- put results into an HTML table -->
{% endfor %}
Error:
Request Method: GET
Request URL: https://server/results/result_list
Django Version: 1.11.3
Python Version: 3.6.3
Traceback:
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagessql_serverpyodbcbase.py" in execute
545. return self.cursor.execute(sql, params)
The above exception (('07002', '[07002] [Microsoft][SQL Server Native Client 11.0]COUNT field incorrect or syntax error (0) (SQLExecDirectW)')) was the direct cause of the following exception:
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersexception.py" in inner
41. response = get_response(request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersbase.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocorehandlersbase.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangocontribauthdecorators.py" in _wrapped_view
23. return view_func(request, *args, **kwargs)
File "D:Websitesprojectappviews.py" in result_list
476. return render(request, 'results/result_list.html', {'results':results})
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangoshortcuts.py" in render
30. content = loader.render_to_string(template_name, context, request, using=using)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader.py" in render_to_string
68. return template.render(context, request)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebackendsdjango.py" in render
66. return self.template.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
207. return self._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
177. return compiled_parent._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
72. result = block.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplateloader_tags.py" in render
216. return template.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
209. return self._render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotestutils.py" in instrumented_test_render
107. return self.nodelist.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render
990. bit = node.render_annotated(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatebase.py" in render_annotated
957. return self.render(context)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangotemplatedefaulttags.py" in render
173. len_values = len(values)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __len__
232. self._fetch_all()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _fetch_all
1120. self._prefetch_related_objects()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _prefetch_related_objects
675. prefetch_related_objects(self._result_cache, *self._prefetch_related_lookups)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in prefetch_related_objects
1469. obj_list, additional_lookups = prefetch_one_level(obj_list, prefetcher, lookup, level)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in prefetch_one_level
1599. all_related_objects = list(rel_qs)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __iter__
250. self._fetch_all()
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in _fetch_all
1118. self._result_cache = list(self._iterable_class(self))
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelsquery.py" in __iter__
53. results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelssqlcompiler.py" in execute_sql
886. raise original_exception
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbmodelssqlcompiler.py" in execute_sql
876. cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
80. return super(CursorDebugWrapper, self).execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbutils.py" in __exit__
94. six.reraise(dj_exc_type, dj_exc_value, traceback)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangoutilssix.py" in reraise
685. raise value.with_traceback(tb)
File "D:PythonAnaconda3envsdjangolibsite-packagesdjangodbbackendsutils.py" in execute
65. return self.cursor.execute(sql, params)
File "D:PythonAnaconda3envsdjangolibsite-packagessql_serverpyodbcbase.py" in execute
545. return self.cursor.execute(sql, params)
Exception Type: Error at /djangoProject/results/result_list
Exception Value: ('07002', '[07002] [Microsoft][SQL Server Native Client 11.0]COUNT field incorrect or syntax error (0) (SQLExecDirectW)')
How do I change my view and/or template to batch the ORM query to get around the limit on parameters?
I know the iterator exists, but I believe that queries the database individually for each record, rather than batching queries for every 1,000 or 2,000 records.
I can slice the queryset by adding [:1000] to the end, but I'm not sure how to incorporate that into a loop that unions all of the slices together.
python sql
sql-server django python-3.x python sql
sql-server django python-3.x asked Nov 20 '18 at 18:15
OverflowingTheGlassOverflowingTheGlass
788523
asked Nov 20 '18 at 18:15
OverflowingTheGlassOverflowingTheGlass
788523
edited Nov 20 '18 at 18:53
OverflowingTheGlass
asked Nov 20 '18 at 18:15
OverflowingTheGlassOverflowingTheGlass
788523
asked Nov 20 '18 at 18:15
OverflowingTheGlassOverflowingTheGlass
788523
asked Nov 20 '18 at 18:15
OverflowingTheGlassOverflowingTheGlass
788523
788523
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