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102 lines
6.2 KiB
Plaintext
102 lines
6.2 KiB
Plaintext
📝 Conversation Summary:
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==================================================
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👤 User: The codebase is at /data2/zhangchen_workspace/claude-context/evaluation/repos/repo__django__django.
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Issue:
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<issue>
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Query optimization in YearLookup breaks filtering by "__iso_year"
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Description
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(last modified by Florian Demmer)
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The optimization to use BETWEEN instead of the EXTRACT operation in YearLookup is also registered for the "__iso_year" lookup, which breaks the functionality provided by ExtractIsoYear when used via the lookup.
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This has unfortunately been broken ever since ExtractIsoYear was introduced in Django 2.2 via #28649 and wasn't easy to track down since ExtractIsoYear when used by itself eg. in an annotation works perfectly fine. Just when using the lookup in a filter, the optimization is used (even when explicitly using an annotation):
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# annotation works
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>>> qs = DTModel.objects.annotate(extracted=ExtractIsoYear('start_date')).only('id')
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>>> print(qs.query)
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SELECT "db_functions_dtmodel"."id", EXTRACT('isoyear' FROM "db_functions_dtmodel"."start_date") AS "extracted" FROM "db_functions_dtmodel"
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# explicit annotation used in filter does not use "extracted" and adds BETWEEN
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>>> print(qs.filter(extracted=2020).query)
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SELECT "db_functions_dtmodel"."id", EXTRACT('isoyear' FROM "db_functions_dtmodel"."start_date") AS "extracted" FROM "db_functions_dtmodel" WHERE "db_functions_dtmodel"."start_date" BETWEEN 2020-01-01 AND 2020-12-31
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# implicit lookup uses BETWEEN
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>>> print(DTModel.objects.filter(start_date__iso_year=2020).only('id').query)
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SELECT "db_functions_dtmodel"."id" FROM "db_functions_dtmodel" WHERE "db_functions_dtmodel"."start_date" BETWEEN 2020-01-01 AND 2020-12-31
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This results in the wrong data being returned by filters using iso_year.
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This PR fixes the behaviour, reverts the invalid changes to the tests and extends one test to catch this problem: https://github.com/django/django/pull/14157
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</issue>
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Your task is to identify and edit the files that need to be modified to resolve the issue.
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Focus on making the necessary changes to completely address the problem.
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Use the available tools step by step to accomplish this goal. The primary objective is to edit the existing code files. No validation or testing is required.
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==================================================
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🤖 LLM:
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==================================================
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🔧 Tool Call: 'search_code'
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ID: call_koXBMzfQDy99VVUFTHcr1PYr
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Arguments: {'path': '/data2/zhangchen_workspace/claude-context/evaluation/repos/repo__django__django', 'query': 'YearLookup', 'limit': 10}
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==================================================
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⚙️ Tool Response: 'search_code'
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Call ID: call_koXBMzfQDy99VVUFTHcr1PYr
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Result: Found 10 results for query: "YearLookup" in codebase '/data2/zhangchen_workspace/claude-context/evaluation/repos/repo__django__django'
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1. Code snippet (python) [repo__django__django]
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Location: django/db/models/lookups.py:568-577
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Rank: 1
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Context:
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```python
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def get_bound_params(self, start, finish):
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raise NotImplementedError(
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'subclasses of YearLookup must provide a get_bound_params() method'
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)
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class YearExact(YearLookup, Exact):
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def get_direct_rhs_sql(self, connection, rhs):
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return 'BETWEEN %s AND %s'
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def get_bound_params(self, start, finish):
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return (start, finish)
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```
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2. Code snippet (python) [repo__django__django]
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Location: django/db/models/lookups.py:538-569
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Rank: 2
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Context:
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```python
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class IRegex(Regex):
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lookup_name = 'iregex'
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class YearLookup(Lookup):
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def year_lookup_bounds(self, connection, year):
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output_field = self.lhs.lhs.output_field
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if isinstance(output_field, DateTimeField):
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... 147 more lines
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==================================================
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🤖 LLM:
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==================================================
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🔧 Tool Call: 'edit'
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ID: call_nMGMuZZ1I5M4cBw4QOhsZAMS
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Arguments: {'file_path': '/data2/zhangchen_workspace/claude-context/evaluation/repos/repo__django__django/django/db/models/lookups.py', 'old_string': 'def get_direct_rhs_sql(self, connection, rhs):\n return connection.operators[self.lookup_name] % rhs', 'new_string': "def get_direct_rhs_sql(self, connection, rhs):\n if self.lookup_name == '__iso_year':\n # add specific logic for __iso_year to ensure proper filtering\n return 'EXTRACT(ISOYEAR FROM %s)' % rhs\n return connection.operators[self.lookup_name] % rhs"}
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==================================================
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🔧 Tool Call: 'edit'
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ID: call_AdxEZLmU60CCo1UVm9OTrgOo
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Arguments: {'file_path': '/data2/zhangchen_workspace/claude-context/evaluation/repos/repo__django__django/django/db/models/lookups.py', 'old_string': 'def year_lookup_bounds(self, connection, year):', 'new_string': "def year_lookup_bounds(self, connection, year):\n # Ensure correct bounds for __iso_year\n if self.lookup_name == '__iso_year':\n return (year - 1, year) # adjust for ISO year perspective"}
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==================================================
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⚙️ Tool Response: 'edit'
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Call ID: call_nMGMuZZ1I5M4cBw4QOhsZAMS
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Result: Successfully modified file: /data2/zhangchen_workspace/claude-context/evaluation/repos/repo__django__django/django/db/models/lookups.py
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==================================================
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⚙️ Tool Response: 'edit'
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Call ID: call_AdxEZLmU60CCo1UVm9OTrgOo
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Result: Successfully modified file: /data2/zhangchen_workspace/claude-context/evaluation/repos/repo__django__django/django/db/models/lookups.py
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==================================================
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🤖 LLM: The necessary modifications have been made to resolve the issue with the `YearLookup` and its handling of the `__iso_year` filter.
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### Changes Made:
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1. **In the `get_direct_rhs_sql` method of `YearLookup`:**
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- Added specific logic for handling the `__iso_year` lookup to ensure proper filtering.
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2. **In the `year_lookup_bounds` method of `YearLookup`:**
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- Adjusted the method to return the correct bounds for the `__iso_year` to align with ISO year perspective.
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These changes should help restore the expected behavior when using the `__iso_year` lookup in filters. If you require further modifications or additional actions, please let me know!
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