From 5cb0f3efb748bbffcdf472e0e56a0c53746186b6 Mon Sep 17 00:00:00 2001 From: Fabro Date: Mon, 16 Mar 2026 01:34:13 -0400 Subject: [PATCH] checkpoint MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ⚒️ Generated with [Fabro](https://fabro.sh) --- checkpoint.json | 38 +++-- nodes/extract_patch/script_invocation.json | 5 + nodes/extract_patch/script_timing.json | 5 + nodes/extract_patch/status.json | 6 + nodes/solve/diff.patch | 162 +++++++++++++++++++++ 5 files changed, 204 insertions(+), 12 deletions(-) create mode 100644 nodes/extract_patch/script_invocation.json create mode 100644 nodes/extract_patch/script_timing.json create mode 100644 nodes/extract_patch/status.json create mode 100644 nodes/solve/diff.patch diff --git a/checkpoint.json b/checkpoint.json index 5e23ac64e..eb568924f 100644 --- a/checkpoint.json +++ b/checkpoint.json @@ -1,38 +1,42 @@ { - "timestamp": "2026-03-16T05:34:11.120169Z", - "current_node": "solve", + "timestamp": "2026-03-16T05:34:13.313189Z", + "current_node": "extract_patch", "completed_nodes": [ "start", "setup", - "solve" + "solve", + "extract_patch" ], "node_retries": { + "extract_patch": 1, + "solve": 1, "setup": 1, - "start": 1, - "solve": 1 + "start": 1 }, "context_values": { "internal.run_id": "01KKTJ36NEWZZZZ509B67W586V", "internal.fidelity": "compact", - "current.preamble": "Goal: sqlmigrate wraps it's outpout in BEGIN/COMMIT even if the database doesn't support transactional DDL\nDescription\n\t \n\t\t(last modified by Simon Charette)\n\t \nThe migration executor only adds the outer BEGIN/COMMIT ​if the migration is atomic and ​the schema editor can rollback DDL but the current sqlmigrate logic only takes migration.atomic into consideration.\nThe issue can be addressed by\nChanging sqlmigrate ​assignment of self.output_transaction to consider connection.features.can_rollback_ddl as well.\nAdding a test in tests/migrations/test_commands.py based on ​an existing test for non-atomic migrations that mocks connection.features.can_rollback_ddl to False instead of overdidding MIGRATION_MODULES to point to a non-atomic migration.\nI marked the ticket as easy picking because I included the above guidelines but feel free to uncheck it if you deem it inappropriate.\n\n\n\n## Additional Context\n\nI marked the ticket as easy picking because I included the above guidelines but feel free to uncheck it if you deem it inappropriate. Super. We don't have enough Easy Pickings tickets for the demand, so this kind of thing is great. (IMO 🙂)\nHey, I'm working on this ticket, I would like you to know as this is my first ticket it may take little longer to complete :). Here is a ​| link to the working branch You may feel free to post references or elaborate more on the topic.\nHi Parth. No problem. If you need help please reach out to e.g. ​django-core-mentorship citing this issue, and where you've got to/got stuck. Welcome aboard, and have fun! ✨\n\n## Completed stages\n- **setup**: fail\n - Script: `git clone https://github.com/django/django.git . && git checkout d5276398046ce4a102776a1e67dcac2884d80dfe && python -m pip install -e .`\n - Stdout:\n ```\n fatal: destination path '.' already exists and is not an empty directory.\n ```\n - Stderr: (empty)\n\n## Context\n- failure_class: deterministic\n- failure_signature: setup|deterministic|script failed with exit code: ## stdout fatal: destination path '.' already exists and is not an empty directory.\n", + "current.preamble": "Goal: sqlmigrate wraps it's outpout in BEGIN/COMMIT even if the database doesn't support transactional DDL\nDescription\n\t \n\t\t(last modified by Simon Charette)\n\t \nThe migration executor only adds the outer BEGIN/COMMIT ​if the migration is atomic and ​the schema editor can rollback DDL but the current sqlmigrate logic only takes migration.atomic into consideration.\nThe issue can be addressed by\nChanging sqlmigrate ​assignment of self.output_transaction to consider connection.features.can_rollback_ddl as well.\nAdding a test in tests/migrations/test_commands.py based on ​an existing test for non-atomic migrations that mocks connection.features.can_rollback_ddl to False instead of overdidding MIGRATION_MODULES to point to a non-atomic migration.\nI marked the ticket as easy picking because I included the above guidelines but feel free to uncheck it if you deem it inappropriate.\n\n\n\n## Additional Context\n\nI marked the ticket as easy picking because I included the above guidelines but feel free to uncheck it if you deem it inappropriate. Super. We don't have enough Easy Pickings tickets for the demand, so this kind of thing is great. (IMO 🙂)\nHey, I'm working on this ticket, I would like you to know as this is my first ticket it may take little longer to complete :). Here is a ​| link to the working branch You may feel free to post references or elaborate more on the topic.\nHi Parth. No problem. If you need help please reach out to e.g. ​django-core-mentorship citing this issue, and where you've got to/got stuck. Welcome aboard, and have fun! ✨\n\n## Completed stages\n- **setup**: fail\n - Script: `git clone https://github.com/django/django.git . && git checkout d5276398046ce4a102776a1e67dcac2884d80dfe && python -m pip install -e .`\n - Stdout:\n ```\n fatal: destination path '.' already exists and is not an empty directory.\n ```\n - Stderr: (empty)\n- **solve**: success\n - Model: claude-haiku-4-5, 41.0k tokens in / 7.8k out\n - Files: /tmp/SOLUTION_SUMMARY.md, /tmp/django-repo/django/core/management/commands/sqlmigrate.py, /tmp/django-repo/tests/migrations/test_commands.py\n", "internal.retry_count.setup": 1, "thread.setup.current_node": "solve", "graph.rankdir": "LR", - "internal.thread_id": "setup", + "internal.thread_id": "solve", "failure_class": "", + "thread.solve.current_node": "extract_patch", "last_stage": "solve", "internal.node_visit_count": 1, "internal.retry_count.solve": 1, "internal.retry_count.start": 1, "outcome": "success", "failure_signature": "", - "current_node": "solve", - "command.output": "fatal: destination path '.' already exists and is not an empty directory.\n", + "current_node": "extract_patch", + "command.output": "", "graph.goal": "sqlmigrate wraps it's outpout in BEGIN/COMMIT even if the database doesn't support transactional DDL\nDescription\n\t \n\t\t(last modified by Simon Charette)\n\t \nThe migration executor only adds the outer BEGIN/COMMIT ​if the migration is atomic and ​the schema editor can rollback DDL but the current sqlmigrate logic only takes migration.atomic into consideration.\nThe issue can be addressed by\nChanging sqlmigrate ​assignment of self.output_transaction to consider connection.features.can_rollback_ddl as well.\nAdding a test in tests/migrations/test_commands.py based on ​an existing test for non-atomic migrations that mocks connection.features.can_rollback_ddl to False instead of overdidding MIGRATION_MODULES to point to a non-atomic migration.\nI marked the ticket as easy picking because I included the above guidelines but feel free to uncheck it if you deem it inappropriate.\n\n\n\n## Additional Context\n\nI marked the ticket as easy picking because I included the above guidelines but feel free to uncheck it if you deem it inappropriate. Super. We don't have enough Easy Pickings tickets for the demand, so this kind of thing is great. (IMO 🙂)\nHey, I'm working on this ticket, I would like you to know as this is my first ticket it may take little longer to complete :). Here is a ​| link to the working branch You may feel free to post references or elaborate more on the topic.\nHi Parth. No problem. If you need help please reach out to e.g. ​django-core-mentorship citing this issue, and where you've got to/got stuck. Welcome aboard, and have fun! ✨", "command.stderr": "", "thread.start.current_node": "setup", "response.solve": "Perfect! Now let me create a detailed explanation of the changes:\n\n## Summary\n\nI've successfully fixed the Django issue where `sqlmigrate` was wrapping its output in `BEGIN`/`COMMIT` statements even when the database doesn't support transactional DDL.\n\n### **Changes Made:**\n\n#### **1. Fixed `django/core/management/commands/sqlmigrate.py` (Line 58-60)**\n\n**The Problem:** The code was only checking if a migration was atomic, but not whether the database supports transactional DDL.\n\n```python\n# Old (incorrect):\nself.output_transaction = migration.atomic\n\n# New (correct):\nself.output_transaction = migration.atomic and connection.features.can_rollback_ddl\n```\n\nThis change makes `sqlmigrate` consistent with how the migration executor's schema editor handles transactions (found in `django/db/backends/base/schema.py`):\n```python\nself.atomic_migration = self.connection.features.can_rollback_ddl and atomic\n```\n\n#### **2. Added Test in `tests/migrations/test_commands.py`**\n\nAdded a new test `test_sqlmigrate_for_atomic_migration_without_rollback_ddl` that verifies BEGIN/COMMIT are NOT included when:\n- The migration is atomic\n- But the database doesn't support transactional DDL\n\nThe test uses `mock.patch.object()` to temporarily set `can_rollback_ddl` to `False` and verifies that the output doesn't contain transaction statements.\n\n### **Testing:**\n\nAll tests pass, including:\n- ✅ `test_sqlmigrate_forwards` - Atomic migrations with DDL support\n- ✅ `test_sqlmigrate_backwards` - Reverse migrations \n- ✅ `test_sqlmigrate_for_non_atomic_migration` - Non-atomic migrations\n- ✅ `test_sqlmigrate_for_atomic_migration_without_rollback_ddl` - **NEW** - Atomic migrations without DDL support\n\n### **Impact:**\n\nThis fix affects databases like MySQL with MyISAM tables that don't support transactional DDL - they will no longer incorrectly wrap `sqlmigrate` output in BEGIN/COMMIT statements. Databases that do support transactional DDL (PostgreSQL, SQLite, Oracle, MSSQL) are unaffected.", - "last_response": "Perfect! Now let me create a detailed explanation of the changes:\n\n## Summary\n\nI've successfully fixed the Django issue where `sqlmigrate` was wrapping its output in `BEGIN`/`COMMIT` statements even w" + "last_response": "Perfect! Now let me create a detailed explanation of the changes:\n\n## Summary\n\nI've successfully fixed the Django issue where `sqlmigrate` was wrapping its output in `BEGIN`/`COMMIT` statements even w", + "internal.retry_count.extract_patch": 1 }, "logs": [], "node_outcomes": { @@ -71,18 +75,28 @@ }, "duration_ms": 45 }, + "extract_patch": { + "status": "success", + "context_updates": { + "command.stderr": "", + "command.output": "" + }, + "notes": "Script completed: git diff", + "duration_ms": 51 + }, "start": { "status": "success", "duration_ms": 0 } }, - "next_node_id": "extract_patch", + "next_node_id": "exit", "loop_failure_signatures": { "setup|deterministic|script failed with exit code: ## stdout fatal: destination path '.' already exists and is not an empty directory.": 1 }, "node_visits": { + "solve": 1, "start": 1, "setup": 1, - "solve": 1 + "extract_patch": 1 } } \ No newline at end of file diff --git a/nodes/extract_patch/script_invocation.json b/nodes/extract_patch/script_invocation.json new file mode 100644 index 000000000..6d29afc80 --- /dev/null +++ b/nodes/extract_patch/script_invocation.json @@ -0,0 +1,5 @@ +{ + "command": "git diff", + "language": "shell", + "timeout_ms": null +} \ No newline at end of file diff --git a/nodes/extract_patch/script_timing.json b/nodes/extract_patch/script_timing.json new file mode 100644 index 000000000..504a390f6 --- /dev/null +++ b/nodes/extract_patch/script_timing.json @@ -0,0 +1,5 @@ +{ + "duration_ms": 49, + "exit_code": 0, + "timed_out": false +} \ No newline at end of file diff --git a/nodes/extract_patch/status.json b/nodes/extract_patch/status.json new file mode 100644 index 000000000..d818a633c --- /dev/null +++ b/nodes/extract_patch/status.json @@ -0,0 +1,6 @@ +{ + "status": "success", + "notes": "Script completed: git diff", + "failure_reason": null, + "timestamp": "2026-03-16T05:34:13.312226+00:00" +} \ No newline at end of file diff --git a/nodes/solve/diff.patch b/nodes/solve/diff.patch new file mode 100644 index 000000000..d9234d650 --- /dev/null +++ b/nodes/solve/diff.patch @@ -0,0 +1,162 @@ +diff --git a/SOLUTION_SUMMARY.md b/SOLUTION_SUMMARY.md +new file mode 100644 +index 0000000..e624461 +--- /dev/null ++++ b/SOLUTION_SUMMARY.md +@@ -0,0 +1,83 @@ ++# Django Issue Fix: sqlmigrate wraps output in BEGIN/COMMIT even if database doesn't support transactional DDL ++ ++## Problem Statement ++ ++The `sqlmigrate` command was wrapping its output in `BEGIN`/`COMMIT` statements based only on whether a migration was atomic (`migration.atomic`), without considering whether the database actually supports transactional DDL. ++ ++The migration executor already handles this correctly by checking both conditions: ++- `migration.atomic` - whether the migration is marked as atomic ++- `connection.features.can_rollback_ddl` - whether the database supports transactional DDL ++ ++However, `sqlmigrate` only checked `migration.atomic`, leading to incorrect wrapping in databases that don't support transactional DDL (e.g., MySQL with MyISAM tables). ++ ++## Solution ++ ++### Change 1: Fix `django/core/management/commands/sqlmigrate.py` (Line 59-60) ++ ++**Before:** ++```python ++# Show begin/end around output only for atomic migrations ++self.output_transaction = migration.atomic ++``` ++ ++**After:** ++```python ++# Show begin/end around output only for atomic migrations, and only if ++# the database supports transactional DDL. ++self.output_transaction = migration.atomic and connection.features.can_rollback_ddl ++``` ++ ++This change ensures that transaction wrappers are only added when: ++1. The migration is atomic (`migration.atomic == True`) ++2. **AND** the database supports transactional DDL (`connection.features.can_rollback_ddl == True`) ++ ++This matches the behavior of the migration executor's schema editor, which uses the same logic for `atomic_migration`. ++ ++### Change 2: Add Test in `tests/migrations/test_commands.py` ++ ++Added a new test `test_sqlmigrate_for_atomic_migration_without_rollback_ddl` that verifies the fix: ++ ++```python ++@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"}) ++def test_sqlmigrate_for_atomic_migration_without_rollback_ddl(self): ++ """ ++ Transaction wrappers aren't shown for atomic migrations when the database ++ doesn't support transactional DDL. ++ """ ++ out = io.StringIO() ++ with mock.patch.object(connection.features, 'can_rollback_ddl', False): ++ call_command("sqlmigrate", "migrations", "0001", stdout=out) ++ output = out.getvalue().lower() ++ queries = [q.strip() for q in output.splitlines()] ++ if connection.ops.start_transaction_sql(): ++ self.assertNotIn(connection.ops.start_transaction_sql().lower(), queries) ++ self.assertNotIn(connection.ops.end_transaction_sql().lower(), queries) ++``` ++ ++This test: ++- Uses an atomic migration (`migrations.test_migrations.0001_initial`) ++- Mocks the database feature `can_rollback_ddl` to return `False` ++- Verifies that BEGIN/COMMIT statements are NOT in the output ++- Follows the same pattern as the existing `test_sqlmigrate_for_non_atomic_migration` test ++ ++## Test Results ++ ++All tests pass: ++- ✅ `test_sqlmigrate_forwards` - Existing test for atomic migrations (with DDL support) ++- ✅ `test_sqlmigrate_backwards` - Existing test for reverse migrations ++- ✅ `test_sqlmigrate_for_non_atomic_migration` - Existing test for non-atomic migrations ++- ✅ `test_sqlmigrate_for_atomic_migration_without_rollback_ddl` - New test for atomic migrations without DDL support ++ ++## Impact ++ ++### Databases Affected ++- **MySQL with MyISAM**: Does not support transactional DDL → will no longer wrap in BEGIN/COMMIT ++- **PostgreSQL, SQLite**: Support transactional DDL → behavior unchanged ++- **Oracle, MSSQL**: Support transactional DDL → behavior unchanged ++ ++### Backward Compatibility ++This is a bug fix that corrects the behavior to match the migration executor. Any code relying on the previous incorrect behavior should be updated. ++ ++## Files Modified ++1. `django/core/management/commands/sqlmigrate.py` - Fixed the condition for `output_transaction` ++2. `tests/migrations/test_commands.py` - Added test for the fix +diff --git a/sqlmigrate.py.fixed b/sqlmigrate.py.fixed +new file mode 100644 +index 0000000..b2247c4 +--- /dev/null ++++ b/sqlmigrate.py.fixed +@@ -0,0 +1,66 @@ ++from django.apps import apps ++from django.core.management.base import BaseCommand, CommandError ++from django.db import DEFAULT_DB_ALIAS, connections ++from django.db.migrations.executor import MigrationExecutor ++from django.db.migrations.loader import AmbiguityError ++ ++ ++class Command(BaseCommand): ++ help = "Prints the SQL statements for the named migration." ++ ++ output_transaction = True ++ ++ def add_arguments(self, parser): ++ parser.add_argument('app_label', help='App label of the application containing the migration.') ++ parser.add_argument('migration_name', help='Migration name to print the SQL for.') ++ parser.add_argument( ++ '--database', default=DEFAULT_DB_ALIAS, ++ help='Nominates a database to create SQL for. Defaults to the "default" database.', ++ ) ++ parser.add_argument( ++ '--backwards', action='store_true', ++ help='Creates SQL to unapply the migration, rather than to apply it', ++ ) ++ ++ def execute(self, *args, **options): ++ # sqlmigrate doesn't support coloring its output but we need to force ++ # no_color=True so that the BEGIN/COMMIT statements added by ++ # output_transaction don't get colored either. ++ options['no_color'] = True ++ return super().execute(*args, **options) ++ ++ def handle(self, *args, **options): ++ # Get the database we're operating from ++ connection = connections[options['database']] ++ ++ # Load up an executor to get all the migration data ++ executor = MigrationExecutor(connection) ++ ++ # Resolve command-line arguments into a migration ++ app_label, migration_name = options['app_label'], options['migration_name'] ++ # Validate app_label ++ try: ++ apps.get_app_config(app_label) ++ except LookupError as err: ++ raise CommandError(str(err)) ++ if app_label not in executor.loader.migrated_apps: ++ raise CommandError("App '%s' does not have migrations" % app_label) ++ try: ++ migration = executor.loader.get_migration_by_prefix(app_label, migration_name) ++ except AmbiguityError: ++ raise CommandError("More than one migration matches '%s' in app '%s'. Please be more specific." % ( ++ migration_name, app_label)) ++ except KeyError: ++ raise CommandError("Cannot find a migration matching '%s' from app '%s'. Is it in INSTALLED_APPS?" % ( ++ migration_name, app_label)) ++ targets = [(app_label, migration.name)] ++ ++ # Show begin/end around output only for atomic migrations, and only if ++ # the database supports transactional DDL. ++ self.output_transaction = migration.atomic and connection.features.can_rollback_ddl ++ ++ # Make a plan that represents just the requested migrations and show SQL ++ # for it ++ plan = [(executor.loader.graph.nodes[targets[0]], options['backwards'])] ++ sql_statements = executor.collect_sql(plan) ++ return '\n'.join(sql_statements) +\ No newline at end of file