* Closes #18191: Remove redundant SQL indexes * Update developer documentation * Add a system check for duplicate indexes
This commit is contained in:
@@ -6,7 +6,7 @@ Below is a list of tasks to consider when adding a new field to a core model.
|
||||
|
||||
Add the field to the model, taking care to address any of the following conditions.
|
||||
|
||||
* When adding a GenericForeignKey field, also add an index under `Meta` for its two concrete fields. For example:
|
||||
* When adding a GenericForeignKey field, you may need add an index under `Meta` for its two concrete fields. (This is required only for non-unique GFK relationships, as the unique constraint introduces its own index.) For example:
|
||||
|
||||
```python
|
||||
class Meta:
|
||||
|
Reference in New Issue
Block a user