#32770: GinIndex with OpClass and Cast results in Postgres syntax error in
migration
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Reporter: syastrov | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 3.2
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 1
UI/UX: 0 |
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Given the following model + index:
{{{
from django.db import models
from django.contrib.postgres.indexes import GinIndex, OpClass
from django.db.models.functions import Cast
class MyModel(models.Model):
class Meta:
indexes = [
GinIndex(OpClass(Cast("id", output_field=models.TextField()),
name='gin_trgm_ops'), name='foobar')
]
}}}
After running makemigrations and running the migration, it produces the
SQL:
{{{
CREATE INDEX "foobar" ON "myapp_mymodel" USING gin ((CAST("id" AS text)
gin_trgm_ops));
}}}
Which is a syntax error on Postgres (version 12). The reason is the extra
parentheses around CAST.
--
Ticket URL: <https://code.djangoproject.com/ticket/32770>
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