#34553: Can't create CheckConstraint with percent characters in values on
postgresql due to broken quoting
-------------------------------------+-------------------------------------
Reporter: Thomas Kolar | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 4.2
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Simon Charette):
The usage of `quote_value` in `ddl_references.Statement.__str__` is
problematic because the later doubles `%`. I haven't fully investigated
what ought to be done to resolve the issue here but it relates to how most
databases don't support parametrized DDL.
The issue here relates to a8b3f96f6acfa082f99166e0a1cfb4b0fbc0eace /
#30408 as well. Now that we explicitly pass `params=None` I suspect
that'll we'll simply want to remove the `%` doubling that takes place in
`SchemaEditor.quote_value`.
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Ticket URL: <https://code.djangoproject.com/ticket/34553#comment:5>
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