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should change of type + change of server default be heuristically orchestrated for incompatible server default types?

op directives

postgresql

use casenot quite a feature and not quite a bug, something we just didn't think ofnot quite a feature and not quite a bug, something we just didn't think of

Status: Open.

#1652 In sqlalchemy/alembic;

· qsuscs opened on Apr 25, 2025

Add support for preserving field order?

mysql

op directives

use casenot quite a feature and not quite a bug, something we just didn't think ofnot quite a feature and not quite a bug, something we just didn't think of

Status: Open.

#1539 In sqlalchemy/alembic;

· msaysell opened on Sep 20, 2024

Naming conventions in metadata sequences are ignored

autogenerate - rendering

bugSomething isn't workingSomething isn't working

op directives

Status: Open.

#1396 In sqlalchemy/alembic;

· iurisilvio opened on Jan 11, 2024

private constructor elements on CreateTableOp make it impossible to copy w/ public API

bugSomething isn't workingSomething isn't working

op directives

Status: Open.

#1193 In sqlalchemy/alembic;

· zzzeek opened on Mar 6, 2023

Add support for temporal table migrations (<code>WITH SYSTEM VERSIONING</code>)

op directives

use casenot quite a feature and not quite a bug, something we just didn't think ofnot quite a feature and not quite a bug, something we just didn't think of

Status: Open.

#956 In sqlalchemy/alembic;

· tgross35 opened on Oct 21, 2021

CHECK constraints not dropped if one migrates from Boolean or Enum to another type

autogenerate for enumsa long term subject, tagging issues related to thisa long term subject, tagging issues related to this

bugSomething isn't workingSomething isn't working

op directives

Status: Open.

#652 In sqlalchemy/alembic;

· zzzeek opened on Feb 4, 2020

drop_constraint etc. should check for name=None and emit informative error message since this is common w/ autogenerate

missing behaviornot quite a feature and not quite a bug, somehting we need to supportnot quite a feature and not quite a bug, somehting we need to support

naming convention issues

op directives

Status: Open.

#588 In sqlalchemy/alembic;

· torston opened on Jul 19, 2019

evaulate support of schema_translate_map feature of SQLAlchemy with alembic migrations

missing behaviornot quite a feature and not quite a bug, somehting we need to supportnot quite a feature and not quite a bug, somehting we need to support

multitenancy

op directives

Status: Open.

#555 In sqlalchemy/alembic;

· anetbnd opened on Apr 30, 2019

SQLAlchemy 1.3 long name truncation

autogenerate - rendering

bugSomething isn't workingSomething isn't working

external SQLAlchemy issuesthe issue is in SQLAlchemy, not here in alembicthe issue is in SQLAlchemy, not here in alembic

naming convention issues

op directives

Status: Open.

#542 In sqlalchemy/alembic;

· RazerM opened on Mar 5, 2019

IF (NOT) EXISTS for ALTER TABLE sub-commands like constraints etc

external SQLAlchemy issuesthe issue is in SQLAlchemy, not here in alembicthe issue is in SQLAlchemy, not here in alembic

feature

op directives

Status: Open.

#524 In sqlalchemy/alembic;

· EMCain opened on Jan 9, 2019

Support for MySQL/MariaDB online migrations (support custom keyword arguments for operations)

feature

op directives

Tier 1High priority issues / Desired features that should be prioritised in release planningHigh priority issues / Desired features that should be prioritised in release planning

Status: Open.

#423 In sqlalchemy/alembic;

· sqlalchemy-bot opened on Mar 23, 2017

generalized "recreate foreign key" / "recreate constraint" / "drop constraint if needed" types of directives + autogenerate?

feature

op directives

Tier 1High priority issues / Desired features that should be prioritised in release planningHigh priority issues / Desired features that should be prioritised in release planning

Status: Open.

#232 In sqlalchemy/alembic;

· sqlalchemy-bot opened on Oct 13, 2014