sqlalchemy-bot

**Migrated issue, originally created by Michael Bayer ([@zzzeek](https://github.com/zzzeek))** this is probably what was seen in #273 but wasn't well-described. if an application uses Table on the model side to refer...

document this workaround for custom SchemaType + per-type CheckConstraint

6

**Migrated issue, originally created by Adrian ([@thiefmaster](https://github.com/thiefmaster))** I'm using this custom type in SQLAlchemy: ``` class PyIntEnum(TypeDecorator, SchemaType): """Custom type which handles values from a PEP-435 Enum. In addition to...

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

15

**Migrated issue, originally created by Stéphane Klein ([@harobed](https://github.com/harobed))** With MSSql, drop_column have some specific options https://github.com/zzzeek/alembic/blob/master/alembic/operations.py#L504 like : "mssql_drop_foreign_key". I suggest to append specifics options for Mysql : * "mysql_drop_contraints"...

checkfirst feature ?

5

**Migrated issue, originally created by Michael Bayer ([@zzzeek](https://github.com/zzzeek))** For making migrations "idempotent" for those working in online mode, and to expand upon #151, allow operations to run a "checkfirst" by...

**Migrated issue, originally created by Michael Bayer ([@zzzeek](https://github.com/zzzeek))** right now the only way to get at the Table etc. created by op directives is to use events, and that means...

pluggable impls

4

**Migrated issue, originally created by Michael Bayer ([@zzzeek](https://github.com/zzzeek))** to support any number of dialects, the system by which we load "impls" should use the PluginLoader system from SQLAlchemy, and support...

produce "raise on execute" symbols that we can put in places we know that "None" will fail, like UniqueConstraint(None), etc.

10

**Migrated issue, originally created by Ulrich Petri ([@ulope](https://github.com/ulope))** When adding `unique=True` to an existing column the generated migration looks like this: ``` python def upgrade(): op.create_unique_constraint(None, 'table', ['field']) def downgrade():...

do not rely on reflection applying naming conventions

1

**Migrated issue, originally created by Michael Bayer ([@zzzeek](https://github.com/zzzeek))** the naming convention feature added in 735889f068c58f8a278dcfe5bda7496624339026 will require adjustment per SQLAlchemy issue https://bitbucket.org/zzzeek/sqlalchemy/issues/3818/naming-convention-should-not-fire-off-on. Reflection should not be applying naming constraints and...

**Migrated issue, originally created by Michael Bayer ([@zzzeek](https://github.com/zzzeek))** e.g. to http://alembic.readthedocs.org/en/latest/autogenerate.html including: 1. using Tables for views 2. working around constraint names that are truncated add a link from the...

add this recipe for large bulk_inserts to the bulk_insert docs

6

**Migrated issue, originally created by Florian Rüchel ([@javex](https://github.com/javex))** I recently had a problem where MySQL would not like to bulk_insert 80k rows at once. Instead I had to feed it...