1.11.0

Released: May 15, 2023

usecase

• [usecase] [commands] Added quiet option to the command line, using the -q/--quiet
  option. This flag will prevent alembic from logging anything
  to stdout.

  References: #1109

• [usecase] [asyncio] Added AbstractOperations.run_async() to the operation module to
  allow running async functions in the upgrade or downgrade migration
  function when running alembic using an async dialect. This function will
  receive as first argument an
  ~sqlalchemy.ext.asyncio.AsyncConnection sharing the transaction
  used in the migration context.

  References: #1231

bug

• [bug] [batch] Added placeholder classes for ~.sqla.Computed and
  ~.sqla.Identity when older 1.x SQLAlchemy versions are in use,
  namely prior to SQLAlchemy 1.3.11 when the ~.sqla.Computed
  construct was introduced. Previously these were set to None, however this
  could cause issues with certain codepaths that were using isinstance()
  such as one within "batch mode".

  References: #1237

• [bug] [batch] Correctly pass previously ignored arguments insert_before and
  insert_after in batch_alter_column

  References: #1221

• [bug] [postgresql] Fix autogenerate issue with PostgreSQL ExcludeConstraint
  that included sqlalchemy functions. The function text was previously
  rendered as a plain string without surrounding with text().

  References: #1230

• [bug] [mysql] [regression] Fixed regression caused by #1166 released in version 1.10.0 which
  caused MySQL unique constraints with multiple columns to not compare
  correctly within autogenerate, due to different sorting rules on unique
  constraints vs. indexes, which in MySQL are shared constructs.

  References: #1240

• [bug] [typing] Updated stub generator script to also add stubs method definitions for the
  Operations class and the BatchOperations class obtained
  from Operations.batch_alter_table(). As part of this change, the
  class hierarchy of Operations and BatchOperations has
  been rearranged on top of a common base class AbstractOperations
  in order to type correctly, as BatchOperations uses different
  method signatures for operations than Operations.

  References: #1093

• [bug] [typing] Repaired the return signatures for Operations that mostly
  return None, and were erroneously referring to Optional[Table]
  in many cases.

• [bug] [autogenerate] Modified the autogenerate implementation for comparing "server default"
  values from user-defined metadata to not apply any quoting to the value
  before comparing it to the server-reported default, except for within
  dialect-specific routines as needed. This change will affect the format of
  the server default as passed to the
  EnvironmentContext.configure.compare_server_default hook, as
  well as for third party dialects that implement a custom
  compare_server_default hook in their alembic impl, to be passed "as is"
  and not including additional quoting. Custom implementations which rely
  on this quoting should adjust their approach based on observed formatting.

  References: #1178

• [bug] [api] [autogenerate] Fixed issue where autogenerate.render_python_code() function did not
  provide a default value for the user_module_prefix variable, leading to
  NoneType errors when autogenerate structures included user-defined
  types. Added new parameter
  autogenerate.render_python_code.user_module_prefix to allow
  this to be set as well as to default to None. Pull request courtesy
  tangkikodo.

  References: #1235

misc

• [change] [py3k] Argument signatures of Alembic operations now enforce keyword-only
  arguments as passed as keyword and not positionally, such as
  Operations.create_table.schema,
  Operations.add_column.type_, etc.

  References: #1130

• [misc] Update code snippets within docstrings to use black code formatting.
  Pull request courtesy of James Addison.

  References: #1220