1.18.4

Released: February 10, 2026

bug

• [bug] [operations] Reverted the behavior of Operations.add_column() that would
  automatically render the "PRIMARY KEY" keyword inline when a
  Column with primary_key=True is added. The automatic
  behavior, added in version 1.18.2, is now opt-in via the new
  Operations.add_column.inline_primary_key parameter. This
  change restores the ability to render a PostgreSQL SERIAL column, which is
  required to be primary_key=True, while not impacting the ability to
  render a separate primary key constraint. This also provides consistency
  with the Operations.add_column.inline_references parameter and
  gives users explicit control over SQL generation.

  To render PRIMARY KEY inline, use the
  Operations.add_column.inline_primary_key parameter set to
  True:

  op.add_column(
  "my_table",
  Column("id", Integer, primary_key=True),
  inline_primary_key=True
  )References: #1232