content: """Step exception info [d4591f95ac07].
  
  Revision ID: d4591f95ac07
  Revises: 0.84.0
  Create Date: 2025-07-17 14:13:54.731842
  
  """
  
  import sqlalchemy as sa
  from alembic import op
  from sqlalchemy.dialects import mysql
  
  # revision identifiers, used by Alembic.
  revision = "d4591f95ac07"
  down_revision = "0.84.0"
  branch_labels = None
  depends_on = None
  
  
  def upgrade() -> None:
      """Upgrade database schema and/or data, creating a new revision."""
      # ### commands auto generated by Alembic - please adjust! ###
      with op.batch_alter_table("step_run", schema=None) as batch_op:
          batch_op.add_column(
              sa.Column(
                  "exception_info",
                  sa.String(length=16777215).with_variant(
                      mysql.MEDIUMTEXT, "mysql"
                  ),
                  nullable=True,
              )
          )
  
      # ### end Alembic commands ###
  
  
  def downgrade() -> None:
      """Downgrade database schema and/or data back to the previous revision."""
      # ### commands auto generated by Alembic - please adjust! ###
      with op.batch_alter_table("step_run", schema=None) as batch_op:
          batch_op.drop_column("exception_info")
  
      # ### end Alembic commands ###
  