content: """Add run_once_start_time to Schedule [1d74e596abb8].
  
  Revision ID: 1d74e596abb8
  Revises: 0.56.2
  Create Date: 2024-04-02 11:35:28.755331
  
  """
  
  import sqlalchemy as sa
  from alembic import op
  
  # revision identifiers, used by Alembic.
  revision = "1d74e596abb8"
  down_revision = "0.56.2"
  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("schedule", schema=None) as batch_op:
          batch_op.add_column(
              sa.Column("run_once_start_time", sa.DateTime(), 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("schedule", schema=None) as batch_op:
          batch_op.drop_column("run_once_start_time")
  
      # ### end Alembic commands ###
  