content: """add model_version_id [bf2120261b5a].
  
  Revision ID: bf2120261b5a
  Revises: 0.64.0
  Create Date: 2024-08-07 11:31:00.661089
  
  """
  
  import sqlalchemy as sa
  import sqlmodel
  from alembic import op
  
  # revision identifiers, used by Alembic.
  revision = "bf2120261b5a"
  down_revision = "0.64.0"
  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("pipeline_run", schema=None) as batch_op:
          batch_op.add_column(
              sa.Column(
                  "model_version_id",
                  sqlmodel.sql.sqltypes.GUID(),
                  nullable=True,
              )
          )
          batch_op.create_foreign_key(
              "fk_pipeline_run_model_version_id_model_version",
              "model_version",
              ["model_version_id"],
              ["id"],
              ondelete="SET NULL",
          )
  
      with op.batch_alter_table("step_run", schema=None) as batch_op:
          batch_op.add_column(
              sa.Column(
                  "model_version_id",
                  sqlmodel.sql.sqltypes.GUID(),
                  nullable=True,
              )
          )
          batch_op.create_foreign_key(
              "fk_step_run_model_version_id_model_version",
              "model_version",
              ["model_version_id"],
              ["id"],
              ondelete="SET NULL",
          )
  
      # ### 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_constraint(
              "fk_step_run_model_version_id_model_version", type_="foreignkey"
          )
          batch_op.drop_column("model_version_id")
  
      with op.batch_alter_table("pipeline_run", schema=None) as batch_op:
          batch_op.drop_constraint(
              "fk_pipeline_run_model_version_id_model_version",
              type_="foreignkey",
          )
          batch_op.drop_column("model_version_id")
  
      # ### end Alembic commands ###
  