content: """Pipeline Versioning [e65aa6708ff7].
  
  Revision ID: e65aa6708ff7
  Revises: bea8a6ce3015
  Create Date: 2023-01-27 10:33:30.974448
  
  """
  
  import sqlalchemy as sa
  import sqlmodel
  from alembic import op
  
  # revision identifiers, used by Alembic.
  revision = "e65aa6708ff7"
  down_revision = "bea8a6ce3015"
  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", schema=None) as batch_op:
          batch_op.add_column(
              sa.Column(
                  "version", sqlmodel.sql.sqltypes.AutoString(), nullable=True
              )
          )
          batch_op.add_column(
              sa.Column(
                  "version_hash",
                  sqlmodel.sql.sqltypes.AutoString(),
                  nullable=True,
              )
          )
      op.execute("UPDATE pipeline SET version = 'UNVERSIONED'")
      op.execute("UPDATE pipeline SET version_hash = 'UNVERSIONED'")
      with op.batch_alter_table("pipeline", schema=None) as batch_op:
          batch_op.alter_column(
              "version",
              nullable=False,
              existing_type=sqlmodel.sql.sqltypes.AutoString(),
          )
          batch_op.alter_column(
              "version_hash",
              nullable=False,
              existing_type=sqlmodel.sql.sqltypes.AutoString(),
          )
  
      # ### 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("pipeline", schema=None) as batch_op:
          batch_op.drop_column("version_hash")
          batch_op.drop_column("version")
  
      # ### end Alembic commands ###
  