text: """multi-res-images
  
  Revision ID: 3acec9065c7f
  Revises: b2bbb6eb724f
  Create Date: 2019-08-23 13:29:46.990355
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = "3acec9065c7f"
  down_revision = "b2bbb6eb724f"
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.add_column(
          "playlists",
          sa.Column("playlist_image_sizes_multihash", sa.String(), nullable=True),
      )
      op.add_column("tracks", sa.Column("cover_art_sizes", sa.String(), nullable=True))
      op.add_column("users", sa.Column("cover_photo_sizes", sa.String(), nullable=True))
      op.add_column(
          "users", sa.Column("profile_picture_sizes", sa.String(), nullable=True)
      )
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_column("users", "profile_picture_sizes")
      op.drop_column("users", "cover_photo_sizes")
      op.drop_column("tracks", "cover_art_sizes")
      op.drop_column("playlists", "playlist_image_sizes_multihash")
      # ### end Alembic commands ###
  