new_contents: """Add geography index
  
  Revision ID: d26b4a2cc2ef
  Revises: a25a6c551233
  Create Date: 2016-03-15 14:28:28.132301
  
  """
  
  # revision identifiers, used by Alembic.
  revision = 'd26b4a2cc2ef'
  down_revision = 'a25a6c551233'
  
  from alembic import op
  import sqlalchemy as sa
  from sqlalchemy.dialects import postgresql
  
  def upgrade():
      op.execute('CREATE INDEX zupc_shape_igx ON "ZUPC" USING GIST (shape)')
      op.execute('CLUSTER "ZUPC" on zupc_shape_igx')
  
  
  def downgrade():
      op.execute('DROP INDEX zupc_shape_igx')
  
subject: Add spatial index