text: """Create table called groups that contains the categories for the pitches
  
  Revision ID: af627d57e9ff
  Revises: 6562b467886d
  Create Date: 2017-10-30 11:02:56.137860
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = 'af627d57e9ff'
  down_revision = '6562b467886d'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.create_table('groups',
      sa.Column('id', sa.Integer(), nullable=False),
      sa.Column('name', sa.String(length=255), nullable=True),
      sa.PrimaryKeyConstraint('id')
      )
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_table('groups')
      # ### end Alembic commands ###
  