text: """empty message
  
  Revision ID: 6acc6a85ff11
  Revises: 6d8bb4367475
  Create Date: 2017-03-20 16:45:15.824760
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = '6acc6a85ff11'
  down_revision = '6d8bb4367475'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.create_table('users',
      sa.Column('user_id', sa.Integer(), nullable=False),
      sa.Column('email', sa.String(length=50), nullable=True),
      sa.Column('password', sa.String(length=15), nullable=True),
      sa.Column('first_name', sa.String(length=15), nullable=True),
      sa.Column('last_name', sa.String(length=15), nullable=True),
      sa.Column('registered_on', sa.DateTime(), nullable=True),
      sa.PrimaryKeyConstraint('user_id')
      )
      op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_index(op.f('ix_users_email'), table_name='users')
      op.drop_table('users')
      # ### end Alembic commands ###
  