text: """users table
  
  Revision ID: e517276bb1c2
  Revises: 
  Create Date: 2017-09-11 11:23:05.566844
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = 'e517276bb1c2'
  down_revision = None
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.create_table('user',
      sa.Column('id_', sa.Integer(), nullable=False),
      sa.Column('username', sa.String(length=64), nullable=True),
      sa.Column('email', sa.String(length=120), nullable=True),
      sa.Column('password_hash', sa.String(length=128), nullable=True),
      sa.PrimaryKeyConstraint('id_')
      )
      op.create_index(op.f('ix_user_email'), 'user', ['email'], unique=True)
      op.create_index(op.f('ix_user_username'), 'user', ['username'], unique=True)
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_index(op.f('ix_user_username'), table_name='user')
      op.drop_index(op.f('ix_user_email'), table_name='user')
      op.drop_table('user')
      # ### end Alembic commands ###
  