text: """fourth migration
  
  Revision ID: 909ed6089702
  Revises: 
  Create Date: 2020-07-24 05:47:21.314217
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = '909ed6089702'
  down_revision = None
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.create_table('users',
      sa.Column('id', sa.Integer(), nullable=False),
      sa.Column('username', sa.String(length=250), nullable=True),
      sa.Column('email', sa.String(length=250), nullable=True),
      sa.Column('password_hash', sa.String(length=400), nullable=True),
      sa.PrimaryKeyConstraint('id')
      )
      op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
      op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=False)
      op.create_table('recipes',
      sa.Column('id', sa.Integer(), nullable=False),
      sa.Column('title', sa.String(), nullable=True),
      sa.Column('recipe', sa.String(), nullable=True),
      sa.Column('description', sa.String(), nullable=True),
      sa.Column('ingredients', sa.String(), nullable=True),
      sa.Column('posted', sa.DateTime(), nullable=True),
      sa.Column('user_id', sa.Integer(), nullable=True),
      sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
      sa.PrimaryKeyConstraint('id')
      )
      op.create_table('reviews',
      sa.Column('id', sa.Integer(), nullable=False),
      sa.Column('review', sa.String(), nullable=True),
      sa.Column('posted', sa.DateTime(), nullable=True),
      sa.Column('user_id', sa.Integer(), nullable=True),
      sa.Column('recipe_id', sa.Integer(), nullable=True),
      sa.ForeignKeyConstraint(['recipe_id'], ['recipes.id'], ),
      sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
      sa.PrimaryKeyConstraint('id')
      )
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_table('reviews')
      op.drop_table('recipes')
      op.drop_index(op.f('ix_users_username'), table_name='users')
      op.drop_index(op.f('ix_users_email'), table_name='users')
      op.drop_table('users')
      # ### end Alembic commands ###
  