150b205df625_.py 文件源码

def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_unique_constraint('User_email_key', 'User', ['email'])
    op.drop_index(op.f('ix_User_username'), table_name='User')
    op.alter_column('User', 'email',
               existing_type=sa.VARCHAR(),
               nullable=True)
    op.drop_column('User', 'username')
    # ### end Alembic commands ###