怎么做Flask-sqlalchemy - ＆gt;选择*，（选择...）作为dist

Question

我正在重新格式化一些旧代码，我有

        query = db.engine.execute('SELECT *, ( SELECT min(levenshtein(a, \'{}\''.format(word) + ', 1, 1, 1)) FROM ' +
                              'regexp_split_to_table(description_unaccent, \' \') as a) as distance FROM '
                              '"BD_TABLE" ORDER BY distance')

我尝试修改为：

    dist = func.levenshtein(BD_TABLE.description_unaccent, data['text'])
    query = BD_TABLE.query.filter(dist <= 5).order_by(dist).limit(10)

但是我没有得到距离栏

(SELECT *, ( SELECT min(levenshtein(a,word, 1, 1, 1)) FROM
regexp_split_to_table(description_unaccent,word) as a) as distance)

我读过有关alias和label的内容，但我无法将其作为变量使用，因为后来我想做一些事情：

    for row as query:
        print(row.distance)