sqlalchemy中text 的使用问题？

Question

topics='1,4,7'
t=text("SELECT * FROM tb_rcsy where id in (:ids))
rcsy=conn.execute(t, ids=topics).fetchall()
print rcsy

出错：Warning: Truncated incorrect DOUBLE value: '1,4,7'

我测试了一下，如果直接把变量放进去：

t=text("SELECT * FROM tb_rcsy where id in (1,4,7))
rcsy=conn.execute(t).fetchall()
print rcsy

就ok.


问题：如何处理像ids这样的变量？

ps:如果是逗号隔开，就是字符串，但是in后面又不需要字符串，两难！

Answer 1

find_in_set

Answer 2

>>> from sqlalchemy.sql import text
>>> s = text(
...     "SELECT users.fullname || ', ' || addresses.email_address AS title "
...         "FROM users, addresses "
...         "WHERE users.id = addresses.user_id "
...         "AND users.name BETWEEN :x AND :y "
...         "AND (addresses.email_address LIKE :e1 "
...             "OR addresses.email_address LIKE :e2)")
SQL>>> conn.execute(s, x='m', y='z', e1='[e-mail]', e2='[e-mail]').fetchall() 
[(u'Wendy Williams, [e-mail]',)]

Answer 3

了解一下sql bind的机制