Is passing a list as a bound variable safe from SQL injection?

From: "W(dot) Matthew Wilson" <matt(at)tplus1(dot)com>
To: psycopg(at)postgresql(dot)org
Subject: Is passing a list as a bound variable safe from SQL injection?
Date: 2013-10-02 15:48:13
Message-ID: CAGHfCUD2sNRXQYEzPXq=nh3++b4_tm6dpnqrfq0dS1fru3xEew@mail.gmail.com
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Here's the python code:

cursor.execute(textwrap.dedent("""
select *
from bundles
where bundle_id = any(%(list_of_bundle_ids))
"""), {'list_of_bundle_ids': [2,3,4,5,6,7]})

Is there more of a risk of SQL injection here by passing in a list of
integers list this?

Also, is there some simple way I can pass in a list of strings that could
be converted to integers, like this:

["2", "33", "444"]

When I tried passing a list containing a string, I got an "operator does
not exist" error.

Finally, I feel like recently I read a blog post that described how using
"= any(array[...])" was much slower than using some other approach.

But now I can't find that blog post, and I don't remember the other
approach. Any ideas?

Thanks for the help!

Matt

--
W. Matthew Wilson
matt(at)tplus1(dot)com
http://tplus1.com

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