psycopg2 E'在表、字段和模式上
我遇到了同样的问题: python 将“E”添加到字符串
给出的所有答案都是相关的,但我正在打破我的脖子就在这上面。
问题是 psycopg2 不仅转义值,还转义模式、表和列名称,如下所示:
CREATE TABLE E'Tablename' (E'identificatie' VARCHAR(16))
它根本不应该这样做!我如何摆脱表名和列的 E 和 '' 但保留字段值的 E 和 '' ?
另一种选择
'CREATE TABLE ' + tablename + ' (' + fieldname... %
使其再次容易受到 SQL 注入的攻击。
陷入进退两难的境地..
I am having the same problem as:
python adds "E" to string
All the answers given are relevant, but I am breaking my neck on this one.
The problem is that psycopg2 not only escapes values, but also schema, table and column names like this:
CREATE TABLE E'Tablename' (E'identificatie' VARCHAR(16))
Which it simply shouldn't! How van I get rid of the E and '' for table names and columns but maintain them for field values?
the alternative
'CREATE TABLE ' + tablename + ' (' + fieldname... %
makes it vulnerable to sql injection all over again.
Stuck between a rock and a hard place..
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无论好坏,Python 接口和 Psycopg 通常不支持将用户提供的标识符替换为 SQL 命令。你必须自己动手。只需几行代码即可完成。
It is, for better or worse, generally not supported by the Python interfaces and Psycopg in particular to substitute user-supplied identifiers into SQL commands. You will have to roll your own. It can be done with a few lines of code.
好的,谢谢彼得,至少我知道不要再看了。我决定采取不同的方法:
使用脚本文件生成数据库,而不是从代码生成数据库。这将使对数据库进行“版本控制”变得更加容易。
同时,我正在查看 sqlalchemy http://www.sqlalchemy.org/ 它几乎做了什么我想要,但目前还只是一步,因为它需要对我正在重建的应用程序进行彻底的重组
Ok, thanks Peter, at least I know not to look any further. I decided to take a different approach:
Use a script file to generate the database instead of generating it from code. This will make it more easy to have "versioning" on the database.
Meanwhile, I am taking a look at sqlalchemy http://www.sqlalchemy.org/ which pretty much does what I want but is currently a step to far as it requires a drastic restructure of the application I am rebuilding