无法从 plperlu 函数中打开文件
我正在尝试从 plperlu 函数内写入文件，但收到“权限被拒绝”错误。
ERROR: error from Perl function "[$name]": could not open the file: Permission denied at line 46.
我可以使用 perl 脚本写入文件，该脚本本质上做同样的事情。我有读写权限，并且我还正确配置了 pg_hba.conf 文件。并知道可能是什么导致了这个问题？
I'm trying to write to a file from within a plperlu function and I'm getting Permission Denied errors.
ERROR: error from Perl function "[$name]": could not open the file: Permission denied at line 46.
I can write to a file using a perl script that essentially does the same thing. I have read-write permissions and I've also configured the pg_hba.conf file correctly. And idea what might be causing the problem?
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您可能拥有必要的权限，但 PostgreSQL 服务器可能没有像您一样运行。您的 plperlu 代码将在具有服务器权限的服务器上下文中运行。一种快速简单的检查方法是将文件路径更改为
/tmp中的某个内容，然后查看它是否有效；如果是这样，那么您只需将文件写入 PostgreSQL 服务器具有写入权限的位置即可。You may have the necessary permissions but the PostgreSQL server probably isn't running as you. Your plperlu code will be running in the server's context with the server's permissions. A quick and easy way to check would be to change the file path to something in
/tmpand see if it works; if it does then you just need to write your file somewhere that the PostgreSQL server has write access to.