执行这个函数模块的用户需要有在逻辑表级访问数据的权限。
The user executing the function module needs to have the appropriate rights to access data at the logical table level.
DB 2 UD b查看其目录表，看看该用户是否被授予了这个表的SELECT权限。
DB2 UDB looks in its catalog tables to see if this user has been granted permission to SELECT from this table.
用于访问外部表的权限由IDS通过外部表上的用户访问特权治理，还受到由操作系统管理的数据文件权限的治理。
The permissions used to access external tables is governed by the user access privileges on the external table by IDS as well as the data file permissions managed by the operating system.
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