This variable is then used as the context for a for statement.
然后，将这个变量用作for语句的上下文。
No other kind of result objects can be used as a context variable.
不能将任何其他类型的结果对象用作上下文变量。
To verify that you have the proper environment variable setup, you can try to connect to the database DIRDB01 as shown earlier; it should work from root context now.
为验证您有合理的环境变量设置，您可以尝试像之前一样连接到数据库dirdb01；现在它应当可以通过root上下文工作了。
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