sas存储过程中的宏变量(Macro variable in sas stored process)

 我有一个SAS代码。 
 
proc sql;
create test as select * from test2 where user_name = &username;quit;
 
 当我用%let username=Bob在SAS EG中运行时，它运行正常。 但我需要使用存储过程运行它（变量用户名是连接用户的内部参数，我从sas存储过程代码中删除%let username=Bob ）。 存储过程制动器出错。 
 
 在日志文件中我看到变量： 
 
 _username=Bob但存储过程中的代码找不到它。 如何在SAS存储过程代码中使用这个变量？ 谢谢！ 

I have a code in SAS.
 
proc sql;
create test as select * from test2 where user_name = &username;quit;
 
when I Run in SAS EG with %let username=Bob it runs normal. But I need to run it with stored Process (variable username is internal parameter in connected user and I delete %let username=Bob from sas stored process code). Stored Process brake with an error.
 
In log file I see variable:
 
_username=Bob but code in stored process can not find it. How to use this variable in SAS Stored process code? Thank you!

原文：https://stackoverflow.com/questions/34200750