SAS宏字符串引用问题导致IN操作不起作用？

问：

都： 执行 IN 运算符以匹配宏字符串中的单词时，引号是必需的。但是，结果很沮丧，有人会提醒我我错过了什么吗？ 此宏字符串是从 proc sql 创建的，如下所示 '''

proc sql noprint;
  select memname into :domains separated by ' '
  from sashelp.vtable
  where libname='SDTM';
quit;

''' 接下来，我使用此语句引用了字符串 '''

%let domains_quoted = %nrbquote(')%qsysfunc(prxchange(s/\s+/%nrbquote(',')/oi,-1,&domains))%nrbquote(');

''' 在日志中，它没有显示任何问题

SYMBOLGEN:  Macro variable DOMAINS_QUOTED resolves to 'AE','CM','DM','DS','EG','EX',...

然后，我希望我可以过滤输出数据集。 '''

data want;
set have;
if dname in (&domains_quoted);
run;

''' 我收到错误消息说：

SYMBOLGEN:  Some characters in the above value which were subject to macro quoting have been unquoted for printing.
ERROR 22-322: Syntax error, expecting one of the following: a quoted string, a numeric constant, a datetime constant,
              a missing value, iterator, (.

有人会提醒我在这些步骤中错过了什么吗？非常感谢。