SAS导出日期格式(SAS Export date format)

 嗨我正在尝试从一个日期文件夹导入数据（成功），所以文件路径读取/年/月/日（*今天的日期） 
 
 然后我调整了一些数据（再次成功）。 一旦完成，我想将它导出到一个文件夹，该文件夹是我从它取得的文件夹前29天。 
 
 这是我目前的宏： 
 
%LET TODAY = %SYSFUNC(TODAY());
%PUT &TODAY;
%LET TODAYA = %SYSFUNC(PUTN(&TODAY,DDMMYYn8.));
%PUT &TODAYA;
%LET TWENTYNINE = %SYSFUNC(PUTN(&TODAY.+29,DDMMYYn8.)); 
%PUT &TWENTYNINE;
%LET T_DATE = %SYSFUNC(PUTN(&TODAY,DDMMYYn8..));
%LET T_YEAR = %SYSFUNC(YEAR(&TODAY));
%LET T_MONTH = %SYSFUNC(MONTH(&TODAY));
%LET P_DATE = %SYSFUNC(PUTN(&TWENTYNINE,DDMMYYn8..));
**%PUT &P_DATE;
%LET P_YEAR = %SYSFUNC(YEAR(&P_DATE));
%LET P_MONTH = %SYSFUNC(MONTH(&P_DATE));**
 
 P_Date显示错误： 
 
 
 
 错误：由％SYSFUNC或％QSYSFUNC宏函数引用的参数1功能MONTH不是数字。 错误：在％SYSCALL，％SYSFUNC或％QSYSFUNC参数列表中检测到无效参数。 ％SYSCALL语句或％SYSFUNC或％QSYSFUNC函数引用的执行已终止。 
 
 
 但是我无法得到我的头，任何帮助都会受到大力赞赏。 

Hi I am trying to import data (successfully) from a folder that is a date so the file path reads /year/month/date (*today's date)
 
I am then tweaking some of the data (again successfully). Once that is done I want to export it to a folder that is 29 days forward from the folder I took it from.
 
Here is my current macro:
 
%LET TODAY = %SYSFUNC(TODAY());
%PUT &TODAY;
%LET TODAYA = %SYSFUNC(PUTN(&TODAY,DDMMYYn8.));
%PUT &TODAYA;
%LET TWENTYNINE = %SYSFUNC(PUTN(&TODAY.+29,DDMMYYn8.)); 
%PUT &TWENTYNINE;
%LET T_DATE = %SYSFUNC(PUTN(&TODAY,DDMMYYn8..));
%LET T_YEAR = %SYSFUNC(YEAR(&TODAY));
%LET T_MONTH = %SYSFUNC(MONTH(&TODAY));
%LET P_DATE = %SYSFUNC(PUTN(&TWENTYNINE,DDMMYYn8..));
**%PUT &P_DATE;
%LET P_YEAR = %SYSFUNC(YEAR(&P_DATE));
%LET P_MONTH = %SYSFUNC(MONTH(&P_DATE));**
 
The P_Date reveals the error:
 
 
 
ERROR: Argument 1 to function MONTH referenced by the %SYSFUNC or %QSYSFUNC macro function is not a number. ERROR: Invalid arguments detected in %SYSCALL, %SYSFUNC, or %QSYSFUNC argument list. Execution of %SYSCALL statement or %SYSFUNC or %QSYSFUNC function reference is terminated.
 
 
But I cant get my head around it any help would be massively appreciated.

原文：https://stackoverflow.com/questions/35010237