/*--------------------------------------------------
* Name: Step R20 Populate DWH_R_LOCATION
* Description: Code generated for Server SASMain
* Generated: Mon Nov 15 19:43:38 CST 2004
*--------------------------------------------------*/
/* This is the setup required to capture the transformation return code */
%let JOB_RC=0;
%let TRANS_RC=0;
%global SQLRC;
%global SYSERR;

%macro RCSET(error);
  %if (&error gt &TRANS_RC) %then
    %let TRANS_RC=&error;
  %if (&error gt &JOB_RC) %then
    %let JOB_RC=&error;
%mend RCSET;

%let TRANS_RC=0;
/*
* Access the data for WDATA - MASTER
*/
LIBNAME MASTER BASE "Data/SAS/WDATA/MASTER" ;

%RCSET(&syslibrc);
谁能帮我解说下这段代码 。谢谢！！！！！