sas - 宏变量: Apparent symbolic reference not resolved

Question

我在以下(部分)宏中遇到未解析的宏变量的问题:

DATA _NULL_;
  SET TempVarFormat END=Last;
  LENGTH FormatValues $10000;
  RETAIN FormatValues;
  IF &OnlyNumeric = 1 THEN
    FormatValues = CATX(" ",FormatValues,STRIP(LookUpValue)||
    " = "||CATQ("A",TRIM(LookupDescription)));
  ELSE
    FormatValues = CATX(" ",FormatValues,CATQ("A"
    ,LookUpValue)||" = "||CATQ("A"
    ,TRIM(LookupDescription)));
  Test = STRIP(FormatValues);
  PUT Test /* To test buildup of variable */;
  IF Last THEN CALL SYMPUT('FormatValuesM',STRIP(FormatValues));
  IF Last THEN CALL SYMPUT('DataCollectionFK',DataCollectionFK);
RUN;
/* Make format with PROC FORMAT*/
%IF &OnlyNumeric = 1 %THEN %DO;
  PROC FORMAT LIB=WORK;
  VALUE DC&DataCollectionFK.A&AttributeFK.Format &FormatValuesM;
  RUN;
%END;
%ELSE %IF &OnlyNumeric = 0 %THEN %DO;
  PROC FORMAT LIB=WORK;
  VALUE $DC&DataCollectionFK.A&AttributeFK.Format &FormatValuesM;
  RUN;
%END;

我收到以下警告

Apparent symbolic reference FORMATVALUESM not resolved.

如果我查看日志 &DataCollectionFK 已解决，但 &FormatValues 未解决。

PROC FORMAT LIB=WORK; VALUE DC170A570Format &FormatValuesM;

有人可以建议吗？这让我发疯。

我也在没有 STRIP() 函数的情况下测试了它，并将 CALL SYMPUT 替换为 PUT 以查看变量是否已分配值。这一切都运行良好。

日志副本(根据评论中的要求)

4         +
      DATA _NULL_; SET TempVarFormat END=Last; LENGTH

5         + FormatValues $10000; RETAIN FormatValues; IF 1 = 1 THEN FormatValues = CATX(" 
",FormatValues,STRIP(LookUpValue)|| " = "||CATQ("A",TRIM(LookupDescription))); ELSE 
FormatValues = CATX(" ",FormatValues,CATQ("A" ,LookUpValue)||" = "||CATQ("A" ,TRIM
6         +(LookupDescription))); Test = STRIP(FormatValues); PUT Test ; IF Last THEN CALL 
SYMPUT('DataCollectionFK',DataCollectionFK); IF Last THEN CALL SYMPUT('FormatValuesM',Test); 
RUN;

NOTE: Numeric values have been converted to character values at the places given by: 
      (Line):(Column).
      6:107   
1 = "Ja"
1 = "Ja" 0 = "Nee"
NOTE: There were 2 observations read from the data set WORK.TEMPVARFORMAT.
NOTE: DATA statement used (Total process time):
      real time           0.00 seconds
      cpu time            0.00 seconds

6         +
        PROC FORMAT LIB=WORK;  VALUE DC170A1483Format &FormatValuesM;  RUN;;

NOTE: Format DC170A1483FORMAT is already on the library.
NOTE: Format DC170A1483FORMAT has been output.
NOTE: PROCEDURE FORMAT used (Total process time):
      real time           0.00 seconds
      cpu time            0.00 seconds

打印日志

MPRINT(CONSTRUCTVARIABLEFORMAT):   DATA TestDataSetFormat;
MPRINT(CONSTRUCTVARIABLEFORMAT):   SET TempVarFormat END=Last;
MPRINT(CONSTRUCTVARIABLEFORMAT):   LENGTH FormatValues $10000;
MPRINT(CONSTRUCTVARIABLEFORMAT):   RETAIN FormatValues;
MPRINT(CONSTRUCTVARIABLEFORMAT):   IF 1 = 1 THEN FormatValues = CATX(" 
",FormatValues,STRIP(LookUpValue)|| " = "||CATQ("A",TRIM(LookupDescription)));
MPRINT(CONSTRUCTVARIABLEFORMAT):   ELSE FormatValues = CATX(" ",FormatValues,CATQ("A" 
,LookUpValue)||" = "||CATQ("A" ,TRIM(LookupDescription)));
MPRINT(CONSTRUCTVARIABLEFORMAT):   Test = STRIP(FormatValues);
MPRINT(CONSTRUCTVARIABLEFORMAT):   PUT Test ;
MPRINT(CONSTRUCTVARIABLEFORMAT):   IF Last THEN CALL 
SYMPUT('DataCollectionFK',DataCollectionFK);
MPRINT(CONSTRUCTVARIABLEFORMAT):   IF Last THEN CALL SYMPUT('FormatValuesM',Test);
MPRINT(CONSTRUCTVARIABLEFORMAT):   RUN;
MPRINT(CONSTRUCTVARIABLEFORMAT):   PROC FORMAT LIB=WORK;
WARNING: Apparent symbolic reference FORMATVALUESM not resolved.
MPRINT(CONSTRUCTVARIABLEFORMAT):   VALUE DC170A1483Format &FormatValuesM;
MPRINT(CONSTRUCTVARIABLEFORMAT):   RUN;

编辑更多尝试: 问题在于，由于某种原因，宏变量在数据步骤期间没有获取值。在运行宏之前用空值加载宏变量，使得 该脚本不会给出错误。但该变量被解析为空变量。

删除 IF Last THEN 部分也不会改变结果。

Answer 1

当然，使用PROC FORMAT的cntlin=选项来传递包含相关格式名称、开始、结束、标签的数据集会更容易/更简单值(value)观...

一个简单的例子...

/* Create dummy format data */
data formats ;
  fmtname = 'MYCHARFMT' ;
  type = 'C' ;
  do n1 = 'A','B','C','D','E' ;
    start = n1 ;
    label = repeat(n1,5) ;
    output ;
  end ;
  fmtname = 'MYNUMFMT' ;
  type = 'N' ;
  do n2 = 1 to 5 ;
    start = n2 ;
    label = repeat(strip(n2),5) ;
    output ;
  end ;
  drop n1 n2 ;
run ;

/* dummy data looks like this... */
 fmtname     type    start    label

MYCHARFMT     C        A      AAAAAA
MYCHARFMT     C        B      BBBBBB
MYCHARFMT     C        C      CCCCCC
MYCHARFMT     C        D      DDDDDD
MYCHARFMT     C        E      EEEEEE
MYNUMFMT      N        1      111111
MYNUMFMT      N        2      222222
MYNUMFMT      N        3      333333
MYNUMFMT      N        4      444444
MYNUMFMT      N        5      555555

/* Build formats from dataset */
proc format cntlin=formats library=work ; run ;

还可以在格式数据集中定义其他几个字段，以满足低/高/缺失值、范围等的要求。

请参阅 SAS 文档 > http://support.sas.com/documentation/cdl/en/proc/61895/HTML/default/viewer.htm#a002473464.htm