Error Handling in Proc SQL(like try Catch) - sas

Question

I doing like this
libname DZY 'Path';
Proc sql;
select * from DZ.some_table;
run;
Here I have to add an error handling like if something goes wrong in select statement or within the block I have to write error message to an separate text file in the folder.
This is what I tried
%macro sortclass;
Proc sql;
select * from DZ.some_table;
run;
%if &SQLRC gt 0 %then %goto error;
%error:
proc export data=""
run;
%exit:
%mend;
%sortclass;
I am trying to do an try catch like error handling.., How can do this in effective way. Thanks In advance

Answer 1

Base SAS does not have try/catch mechanisms, so an error due to macro generated code can cause problems with attempts to externally log messages.
filename logfile 'mysolution.log' mod;
%macro mylogger(message);
* may fail due to apriori errors;
data _null_;
file log;
put "%superq(message)";
run;
* a more advanced version would instead use macro `%sysfunc'd` invocations of
* `FOPEN FPUT FWRITE FWRITE` to append to a custom external log file;
%mend;
%macro mymacro(...);
... some SQL statement(s) ...
%if &SYSRC > 0 %then %do;
%mylogger(Failer at step 1);
%return;
%end;
... some more SQL statement(s) ...
%if &SYSRC > 0 %then %do;
%mylogger(Failer at step 2);
%return;
%end;
%mend;
Note: You can also submit SAS code from java or .net code that uses a SAS workspace session -- search for SAS integrated object model (iom) for more info. Such a solution would have a rich environment for try/catch/throw and advanced logging models.