topic Re: SAS MACRO WITH SLEEP FUNCTION in SAS Programming

SAS MACRO WITH SLEEP FUNCTION

Bottoni — Fri, 25 Nov 2016 16:20:07 GMT

I need to start to process my program only if a file was uploaded in a directory.

I developed a code to verify if the file exist and it works well when the file are in the directory!

When the file doesn't exist I tryed to make the program wait a period of time then process the code again with the sleep function. However it isn't working. The program doesn't wait the specified time.

Sorry for my bad english. Can anyone help me?

SAS code:

%LET TESTFILE = "/usuario/teste/TB_SAIDA_GPC.TXT";            

%MACRO FINDIT;   
	%DO %UNTIL(%SYSFUNC(FILEEXIST(&TESTFILE)));

			PROC SQL;
			CREATE TABLE WORK.TESTE AS 
			SELECT *
			FROM WORK.TB_SAIDA_GPC;
			QUIT;	

			SLEEP(60);
		
	 %END;
%MEND;                                         
    
%FINDIT;

Re: SAS MACRO WITH SLEEP FUNCTION

mkeintz — Fri, 25 Nov 2016 16:54:46 GMT

Put the PROC SQL statement after the %end.

Re: SAS MACRO WITH SLEEP FUNCTION

Haikuo — Tue, 28 Mar 2017 16:12:47 GMT

From SAS manual, it reads "The SLEEP function suspends the execution of a program that invokes this function for a period of time that you specify. The program can be a DATA step, macro, IML, SCL, or anything that can invoke a function. The maximum sleep period for the SLEEP function is 46 days."

So Sleep() can't be used by itself. Try below:

%LET TESTFILE = "/usuario/teste/TB_SAIDA_GPC.TXT";            

%MACRO FINDIT;   
	%DO %UNTIL(%SYSFUNC(FILEEXIST(&TESTFILE)));

		data _null_;
		rc=SLEEP(60);
		run;
		
	 %END;

	PROC SQL;
 	CREATE TABLE WORK.TESTE AS 
	SELECT *
	FROM WORK.TB_SAIDA_GPC;
	QUIT;	

%MEND;                                         
    
%FINDIT;

Re: SAS MACRO WITH SLEEP FUNCTION

Patrick — Sat, 26 Nov 2016 00:26:04 GMT

You've got already all you need from others to make your current code work.

If available then I personally would go an approach using a scheduler where you trigger your process "on file arrival".

Re: SAS MACRO WITH SLEEP FUNCTION

Bottoni — Sat, 26 Nov 2016 00:40:33 GMT

Thank you for the answer. The program is working perfectly!

Re: SAS MACRO WITH SLEEP FUNCTION

Bottoni — Sat, 26 Nov 2016 00:44:57 GMT

I've tryed it. Doesn't work in the company where I work. SAS Administrators say it doesn't work because there the app is virtualized.