topic Re: Creating a dataset to capture all the observations of all tables in a program in SAS Programming

Creating a dataset to capture all the observations of all tables in a program

lei — Thu, 16 Aug 2018 16:14:17 GMT

Hi,

I think having not programmed anything new lately has really deteriorated my skills.

I have a really long program. I want to create a secondary QA dataset which captures all the table names, observations numbers, variable numbers as the program is running. This way in each step, I can compare observation numbers to ensure that they all match. This needs to be automated which is why I am asking for help here.

How do I do this in a macro? I know how to set up macro variables to do this (see below). However, I cannot figure out how to do it in a dataset.

%MACRO OBSNVARS(DS);
%GLOBAL DSET NVARS NOBS;
%LET DSET=&DS;

/* OPEN DATA SET PASSED AS THE MACRO PARAMETER */
%LET DSID = %SYSFUNC(OPEN(&DSET)); /*1 IF DATASET EXISTS; 0 IF DATASET DOES NOT EXIST*/

/* IF THE DATA SET EXISTS, GET THE NUMBER OF OBSERVATIONS */
/* AND VARIABLES AND THEN CLOSE THE DATA SET */
%IF &DSID %THEN
%DO;
%LET NOBS =%SYSFUNC(ATTRN(&DSID,NOBS));
%LET NVARS=%SYSFUNC(ATTRN(&DSID,NVARS));
%LET RC = %SYSFUNC(CLOSE(&DSID));
%END;

/* OTHERWISE, WRITE A MESSAGE THAT THE DATA SET COULD NOT BE OPENED */
%ELSE %PUT OPEN FOR DATA SET &DSET FAILED - %SYSFUNC(SYSMSG());



%MEND OBSNVARS;

Re: Creating a dataset to capture all the observations of all tables in a program

Reeza — Thu, 16 Aug 2018 16:48:45 GMT

Would it be easier to hit SASHELP.VCOLUMN instead and retrieve that information?

Would it also make sense to pass two data set names in so it can compare the record counts and let you know if there's an issue?

@lei wrote:

Hi,

I think having not programmed anything new lately has really deteriorated my skills.

I have a really long program. I want to create a secondary QA dataset which captures all the table names, observations numbers, variable numbers as the program is running. This way in each step, I can compare observation numbers to ensure that they all match. This needs to be automated which is why I am asking for help here.

How do I do this in a macro? I know how to set up macro variables to do this (see below). However, I cannot figure out how to do it in a dataset.
%MACRO OBSNVARS(DS);
%GLOBAL DSET NVARS NOBS;
%LET DSET=&DS;

/* OPEN DATA SET PASSED AS THE MACRO PARAMETER */
%LET DSID = %SYSFUNC(OPEN(&DSET)); /*1 IF DATASET EXISTS; 0 IF DATASET DOES NOT EXIST*/

/* IF THE DATA SET EXISTS, GET THE NUMBER OF OBSERVATIONS */
/* AND VARIABLES AND THEN CLOSE THE DATA SET */
%IF &DSID %THEN
%DO;
%LET NOBS =%SYSFUNC(ATTRN(&DSID,NOBS));
%LET NVARS=%SYSFUNC(ATTRN(&DSID,NVARS));
%LET RC = %SYSFUNC(CLOSE(&DSID));
%END;

/* OTHERWISE, WRITE A MESSAGE THAT THE DATA SET COULD NOT BE OPENED */
%ELSE %PUT OPEN FOR DATA SET &DSET FAILED - %SYSFUNC(SYSMSG());



%MEND OBSNVARS;

Re: Creating a dataset to capture all the observations of all tables in a program

lei — Thu, 16 Aug 2018 16:57:36 GMT

ABSOLUTELY. Thank you.

Re: Creating a dataset to capture all the observations of all tables in a program

Reeza — Thu, 16 Aug 2018 16:58:33 GMT

If you don't want specific variable information, just the number of rows/variables SASHELP.VTABLE is the one you want.