I have a SAS macro part that will run the entire dataset and do some analysis, and during the analysis part, each instance is dealt with once a time.so that the entire dataset can be run and we could keep an eye on the 'log' file. However, I would like to split the entire dataset into several parts. (Ex, first 500 observations, 501~1000 observations, etc). Which means the engine will stop after running 500 instances, and then run again. And in the end they can be generated in one table as before. How can I add this 'split' part into my prior code? Initial Code: %macro mymac; OPTIONS NOTES SOURCE SOURCE2 MPRINT MLOGIC MERROR SYMBOLGEN; /* Part A starts*/ data _null_; set WORK.LOCATION end=last; if last then call symput('nfiles',_n_); run; %do i=1 %to &nfiles; data _null_; set oriework.PO_LOC; if &i=_n_ then call symput('code',LOCATION_ID); run; /* Part A ends */ %put &code; proc sql; create table WORK.pt as select ...... quit; %if %sysfunc(exist(WORK.result)) %then %do; data WORK.result; set WORK.result WORK.pt; run; %end; %else %do; data WORK.result; set WORK.pt; run; %end; %end; %mend; %mymac;   Where 'WORK.LOCATION' is the dataset that I call in 'proc sql' procedure that contains all the 'LOCATION_ID" information that I need. Part A is where Macro works that it runs from start to the end; can I replace it with a data splitting procedure so that every 500 observations are run altogether and finally combined to one table?   Thank you! ... View more

I have a SAS macro part that will run the entire dataset and do some analysis, and during the analysis part, each instance is dealt with once a time.so that the entire dataset can be run and we could keep an eye on the 'log' file. However, I would like to split the entire dataset into several parts. (Ex, first 500 observations, 501~1000 observations, etc). Which means the engine will stop after running 500 instances, and then run again. And in the end they can be generated in one table as before. How can I add this 'split' part into my prior code?   Part of Initial Code: %macro mymac; OPTIONS NOTES SOURCE SOURCE2 MPRINT MLOGIC MERROR SYMBOLGEN; data _null_; set WORK.LOCATION end=last; if last then call symput('nfiles',_n_); run; %do i=1 %to &nfiles; data _null_; set oriework.PO_LOC; if &i=_n_ then call symput('code',LOCATION_ID); run; %put &code; proc sql; create table WORK.pt as select ...... quit; %if %sysfunc(exist(WORK.result)) %then %do; data WORK.result; set WORK.result WORK.pt; run; %end; %else %do; data WORK.result; set WORK.pt; run; %end; %end; %mend; %mymac;   Where 'WORK.LOCATION' is the dataset that I call in 'proc sql' procedure that contains all the 'LOCATION_ID" information that I need.  I want to add split part somewhere around '%do i=1 %to &nfiles;' (in bold) And work.result is the result gonna stay.  Thank you!   ... View more

Hi,   I am solving a linear problem with about 400 variables and related constraints.    How can I conduct parameter analysis to find out under which parameters cuuld I generate feasible solutions, and vice versa.   Thank you!     ... View more

Hi, On SAS proc optmodel, If I ahve already defined raw_quantity_1[j,m] and raw_quantity1_1[m,q], they are in different constraints. The relationship between them is sum {q in Price_intervals} raw_quantity1_1[m,q] = raw_quantity_1[1,m]                                            and sum {q in Price_intervals} raw_quantity2_1[m,q] = raw_quantity_1[2,m]                                            and sum {q in Price_intervals} raw_quantity3_1[m,q] = raw_quantity_1[3,m] But raw_quantity_1[1,m], raw_quantity_1[2,m] and raw_quantity_1[3,m] should all be expressed as raw_quantity_1[j,m] Is there any constraint that I can define like that? Thanks and sorry I am not able to upload any file. ... View more