https://communities.sas.com/t5/SAS-Programming/CIMPORT-and-COMPRESS-YES/m-p/51841#M10901 Greetings.<BR /> <BR /> OPTIONS COMPRESS=YES doesn't seem to work with PROC CIMPORT. What I did was:<BR /> <BR /> [1] created an uncompressed SAS-dataset and CPORTed it. Proc DATASETS / CONTENTS shows me that the SAS-dataset is, indeed, uncompressed.<BR /> [2] I then deleted the dataset and recreated it with OPTIONS COMPRESS=YES. Works fine. Proc DATASETS /CONTENTS shows me COMPRESS CHAR etc.<BR /> [3] Next I CIMPORTed the file from step [1] and I specified OPTIONS COMPRESS=YES in the program.<BR /> <BR /> Much to my surprise proc DATASETS / CONTENTS shows me that the dataset is no longer compressed! Is this how it's supposed to work? Proc CIMPORT undoes my compression? We're running (mainframe) SAS 9.0101M3<BR /> <BR /> TIA Mon, 06 Oct 2008 08:47:49 GMT Willempie 2008-10-06T08:47:49Z https://communities.sas.com/t5/SAS-Programming/CIMPORT-and-COMPRESS-YES/m-p/51841#M10901 Greetings.<BR /> <BR /> OPTIONS COMPRESS=YES doesn't seem to work with PROC CIMPORT. What I did was:<BR /> <BR /> [1] created an uncompressed SAS-dataset and CPORTed it. Proc DATASETS / CONTENTS shows me that the SAS-dataset is, indeed, uncompressed.<BR /> [2] I then deleted the dataset and recreated it with OPTIONS COMPRESS=YES. Works fine. Proc DATASETS /CONTENTS shows me COMPRESS CHAR etc.<BR /> [3] Next I CIMPORTed the file from step [1] and I specified OPTIONS COMPRESS=YES in the program.<BR /> <BR /> Much to my surprise proc DATASETS / CONTENTS shows me that the dataset is no longer compressed! Is this how it's supposed to work? Proc CIMPORT undoes my compression? We're running (mainframe) SAS 9.0101M3<BR /> <BR /> TIA Mon, 06 Oct 2008 08:47:49 GMT https://communities.sas.com/t5/SAS-Programming/CIMPORT-and-COMPRESS-YES/m-p/51841#M10901 Willempie 2008-10-06T08:47:49Z https://communities.sas.com/t5/SAS-Programming/CIMPORT-and-COMPRESS-YES/m-p/51842#M10902 By reading the documentation, including this SAS note: <A href="http://support.sas.com/kb/4/720.html" target="_blank">http://support.sas.com/kb/4/720.html</A>, my guess is that the compression option used when creating the transport file is taking precedence of any options set in the current session.<BR /> <BR /> /Linus Mon, 06 Oct 2008 08:59:27 GMT https://communities.sas.com/t5/SAS-Programming/CIMPORT-and-COMPRESS-YES/m-p/51842#M10902 LinusH 2008-10-06T08:59:27Z https://communities.sas.com/t5/SAS-Programming/CIMPORT-and-COMPRESS-YES/m-p/51843#M10903 Linus, I think you're right. I found Usage Note 4720 and, indeed, CPORT preserves the compression-attribute and CIMPORT recreates with whatever info it finds on the transport-file.<BR /> <BR /> How unfortunate. Mon, 06 Oct 2008 09:22:33 GMT https://communities.sas.com/t5/SAS-Programming/CIMPORT-and-COMPRESS-YES/m-p/51843#M10903 Willempie 2008-10-06T09:22:33Z