Date:         Wed, 21 Oct 1998 17:59:17 +0500
Reply-To:     Bernard Tremblay <bernard@CAPITALE.QC.CA>
Sender:       "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From:         Bernard Tremblay <bernard@CAPITALE.QC.CA>
Subject:      Wrong stuff in pipe ???

Hi,
 
        I'm trying to read a compressed SAS file directly from SAS.
I tried the sample program from SAS institute but I get error messages.
I first created the named pipe in my home, then I compressed a small SAS file
 (named work1.pipe).
 
Here a sample of what I get from the LOG:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
98     libname compr  '~/named_pipe';
NOTE: Libref COMPR was successfully assigned as follows:
      Engine:        TAPE
      Physical Name: /home/bernard/named_pipe
99     filename nwrpipe pipe 'uncompress > ~/named_pipe < /work1/pipe.ssd01.Z &';
100    data _null_;
101     infile nwrpipe;
102    run;
 
NOTE: The infile NWRPIPE is:
      Pipe command="uncompress > ~/named_pipe < /work1/pipe.ssd01.Z &"
 
NOTE: 0 records were read from the infile NWRPIPE.
NOTE: DATA statement used:
      real time           4.510 seconds
      cpu time            0.106 seconds
 
 
103    data new; set compr.pipe;run;
ERROR: The record formats are different.
 
NOTE: The SAS System stopped processing this step because of errors.
WARNING: The data set WORK1.NEW may be incomplete.  When this step was stopped there were 0 observations and 0 variables.
WARNING: Data set WORK1.NEW was not replaced because this step was stopped.
NOTE: DATA statement used:
      real time           1.120 seconds
      cpu time            0.075 seconds
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 
        From the message I have, I understant that SAS is expecting something
that would be created with the TAPE engine.  It is not the case, this is a
standard disk file I compressed with Unix compress command.
 
        I tried to rename the named pipe like a SAS datasets to fool SAS and
make it think the pipe is a SAS file.  This don't work either... SAS give me
the following message:
 
WARNING: File '/home/bernard/npipe.ssd01' is shorter than expected.
109    data new; set compr.npipe;run;
ERROR: Invalid header on file COMPR.NPIPE.DATA.
 
 
        Is the example from SAS institure wrong or am I missing something ???
 
 
        Regards,
                Bernard Tremblay
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