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PD,
If your text file is kept in primary key order (and your SAS dataset is
also in primary key order) try the following (untested) code:
data _null_;
infile bigfbtxt;
file myfbtxt;
set mysasdata(keep=primkey);
by primkey; /* not necessary */
keyfound = 0;
do while (keyfound = 0);
input @&keylocn keytext $16.;
if primkey = keytext then put _infile_;
keyfound = 1;
end;
run;
If your text file is NOT kept in primary key order, you could index your
SAS dataset and try the following (untested) code:
data _null_;
infile bigfbtxt;
file myfbtxt;
input @&keylocn primkey $16.;
set mysasdata(keep=primkey) key=primkey;
if _iorc_ = %sysrc(_sok) then put _infile_;
run;
HTH,
Dave
PD
<sophe88@YAHOO.CO To: SAS-L@LISTSERV.UGA.EDU
M> cc:
Sent by: "SAS(r) Subject: Cut a part out of a big flat fixed length text
Discussion" file
<SAS-L@LISTSERV.U
GA.EDU>
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| ( ) Urgent(4 hours) |
26/06/2003 14:00 | (*) Normal(24-48) |
Please respond to | ( ) Low(72 hours) |
PD |---------------------| Expires on
I have a big fixed length text file with about 2000 vars. The primary
key is a 16-character var. There are about 42 millions obs in the
file. It sits on a OS390 tape image. (can not browse it, but
reading/sharing is fine). I have another SAS dataset that has about
150k of this 16-charter var.
I need to preseve the layout of the text file, but only want to
records for the 150k people. I have the layout for the text file, but
do not want to write them into a SAS data set, afraid the layout may
not be preseved.
I used to run a JCL based Syncsort program that allows me to
match-merge two text files using a common key without transferring
them to SAS files. Recently the program is not functioning properly.
So I am resorting to SAS again.
Heard about CNTln option in proc format. Don't know how relevant that
is to my problem.
Thank you.
PD
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