I have a text variable that has non-SAS date values; i.e. "8/7/2009 0:00:00".
I want to convert this into a SAS usable date: 07AUG2009.
I have been trying to cut up the value into segments using scan(date,1,"/") for the month, etc. in order to convert them into a usable string.
data dates_test;
set dates;
day=scan(date,2,"/");
monthnum=scan(date,1,"/");
year=substr(scan(date,3,"/"),1,4);
if monthnum=1 then monthname='JAN';
else if monthnum=2 then monthname='FEB';
else if monthnum=3 then monthname='MAR';
else if monthnum=4 then monthname='APR';
else if monthnum=5 then monthname='MAY';
else if monthnum=6 then monthname='JUN';
else if monthnum=7 then monthname='JUL';
else if monthnum=8 then monthname='AUG';
else if monthnum=9 then monthname='SEP';
else if monthnum=10 then monthname='OCT';
else if monthnum=11 then monthname='NOV';
else if monthnum=12 then monthname='DEC';
startdttxt=compress(day)||compress(monthname)||compress(year);
/*
if length(startdttxt)=8 then startdt=input('0' || startdttxt,date9.);
else startdt=input(startdttxt,date9.);
keep date day monthnum monthname year startdttxt startdt;
format startdt date9.;
run;
Here are my questions:
1) Is there an easier way to do this conversion without cutting up the variable?
2) Wether there is an easier way or not, is there a way to convert the number 1 into January, 2 into February, etc.? I can convert January to 1, February to 2, etc. using the month() function, but not the other way around.
There are easier methods...
322 data _null_;
323 x = "8/7/2009 0:00:00";
324 dt = input(x,mdyampm.);
325 put dt=datetime.;
326 date = datepart(dt);
327 put date=date9.;
328 run;
dt=07AUG09:00:00:00
date=07AUG2009
Ignore the /* in the code.
To translate a numeric character into a represented month-name, use the MONNAME format in an assignment statement, along with a static 'day' and 'year' argument with the MDY function.
data _null_;
your_month = 2;
Month = put(mdy(your_month,1,year(today())),monname.);
putlog _all_;
run;
For the various INFORMATs to translate your date-time string, have a look at the SAS DOC - here is a reasonable Google advanced search argument to search the SAS-hosted documentation on its support website:
mm/dd/yyyy datetime informat site:sas.com
Scott Barry
SBBWorks, Inc.
There are easier methods...
322 data _null_;
323 x = "8/7/2009 0:00:00";
324 dt = input(x,mdyampm.);
325 put dt=datetime.;
326 date = datepart(dt);
327 put date=date9.;
328 run;
dt=07AUG09:00:00:00
date=07AUG2009
It seems to be even simpler:
data _null_ ;
x = "8/7/09 1:23:45" ;
date = input(x,mmddyy10.) ;
format date date9. ;
putlog _all_ ;
run ;
data_null_; wrote:
There are easier methods...
322 data _null_;
323 x = "8/7/2009 0:00:00";
324 dt = input(x,mdyampm.);
325 put dt=datetime.;
326 date = datepart(dt);
327 put date=date9.;
328 run;
dt=07AUG09:00:00:00
date=07AUG2009
I thought about that but didn't try it. Is the algorithm used by the informat documented?
Howles wrote:
It seems to be even simpler:
data _null_ ;
x = "8/7/09 1:23:45" ;
date = input(x,mmddyy10.) ;
format date date9. ;
putlog _all_ ;
run ;
data_null_; wrote:
There are easier methods...
322 data _null_;
323 x = "8/7/2009 0:00:00";
324 dt = input(x,mdyampm.);
325 put dt=datetime.;
326 date = datepart(dt);
327 put date=date9.;
328 run;
dt=07AUG09:00:00:00
date=07AUG2009
I don't think it's documented, at least at
My theory is that once SAS has detected three delimiters, it knows enough to extract the MM, DD, and YY subfields and stops looking.
My test:
data _null_ ;
do x = "8/7/09 1:23:45"
, "8/7/09#1:23:45"
, "8/7/09J1:23:45"
, "8/7/09JJJ11111"
, "8/7/09JJJJ1111" ;
date = input(x,mmddyy10.) ;
format date date9. ;
putlog x= date= ;
end ;
_error_ = 0 ;
run ;
Result:
x=8/7/09 1:23:45 date=07AUG2009
x=8/7/09#1:23:45 date=07AUG2009
x=8/7/09J1:23:45 date=07AUG2009
x=8/7/09JJJ11111 date=07AUG2009
NOTE: Invalid argument to function INPUT at line 669 column 11.
x=8/7/09JJJJ1111 date=.
Seems that letters, not just special characters, work as delimiters. But there is evidence that SAS somehow cares about whatever comes after that third delimiter.
data_null_; wrote:
I thought about that but didn't try it. Is the algorithm used by the informat documented?
Howles wrote:
It seems to be even simpler:
data _null_ ;
x = "8/7/09 1:23:45" ;
date = input(x,mmddyy10.) ;
format date date9. ;
putlog _all_ ;
run ;
data_null_; wrote:
There are easier methods...
322 data _null_;
323 x = "8/7/2009 0:00:00";
324 dt = input(x,mdyampm.);
325 put dt=datetime.;
326 date = datepart(dt);
327 put date=date9.;
328 run;
dt=07AUG09:00:00:00
date=07AUG2009
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