How to convert 20011015 into a date and assign it to a global variable?
My attempts have failed along these lines:
%global var;
%local var=20011015;
data _NULL_
call symputx('mydate', put(&var., yymmdd8.), 'G');
run;
%put &mydate.
Currently mydate is empty.
Depending on your purpose, use the statement that you find best.
%let var = 20011015;
data _null_;
call symputx('mydate', input(put(&var., 8.), yymmdd8.), 'g');
call symputx('mydate2', put(&var., 8.), 'g');
run;
%put &=mydate.;
%put &=mydate2.;
Related
Very new to sas, need to perform export procedure for many datasets called data1, data2, data3 ... data10.
Is there a way to operationalize this? I've tried the following without success
LIBNAME input '/home/.../input';
LIBNAME output '/home/.../output';
%macro anynumber(number);
proc export data=input.data&number file="/home/.../output/data&number..dta" dbms=dta replace;
run;
%mend;
do i = 1 to 10;
%anynumber(i)
end;
run;
CALL EXECUTE is the recommended option but a macro loop is also a good option here.
You could loop it within the same macro as well. All options are illustrated below.
Usually when I see this type of coding though, my first thought is that someone isn't familiar with BY group processing.
data demo;
do i=1 to 10;
*make sure this string matches macro call;
str = catt('%anynumber(', i, ');');
*write records to log to check;
put str;
call execute(str);
end;
run;
Another option is a macro loop itself.
%macro loop_export(numLoops=10);
%do i=1 %to &numLoops;
%anywhere(&i);
%end;
%mend;
%loop_export(numLoops=10);
Putting them together:
%macro anynumber(number);
%do i=1 %to &number;
proc export data=input.data&number file="/home/.../output/data&i..dta" dbms=dta
replace;
run;
%end;
%mend;
*will export all 10;
%anyNumber(10);
below is my little problem to create a macro and passing in a date variable. Without using the date variable, it works with results as below.
%macro x();
%let i=-1;
%let dts = %sysfunc(today());
%put &dts; /*ok*/
%let yymm1 = %sysfunc(intnx(MONTH,&dts,&i));
%put &yymm1; /*ok*/
%let mth_beg = %sysfunc(intnx(MONTH,&dts,&i,B),date9.);
%let mth_end = %sysfunc(intnx(MONTH,&dts,&i,E),date9.);
%put &mth_beg &mth_end; /*01JAN2018 31JAN2018*/
/*** proc sql code below ** */
%mend;
%x();
log:
21231
21185
01JAN2018
31JAN2018
Now I create a macro around it and got the following error:
%macro x(dts1);
%let i=-1;
/*%let dts = %sysfunc(today());*/
%let dts = %sysfunc(&dts1);
%put &dts; /*ok*/
%let yymm1 = %sysfunc(intnx(MONTH,&dts,&i));
%put &yymm1; /*ok*/
%let mth_beg = %sysfunc(intnx(MONTH,&dts,&i,B),date9.);
%let mth_end = %sysfunc(intnx(MONTH,&dts,&i,E),date9.);
%put &mth_beg &mth_end; /*01JAN2018 31JAN2018*/
/*** proc sql code below ** */
%mend;
%x(16JAN2018);
ERROR: Function name missing in %SYSFUNC or %QSYSFUNC macro function reference.
JAN2018)
ERROR: Expected close parenthesis after macro function invocation not found.
))
ERROR: Expected close parenthesis after macro function invocation not found.
ERROR: Expected close parenthesis after macro function invocation not found.
,B),date9.) ,E),date9.)
I am not sure how to let SAS treat the date passed in as a recognized date. I know i probably used the sysfunc(&dts) wrongly or the date passed in need to adhere to certain format. i just want the date to replace today(). Can you help? I am a SAS newbie.
thanks
Wrap the date in " and end with a d. That will tell SAS to convert the string to a date:
%macro x(dts1);
%let i=-1;
/*%let dts = %sysfunc(today());*/
%let dts = "&dts1"d; /*Change here!*/
%put &dts; /*ok*/
%let yymm1 = %sysfunc(intnx(MONTH,&dts,&i));
%put &yymm1; /*ok*/
%let mth_beg = %sysfunc(intnx(MONTH,&dts,&i,B),date9.);
%let mth_end = %sysfunc(intnx(MONTH,&dts,&i,E),date9.);
%put &mth_beg &mth_end; /*01JAN2018 31JAN2018*/
/*** proc sql code below ** */
%mend;
%x(16JAN2018);
change %let dts = %sysfunc(&dts1); to
%let dts = %sysfunc(inputn(&dts1,date9. ));
SAS stores dates as the number of days since 01JAN1960. So if you do not attach a date format to the date value it will just look like an integer.
%let today=%sysfunc(today());
You can then use that integer anywhere you would use a date value.
%let next_month=%sysfunc(intnx(month,&today,1,b));
You can also represent dates by using a date literal. To make a date literal you represent the date value using something the DATE informat can read (like 16FEB2018, 16feb18, 16-FEB-2018, etc.) enclosed in quotes with the letter d appended.
%let today="%sysfunc(today(),date9)"d ;
%let date_string=13FEB2018;
%let date_value="&date_string"d ;
So date literals will work in SAS code and when you use the %sysfunc() macro function to call a SAS function (like INTNX) and they will work in the %sysevalf() macro function. But the %eval() macro function will not recognize date literals. So you will need to use %sysevalf() if you want use arithmetic or comparisons of date literals in macro logic.
%if %sysevalf(&today > '01JAN2018'd) %then ....
%let tomorrow=%sysevalf(&today +1);
I have a table like this:
Lista_ID 1 4 7 10 ...
in total there are 100 numbers.
I want to call each one of these numbers to a macro i created. I was trying to use 'scan' but read that it's just for character variables.
the error when i runned the following code was
there's the code:
proc sql;
select ID INTO: LISTA_ID SEPARATED BY '*' from
WORK.AMOSTRA;
run;
PROC SQL;
SELECT COUNT(*) INTO: NR SEPARATED BY '*' FROM
WORK.AMOSTRA;
RUN;
%MACRO CICLO_teste();
%LET LIM_MSISDN = %EVAL(NR);
%LET I = %EVAL(1);
%DO %WHILE (&I<= &LIM_MSISDN);
%LET REF = %SCAN(LISTA_ID,&I,,'*');
DATA WORK.UP&REF;
SET WORK.BASE&REF;
FORMAT PERC_ACUM 9.3;
IF FIRST.ID_CLIENTE THEN PERC_ACUM=0;
PERC_ACUM+PERC;
RUN;
%LET I = %EVAL(&I+1);
%END;
%MEND;
%CICLO_TESTE;
the error was that:
VARIABLE PERC IS UNITIALIZED and
VARIABLE FIRST.ID_CLIENTE IS UNITIALIZED.
What I want is to run this macro for each one of the Id's in the List I showed before, and that are referenced in work.base&ref and work.up&ref.
How can I do it? What I'm doing wrong?
thanks!
Here's the CALL EXECUTE version.
%MACRO CICLO_teste(REF);
DATA WORK.UP&REF;
SET WORK.BASE&REF;
BY ID_CLIENTE;
FORMAT PERC_ACUM 9.3;
IF FIRST.ID_CLIENTE THEN PERC_ACUM=0;
PERC_ACUM+PERC;
RUN;
%CICLO_TESTE;
DATA _NULL_;
SET amostra;
*CREATE YOUR MACRO CALL;
STR = CATT('%CLIO_TESTE(', ID, ')');
CALL EXECUTE(STR);
RUN;
First you should note that SAS macro variable resolve is intrinsically a "text-based" copy-paste action. That is, all the user-defined macro variables are texts. Therefore, %eval is unnecessary in this case.
Other miscellaneous corrections include:
Check the %scan() function for correct usage. The first argument should be a text string WITHOUT QUOTES.
run is redundant in proc sql since each sql statement is run as soon as they are sent. Use quit; to exit proc sql.
A semicolon is not required for macro call (causes unexpected problems sometimes).
use %do %to for loops
The code below should work.
data work.amostra;
input id;
cards;
1
4
7
10
;
run;
proc sql noprint;
select id into :lista_id separated by ' ' from work.amostra;
select count(*) into :nr separated by ' ' from work.amostra;
quit;
* check;
%put lista_id=&lista_id nr=&nr;
%macro ciclo_teste();
%local ref;
%do i = 1 %to &nr;
%let ref = %scan(&lista_id, &i);
%*check;
%put ref = &ref;
/* your task below */
/* data work.up&ref;*/
/* set work.base&ref;*/
/* format perc_acum 9.3;*/
/* if first.id_cliente then perc_acum=0;*/
/* perc_acum + perc;*/
/* run; */
%end;
%mend;
%ciclo_teste()
tested on SAS 9.4 win7 x64
Edited:
In fact I would recommend doing this to avoid scanning a long string which is inefficient.
%macro tester();
/* get the number of obs (a more efficient way) */
%local NN;
proc sql noprint;
select nobs into :NN
from dictionary.tables
where upcase(libname) = 'WORK'
and upcase(memname) = 'AMOSTRA';
quit;
/* assign &ref by random access */
%do i = 1 %to &NN;
data _null_;
a = &i;
set work.amostra point=a;
call symputx('ref',id,'L');
stop;
run;
%*check;
%put ref = &ref;
/* your task below */
%end;
%mend;
%tester()
Please let me know if you have further questions.
Wow that seems like a lot of work. Why not just do the following:
data work.amostra;
input id;
cards;
1
4
7
10
;
run;
%macro test001;
proc sql noprint;
select count(*) into: cnt
from amostra;
quit;
%let cnt = &cnt;
proc sql noprint;
select id into: x1 - :x&cnt
from amostra;
quit;
%do i = 1 %to &cnt;
%let x&i = &&x&i;
%put &&x&i;
%end;
%mend test001;
%test001;
now in variables &x1 - &&x&cnt you have your values and you can process them however you like.
In general if your list is small enough (macro variables are limited to 64K characters) then you are better off passing the list in a single delimited macro variable instead of multiple macro variables.Remember that PROC SQL will automatically set the count into the macro variable SQLOBS so there is no need to run the query twice. Or you can use %sysfunc(countw()) to count the number of entries in your delimited list.
proc sql noprint ;
select id into :idlist separated by '|' from .... ;
%let nr=&sqlobs;
quit;
...
%do i=1 %to &nr ;
%let id=%scan(&idlist,&i,|);
data up&id ;
...
%end;
If you do generate multiple macro variables there is no need to set the upper bound in advance as SAS will only create the number of macro variables it needs based on the number of observations returned by the query.
select id into :idval1 - from ... ;
%let nr=&sqlobs;
If you are using an older version of SAS the you need set an upper bound on the macro variable range.
select id into :idval1 - :idval99999 from ... ;
I have following dataset
data parm2;
input a b c d e;
datalines;
1 2 3 4 A
;
run;
Problem1: I would like have a set of macro variables. Assume i do not know the number of fields and its corresponding name of the field.
Problem2: fields are not same datatype.
desired operation is like following:
data _null_;
set parm2;
call symput('a',a);
call symput('b',b);
call symput('c',c);
call symput('d',d);
call symput('e',e);
run;
%put &a;
If this is the structure of your data, I would transpose:
proc transpose data=parm2 out=parmt;
var _all_;
run;
Then reference the two columns to create all the macro variables and their corresponding values:
data _null_;
set parmt;
call symput(_name_,col1);
run;
after some research i found the following solution. Although not a perfect one but worth to share. Looking forward #Reeze answer
data _null_;
set parm2;
array t(*) _numeric_; /*this deal with different data type*/
do i = 1 to dim(t);
call symput(vname(t[i]), t[i]);
end;
array t2(*) _character_;
do i = 1 to dim(t2);
call symput(vname(t2[i]), t2[i]);
end;
run;
Here's a Call VNEXT solution with VVALUEX, assuming you don't have a variable that has the same name as an automatic variable it seems to work. Derived solution from SAS Note: http://support.sas.com/kb/24/798.html
data parm2;
input a b c d e $;
datalines;
1 2 3 4 A
;
run;
data _null_;
set parm2;
length name $32;
*temporarily set name to not missing to start loop;
name='blank';
do while(name ne " ");
call vnext(name);
/* Omit automatic variables, and variables created in this step only */
if trim(name) not in('list','name','flag','i',' ','_ERROR_','_N_') then
call symput(name, vvaluex(name));
end;
run;
%put &a;
%put &b;
%put &c;
%put &d;
%put &e;
[ Edited - some codes or lines of code are marked with * as the OP does not require it ]
Use proc sql dictionary to get the variable name contained in your datase with the use of Memname and libname specification.
Use data step to obtained variables into marco variable. The name of variables are stored under the column name called name, and that's why we have to put it as call symputx( 'variable ' !! left(_n_), **name** );. The function of macro variable Total is to tell the number of variables existed in your data set.
Now you would have variable1= a , variable2= b....
%macro definevar ( library, dataset);
proc sql;
create table Attribute as
select * from dictionary.columns;
where memname = upcase( &dataset ) and libname = upcase(&library);
quit;
data letmacro;
set Attribute end=end;
call symputx( 'variable ' !! left(_n_), name );
* if end then call symputx ( Total, _n_);
run;
/*
***** extra ********
data _null_;
set &dataset ;
%do i=1 to &total;
call symputx ( "var&i" !! left(_n_), &&variable&i );
%end;
run;
***** extra ********
*/
%mend definevar;
%definevar( ifanylibrary, parm2)
And I am looking forward to learn CALL VNEXT solution by #Reeza
I want to use a Macro call in a data step. Below is the macro and its invocation in a data step but this isnt working. Can you guys please suggest a way to make it work.
%macro xscan(string, delimiter, word_number);
%let len1=%length(&string); /*Computing the length of the string*/
%let len=%eval(&len1+1);
%let sub=%scan(&string,&word_number,"&delimiter");
%if &word_number ge 0 %then %do;
%let pos=%index(&string,&sub); /* Locate the position while reading left to right*/
%end;
%if &word_number lt 0 %then %do;
data _null_;
pos=find("&string","&sub",-&len);
call symput("pos",pos);
run;
%end;
%let strg=%substr(&string,&pos); /* Extract the substring*/
%put the string is &strg;
%mend;
data work.in_data;
length in_string $50;
in_string = “a bb ccc dddd bb eeeee”;
output;
in_string = “aa b cc aa dee”;
output;
run;
data work.out_data;
set work.in_data;
length sub_str $50;
start_word_num = -(_n_ +1);
sub_str = %xscan(in_string,’ ‘, start_word_num);
run;
proc print; run;
If the macro is to be used inside a datastep, write it more simply using just datastep functions instead of making it complicated with macro functions. There are plenty of SAS string functions which will allow you to accomplish what it appears you want in far less code.
Data steps are very flexible and they allow you to manipulate your data in a very flexible day, I would recommend you trying to refactor the code to use only a datastep, however, if you still want to use it the way you have it right now use call execute .
Here is an example:
data _null_ ;
input name $ value !$ ;
call execute
( ‘%global ‘
llname~l ‘;’ II
‘%let’ Ilnamell =’ [1
value II ‘;’
);
cards ;
abc xyz
;
Refer to these docs for further reading :
http://www2.sas.com/proceedings/sugi30/154-30.pdf and
http://www2.sas.com/proceedings/sugi22/CODERS/PAPER70.PDF