I have an example like this:
proc sql;
select dealno into :deal_no
from deal_table;
Now I want to traverse the variable deal_no now containing all dealno in table deal_table but I don't know how to do it.
Another option is add 'separated by' to the sql code, which will add a delimiter to the values. You can then use the SCAN function in a data step or %SCAN in a macro to loop through the values and perform whatever task you want. Example below.
proc sql noprint;
select age into :age separated by ','
from sashelp.class;
quit;
%put &age.;
data test;
do i=1 by 1 while(scan("&age.",i) ne '');
age=scan("&age.",i);
output;
end;
drop i;
run;
If you do
%put &deal_no;
you can see that it only contains the first value of dealno, not all of them.
To avoid that you can do something like this:
proc sql;
create table counter as select dealno from deal_table;
select dealno into :deal_no_1 - :deal_no_&sqlobs
from deal_table;
quit;
%let N = &sqlobs;
%macro loop;
%do i = 1 %to &N;
%put &&deal_no_&i;
%end;
%mend;
%loop; run;
Here's another solution.
proc sql noprint;
select age into :ageVals separated by ' '
from ageData;
quit;
%put &ageVals;
%macro loopAgeVals; %let i = 1; %let ageVal = %scan(&ageVals, &i);
%do %while("&ageVal" ~= "");
%put &ageVal;
%let i = %eval(&i + 1);
%let ageVal = %scan(&ageVals, &i);
%end;
%mend;
%loopAgeVals;
Related
I was trying to create a macro to output a list of all variables of a specific data set. In my macro, I am using PROC SQL. The code runs OK outside %macro, but error message saying the SELECT statement is not valid when it is being used within %MACRO
here is an example:
proc sql noprint;
select name into :vlist separated by ' '
from dictionary.columns
where memname = upcase("&dsn");
quit;
%put &vlist;
the above works perfectly;
but
%macro getvars(dsn);
%local vlist;
proc sql noprint;
select name into :vlist separated by ' '
from dictionary.columns
where memname = upcase("&dsn");
quit;
&vlist;
%mend;
the above doesn't work when I tried to do:
%let var_list = %getvars(dataset);
it returns:
ERROR 180-322: Statement is not valid or it is used out of proper order.
underlining the SELECT statement within the PROC SQL
SAS macros are not like functions in most programming languages: they don't return values, they are actually replaced by the content of the macro.
The solution is to make your macro variable global, outside the macro. Then you don't need to assign it to a new macro variable with %let.
%global vlist;
%macro getvars(dsn);
proc sql noprint;
select name into :vlist separated by ' '
from dictionary.columns
where memname = upcase("&dsn");
quit;
%mend;
%getvars(work.class)
%put &=vlist;
[EDIT]
and then just use the list in your keep statement
data OUT (keep= &vlist. VAR_B1);
merge DATA_A (in=a) DATA_B (in=b) ;
run;
Seems like the only viable option for my use case is from the following SAS paper, under the section of "USING A MACRO LOOP"
https://support.sas.com/resources/papers/proceedings/proceedings/sugi30/028-30.pdf
To clarify, my use case need a direct output of the list itself, not a macro variable.
e.g.
data OUT (keep= %getvars(DATA_A) VAR_B1);
merge DATA_A (in=a)
DATA_B (in=b)
;
run;
The PROC SQL won't work for me. So I think I need to move over to SAS I/O Functions in Macro Loop.
Below is from the SAS Paper:
%Macro GetVars(Dset) ;
%Local VarList ;
/* open dataset */
%Let FID = %SysFunc(Open(&Dset)) ;
/* If accessable, process contents of dataset */
%If &FID %Then %Do ;
%Do I=1 %To %SysFunc(ATTRN(&FID,NVARS)) ;
%Let VarList= &VarList %SysFunc(VarName(&FID,&I));
%End ;
/* close dataset when complete */
%Let FID = %SysFunc(Close(&FID)) ;
%End ;
&VarList
%Mend ;
A macro using %SYSFUNC(DOSUBL( can run any amount of SAS code (in a separate stream) when invoked at source code parse-time.
Example:
data have_A;
do index = 1 to 10;
x = index ** 2; y = x-1; z = x+1; p = x/2; q = sqrt(x); output;
end;
run;
data have_B(keep=B1);
do index = 1 to 10;
B1 + index; output;
end;
run;
%macro getvars(data);
%local rc lib mem names;
%let rc = %sysfunc(DOSUBL(%nrstr(
%let syslast = &data;
%let lib = %scan (&SYSLAST,1,.);
%let mem = %scan (&SYSLAST,2,.);
proc sql noprint;
select name into :names separated by ' ' from
dictionary.columns where
libname = "&lib." and
memname = "&mem."
;
quit;
)));
/* Emit variable name list */
&names.
%mend;
data OUT (keep=%getvars(HAVE_A) B1);
merge HAVE_A (in=a) /* 1:1 merge (no BY) */
HAVE_B (in=b)
;
run;
%let var_list = %getvars(dataset);
will resolve to:
%let var_list = proc sql noprint;
select name into :vlist separated by ' '
from dictionary.columns
where memname = upcase("dataset");
quit;
So it will store "proc SQL noprint" in var_list, and then fail because you use sql satements outside of proc sql.
%let abc = ("234.34", "C56.67", "2345.67", "C67.56") ;
Output:
Table1
Col1
234.34
C56.67
2345.67
C67.56
This is throwing an error, can somebody please guide me:
%macro generate ;
%local i ;
data table1;
length Col1 $100.;
%do i=1 %to %sysfunc(countw(&abc.));
Col1 = %scan(&abc., &i.,,"sq");
output;
%end;
run;
%mend;
%generate;
you do not need a macro and one way to do this.
%let abc = ("234.34", "C56.67", "2345.67", "C67.56" );
%let abc = %qsysfunc(compress(&abc,%str(%"%)%()));
data table1;
length Col1 $100.;
do i = 1 to countw("&abc", ",");
Col1 = scan("&abc", i,',');
output;
end;
run;
You can do this with a DO loop, but you will need to remove the () from the value of the macro variable.
%let abc = ("234.34", "C56.67", "2345.67", "C67.56") ;
data table1;
length Col1 $100.;
do Col1 = %substr(&abc,2,%length(&abc)-2);
output;
end;
run;
If the values do not contain () then you could also just use %scan(&abc,1,()), which also has the advantage of working whether or not the original value has the enclosing ().
Or just remove the () from the value and add them back when you use the macro variable in place where they are needed.
%let abc = "234.34", "C56.67", "2345.67", "C67.56" ;
...
do Col1 = &abc ;
...
where dxcode in (&abc)
....
A proc sql way
%let abc = ("234.34", "C56.67", "2345.67", "C67.56") ;
proc sql;
create table tab1 (col1 varchar(100));
quit;
options macrogen mlogic;
%macro gen;
%let i = 1;
%do %while (%scan(%superq(abc),&i,%str(,)) ne %str( ));
proc sql;
insert into tab1
values(%scan(%superq(abc),&i,%str(,)));
quit;
%let i = %sysevalf(&i + 1);
%end;
%mend gen; %gen;
It would scan through your macro that is delimited by ",", and progress by 1 with each loop.
I am trying to summarize my variables using proc sql and proc freq procedures in a macro.
Here is the code:
%macro des_freq(input= ,vars= );
%let n=%sysfunc(countw(&vars));
%let binary=NO;
%do i = 1 %to &n;
%let values = %scan(&vars, &i);
%if %datatyp(&values)=NUMERIC %then %do;
proc summary data = &input;
output out=x min(&values)=minx max(&values)=maxx;
run;
data _null_;
set x;
if minx = 0 and maxx = 1 then call symputx('binary','YES');
run;
%if &binary = YES %then %do;
proc sql;
select segment_final,
(sum(case when &values = 1 then 1 else 0 end)/ count(*)) * 100 as &values._percent
from &input
group by segment_final;
quit;
%end;
%else %do;
proc freq data =&input;
tables segment_final*&values/nofreq nopercent nocol;
run;
%end;
%end;
%else %do;
proc freq data =&input;
tables segment_final*&values/nofreq nopercent nocol;
run;
%end;
%end;
%mend;
My variables can be numeric or character. If it's numeric, it can 2 more distinct values.
I want % of 1's in a binary variable by segments(hence proc sql) and % of all distinct variables for each segment(hence proc freq).
My first if statement is checking whether the variable if numeric or not and then if its numeric, next few steps is checking if its binary or not. If its binary then execute the proc sql else execute proc freq.
If the variable is character then just execute the proc freq.
I am not able to figure out how to check if my variable is numeric or not. I tried %SYSFUNC(Vartype), %isnum and %DATATYP. None of them seem to work. Please help!!
First you can look into sashelp.vcolumn table to check variables types:
data want(keep=libname memname name type);
set sashelp.vcolumn( where= (libname='SASHELP' and memname='CLASS'));
run;
If you don't want to use vcolumn table, you can use vtype() data step function as #Tom suggest:
data _NULL_;
set &input (obs=1);
call symput('binary',ifc(vtype(&values)='N','YES','NO' ));
run;
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 want to store the count distinct of each variable from a table in another. I wanted to use a loop for it, over the list of the variables. So first, I stored the variables names in "vars", doing this:
proc sql ;
select name
into :vars separated by ' '
from dictionary.columns
where libname eq 'HW' and
memname eq "ORDERS";
quit;
Then, I created another list with the result of the count distinct with the following code:
%macro g();
%let b=;
%do i = 1 %to 3;
%let a=%scan(&vars,&i);
proc sql;
select count(distinct &a)
into :gaby from hw.ORDERS;
quit;
%let b=&b &gaby;
%end;
%put &b;
%mend g;
%g();
After this, I wanted to add both to a table, but I can add the vars variable but not the b variable.
data a;
call symput('lista', symget('vars'));
call symput('lista1', symget('b'));
do i=1 to 3;
timept=i;
variable=scan("&vars",i);
dist=scan("&b",i);
output;
end;
run;
The table shows correctly the name of the variables but instead of showing the count distinct (that were stored in b) shows the letter "b".
Is there a way to perform this? also, is there a way to perform it easily?
Thanks!!!!!!!!!!
You're pretty close. I would just use a single SQL pass and create an output table directly. If you want it in a column form, then use PROC TRANSPOSE.
proc sql noprint;
select name
into :vars separated by ' '
from dictionary.columns
where libname eq 'SASHELP' and
memname eq "SHOES";
quit;
%put &vars;
%macro create_table();
proc sql noprint;
%local i n var;
%let n = %sysfunc(countw(&vars));
create table output as
select
%do i=1 %to %eval(&n-1);
%let var = %scan(&vars,&i);
count(distinct &var) as &var,
%end;
%let var = %scan(&vars,&n);
count(distinct &var) as &var
from sashelp.shoes;
quit;
%mend;
%create_table;
proc transpose data=output out=want(rename=(_NAME_=variable COL1=Dist));
run;