I would like to set a dataset by using a reference to dataset name however Iam getting error message: ERROR: File dataset_name123 does not exist(work.dataset123 does exist) What is wrong?
data _null_;
%let product = 'dataset_name123';
set work.&product nobs = row_no;
put row_no;
put &product;
run;
Member names are not quoted. Remove the quotes from your macro variable. In macro code everything is character so there is no need to add quotes around string literals. The quotes become part of the value of the macro variable.
%let product = dataset_name123;
%put &=product;
data _null_;
set work.&product nobs = row_no;
put row_no;
put "&product";
stop;
run;
If you do include quotes in a dataset reference then SAS will interpret it as the physical name of the dataset file itself. So code like:
data want;
set 'dataset_name123';
run;
would look for a filename 'dataset_name123.sas7bdat' in the current working directory.
It is not a great idea to do a %let statement in a data step. Macrovariables and SAS variables are created differently.
There are two problems in this code. First one is quotes around macrovariable, which after resolution will be used for table name and hence your query fails as table names cannot be in quotes .
second one is put statement for macro variable for macro variable to resolve you need %put.
below is modified code.
data class;
set sashelp.class;
run;
data _null_;
%let product = class;
set work.&product nobs = row_no;
put row_no;
%put &product;
run;
Related
A novice in SAS here. I am trying to rename variables in a data set by using the new values I have in a list. Since I have multiple files with over 100 variables that need to be renamed, I created the following macro and I am trying to pass the list with the new names. However, I am not sure how to pass the list of variables and loop through it properly in the macro. Right now I am getting an error in the %do loop that says: "ERROR: The %TO value of the %DO I loop is invalid."
Any guidance will be greatly appreciated.
The list of new variables comes from another macro and it is saved in &newvars.
The number of variables in the files are the same number in the list, and the order they should be replaced is the same.
%macro rename(lib,dsn,newname);
proc sql noprint;
select nvar into :num_vars from dictionary.tables
where libname="&LIB" and memname="&DSN";
select distinct(nliteral(name)) into:vars
from dictionary.columns
where libname="&LIB" and memname="&DSN";
quit;
run;
proc datasets library = &LIB;
modify &DSN;
rename
%do i = 1 %to &num_vars.;
&&vars&i == &&newname&i.
%end;
;
quit;
run;
%mend rename;
%rename(pga3,selRound,&newvars);
Thank you in advance.
You are getting that error message because the macro variable NUM_VARS is not being set because no observations met your first where condition.
The LIBNAME and MEMNAME fields in the metadata tables are always uppercase and you called the macro with lowercase names.
You can use the %upcase() macro function to fix that. While you are at it you can eliminate the first query as SQL will count the number of variables for you in the second query. Also if you want that query to generate multiple macro variables with numeric suffixes you need to modify the into clause to say that. The DISTINCT keyword is not needed as a dataset cannot have two variables with the same name.
select nliteral(name)
into :vars1 -
from dictionary.columns
where libname=%upcase("&LIB") and memname=%upcase("&DSN")
;
%let num_vars=&sqlobs;
You also should tell it what order to generate the names. Were the new names generated in expectation that the list would be in the order the variables exist in the dataset? If so use the VARNUM variable in the ORDER BY clause. If in alphabetical order then use NAME in the ORDER BY clause.
How are you passing in the new names?
Is it a space delimited list? If so your final step should look more like this:
proc datasets library = &LIB;
modify &DSN;
rename
%do i = 1 %to &num_vars.;
&&vars&i = %scan(&newname,&i,%str( ))
%end;
;
run; quit;
If NEWNAME has the base name to use for a series of variable names with numeric suffixes then you would want this:
&&vars&i = &newname&i
If instead you are passing into NEWNAME a base string to use to locate a series of macro variables with numeric suffixes then the syntax would be more like this.
&&vars&i = &&&newname&i
So if NEWNAME=XXX and I=1 then on the first pass of the macro processor that line will transform into
&vars1 = &XXX1
And on the second pass the values of VARS1 and XXX1 would be substituted.
I'm trying to create a custom transformation within SAS DI Studio to do some complicated processing which I will want to reuse often. In order to achieve this, as a first step, I am trying to replicate the functionality of a simple APPEND transformation.
To this end, I've enabled multiple inputs (max of 10) and am trying to leverage the &_INPUTn and &_INPUT_count macro variables referenced here. I would like to simply use the code
data work.APPEND_DATA / view=work.APPEND_DATA;
%let max_input_index = %sysevalf(&_INPUT_count - 1,int);
set &_INPUT0 - &&_INPUT&max_input_index;
keep col1 col2 col3;
run;
However, I receive the following error:
ERROR: Missing numeric suffix on a numbered data set list (WORK.SOME_INPUT_TABLE-WORK.ANOTHER_INPUT_TABLE)
because the macro variables are resolved to the names of the datasets they refer to, whose names do not conform to the format required for the
SET dataset1 - dataset9;
statement. How can I get around this?
Much gratitude.
You need to create a macro that loops through your list and resolves the variables. Something like
%macro list_tables(n);
%do i=1 %to &n;
&&_INPUT&i
%end;
%mend;
data work.APPEND_DATA / view=work.APPEND_DATA;
%let max_input_index = %sysevalf(&_INPUT_count - 1,int);
set %list_tables(&max_input_index);
keep col1 col2 col3;
run;
The SET statement will need a list of the actual dataset names since they might not form a sequence of numeric suffixed names.
You could use a macro %DO loop if are already running a macro. Make sure to not generate any semi-colons inside the %DO loop.
set
%do i=1 %to &_inputcount ; &&_input&i %end;
;
But you could also use a data step to concatenate the names into a single macro variable that you could then use in the SET statement.
data _null_;
call symputx('_input1',symget('_input'));
length str $500 ;
do i=1 to &_inputcount;
str=catx(' ',str,symget(cats('_input',i)));
end;
call symputx('_input',str);
run;
data .... ;
set &_input ;
...
The extra CALL SYMPUTX() at the top of the data step will handle the case when count is one and SAS only creates the _INPUT macro variable instead of creating the series of macro variables with the numeric suffix. This will set _INPUT1 to the value of _INPUT so that the DO loop will still function.
How do I call a macro variable in the from clause of proc sql if I wish to use it in a libname?
Let me show you what I mean:
options nofmterr;
libname FRST "/ecm/retail/mortgage/nbk6kra/LGD/data/frst_201312bkts";
libname HELN "/ecm/retail/mortgage/nbk6kra/LGD/data/heln_201312bkts";
libname HELC "/ecm/retail/mortgage/nbk6kra/LGD/data/helc_201312bkts";
%let pathLGD = /new/mortgage/2014Q4/LGD;
%let prod = FRST;
/**************** Segment calculation **************** Date filter to be consistent with model documentation for segmented tables****************/
%macro Performance(prod);
proc sql;
create table lgd_seg_&prod as
select distinct
SegDT_LGD_2013,
min(ScoreDT_LGD_2013) as min_range,
max(ScoreDT_LGD_2013) as max_range,
count(*) as count,
mean(lgd_ncl_adjusted) as LGD_actual,
mean(ScorePIT_LGD_2013) as LGD_pred_pit_1,
mean(ScoreDT_LGD_2013) as LGD_pred_dt_1
from "&prod."scored;
where coh_asof_yyyymm > 200612
group by 1;
quit;
PROC EXPORT DATA=lgd_seg_&prod._fs
OUTFILE= "&pathLGD./lgd_seg.xlsx"
DBMS=XLSX REPLACE;
SHEET="&prod._lgd_seg_fs";
RUN;
%mend;
%Performance(prod=FRST);
%Performance(prod=HELN);
%Performance(prod=HELC);
So in the "from" clause, the macro is supposed to read FRST.scored, HELN.scored, and HELC.scored respectively. Currently it cannot find the file, and if I were to remove the quotation marks, then it'd become "work.FRSTscored".
I hope I've made this clear. Any input and comment is appreciated.
When you want to follow the the resolved value of a macro variable with an immediate additional character you should escape the macro variable with a full stop (.). For example:
%let start = one;
%put &start.two;
%put &start..two;
%put &startend;
onetwo
one.two
WARNING: Apparent symbolic reference STARTEND not resolved.
So your code should read from &prod..scored;.
If you ever need to you can also delay the resolution of a macro variable with double ampersand (&&):
%let end = two;
%let onetwo = three;
%put &&one&end;
%put &&&start&end;
Three
Three
Or:
%let three = inception;
%put &&&&&&&start&end;
inception
Remove quotation marks applied outside the macro variable prod and use two dots after macro variable (one to signify end of macro variable name and second one to specify the table name after the libname reference.
from &prod..scored
I have written a macro that accepts a list of variables, runs a proc mixed model using each variable as a predictor, and then exports the results to a dataset with the variable name appended to it. I am trying to figure out how to stack the results from all of the variables in a single data set.
Here is the macro:
%macro cogTraj(cog,varlist);
%let j = 1;
%let var = %scan(&varlist, %eval(&j));
%let solution = sol;
%let outsol = &solution.&var.;
%do %while (&var ne );
proc mixed data = datuse;
model &cog = &var &var*year /solution cl;
random int year/subject = id;
ods output SolutionF = &outsol;
run;
%let j = %eval(&j + 1);
%let var = %scan(&varlist, %eval(&j));
%let outsol = &solution.&var.;
%end;
%mend;
/* Example */
%cogTraj(mmmscore, varlist = bio1 bio2 bio3);
The result would be the creation of Solbio1, Solbio2, and Solbio3.
I have created a macro variable containing the "varlist" (Ideally, I'd like to input a macro variable list as the argument but I haven't figured out how to deal with the scoping):
%let biolist = bio1 bio2 bio3;
I want to stack Solbio1, Solbio2, and Solbio3 by using text manipulation to add "Sol" to the beginning of each variable. I tried the following, outside of any data step or macro:
%let biolistsol = %add_string( &biolist, Sol, location = prefix);
without success.
Ultimately, I want to do something like this;
data Solbio_stack;
set %biolistsol;
run;
with the result being a single dataset in which Solbio1, Solbio2, and Solbio3 are stacked, but I'm sure I don't have the right syntax.
Can anyone help me with the text string/dataset stacking issue? I would be extra happy if I could figure out how to change the macro to accept %biolist as the argument, rather than writing out the list variables as an argument for the macro.
I would approach this differently. A good approach for the problem is to drive it with a dataset; that's what SAS is good at, really, and it's very easy.
First, construct a dataset that has a row for each variable you're running this on, and a variable name that contains the variable name (one per row). You might be able to construct this using PROC CONTENTS or sashelp.vtable or dictionary.tables, if you're using a set of variables from one particular dataset. It can also come from a spreadsheet you import, or a text file, or anything else really - or just written as datalines, as below.
So your example would have this dataset:
data vars_run;
input name $ cog $;
datalines;
bio1 mmmscore
bio2 mmmscore
bio3 mmmscore
;;;;
run;
If your 'cog' is fairly consistent you don't need to put it in the data, if it is something that might change you might also have a variable for it in the data. I do in the above example include it.
Then, you write the macro so it does one pass on the PROC MIXED - ie, the inner part of the %do loop.
%macro cogTraj(cog=,var=, sol=sol);
proc mixed data = datuse;
model &cog = &var &var*year /solution cl;
random int year/subject = id;
ods output SolutionF = &sol.&var.;
run;
%mend cogTraj;
I put the default for &sol in there. Now, you generate one call to the macro from each row in your dataset. You also generate a list of the sol sets.
proc sql;
select cats('%cogTraj(cog=',cog,',var=',name,',sol=sol)')
into :callList
sepearated by ' '
from have;
select cats('sol',name') into :solList separated by ' '
from have;
quit;
Next, you run the macro:
&callList.
And then you can do this:
data sol_all;
set &solList.;
run;
All done, and a lot less macro variable parsing which is messy and annoying.
I have a libname that varies from year to year and I wanted to make a program that automatically adjusts for this. But in order for everything to work I have to have invoke a macro inside of the quoted string in a libname statement. How do I do this?
%macro srvyr;
data work.whatever;
length srvyr $4.;
srvyr = (left(year(date()))-1);
srvyr2 = "'C:\Documents and Settings\user\Desktop\sas\d"||srvyr||"a1'";
run;
%mend;
%srvyr;
/*Everything above sets configures the pathname the way I need it*/
I want to then run this:
libname stuff &srvyr;run;
as if it were
libname stuff 'C:\Documents and Settings\user\Desktop\sas\d2010a1';
run;
How do I do this right?
Does is always have to be the previous year, or do you want to base it on a value in a dataset. You don't need macro to solve this.
The shortest method to get last year is as follows
libname stuff "C:\Documents and Settings\user\Desktop\sas\d%eval(%sysfunc(year(%sysfunc(date())))-1)a1";
and if you want to break it up to make it more readable it could be like this
%let lastyear = %eval(%sysfunc(year(%sysfunc(date())))-1);
%let libpath = C:\Documents and Settings\user\Desktop\sas\d&lastyear.a1;
libname stuff "&libpath";
call symput is your friend. Put the following inside the data step, after creating the variable srvyr2:
call symput('srvyr_path', srvyr2);
and then outside the macro,
libname stuff &srvyr_path;