I want to create a SAS macro which takes a literal date (eg. '31may2011'd) as parameter. Inside the macro I want to transform this into a SAS date value (eg. 18778).
%macro transLiteralDate2Value(literal=);
%put literal = &literal.;
%put sasdatavalue = ???; /* how to calculate this value ? */
%mend;
%transLiteralDate2Value(literal='31may2011'd);
Is the are elegant way to achieve this? Of course I could do this by parsing the literal string, but I think there must be a better way.
I use SAS 9.1.3
This will work inside or outside of a macro. Don't forget %sysfunc() has a handy optional second parameter which will let you format the output value.
%let report_date = %sysfunc(sum('01JAN2011'd),best.);
or
%let report_date = %sysfunc(putn('01JAN2011'd,best.));
Cheers
Rob
You can do it using the %sysfunc macro function.
%macro transLiteralDate2Value(literal=);
%put literal = &literal.;
%put sasdatavalue = %sysfunc(putn(&literal.,8.));
%mend;
%transLiteralDate2Value(literal='31may2011'd);
It is handy to have a pair of simple conversion macros like mine below. See also my sas-l posting.
%macro date2num(date, informat=anydtdte.);
%*-- strip quotations and postfix d from date literal if any. --*;
%*-- quotations are intentionally doubled to prevent unmatched error --*;
%let date=%sysfunc(prxchange(s/[''""]d?//i,-1,&date));
%sysfunc(inputn(&date,&informat))
%mend date2num;
%macro num2date(num, format=date10., literal=1);
%local n;
%let n = %sysfunc(putn(&num,&format));
%if &literal %then "&n"d; %else &n;
%mend num2date;
Related
I have a libY.tableX that have for each record some SQL strings like the ones below and other fields to write the result of their execution.
select count(*) from libZ.tableK
select sum(fieldV) from libZ.tableK
select min(dsitact) from libZ.tableK
This my steps:
the user is prompted to select a lib and table and the value is passed to the vars &sel_livraria and &sel_tabela;
My 1st block is a proc sql to get all the sql string from that record.
My 2nd block is trying to concrenate all that strings to use further on to update my table with the results. The macro %isBlank is the one recommended by Chang CHung and John King in their sas papper;
My 3th block is to execute that concrenated sql string and update the table with results.
%macro exec_strings;
proc sql noprint ;
select livraria, tabela, sql_tot_linhas, sql_sum_num, sql_min_data, sql_max_data
into :livraria, :tabela, :sql_tot_linhas, :sql_sum_num, :sql_min_data, :sql_max_data
from libY.tableX
where livraria='&sel_livraria'
and tabela='&sel_tabela';
quit;
%LET mystring1 =%str(tot_linhas=(&sql_tot_linhas));
%LET separador =%str(,);
%if %isBlank(&sql_sum_num) %then %LET mystring2=&mystring1;
%else %LET mystring2= %sysfunc(catx(&separador,&mystring1,%str(sum_num=(&sql_tot_linhas))));
%if %isBlank(&sql_min_data) %then %LET mystring3=&mystring2 ;
%else %LET mystring3= %sysfunc(catx(&separador,&mystring2,%str(min_data=(&sql_min_data))));
%if %isBlank(&sql_max_data) %then %LET mystring0=&mystring3;
%else %LET mystring0= %sysfunc(catx(&separador,&mystring3,%str(max_data=(&sql_min_data))));
%PUT &mystring0;
proc sql noprint;
update libY.tableX
set &mystring0
where livraria='&sel_livraria'
and tabela='&sel_tabela';
quit;
%mend;
My problem with the code above is that iam getting this error in my final concrenated string, &mystring0.
tot_linhas=(&sql_tot_linhas),sum_num=(&sql_tot_linhas),min_data=(&sql_min_data),max_data=(&sql_min_data)
_ _ _ _
ERROR 22-322: Syntax error, expecting one of the following: a name, a quoted string, a numeric constant, a datetime constant, a missing value, BTRIM, INPUT, PUT, SUBSTRING, USER.
Any help appreciated
Ok, so i follow Tom comments and ended with a proc sql solution that works!
proc sql;
select sql_tot_linhas,
(case when sql_sum_num = '' then "0" else sql_sum_num end),
(case when sql_min_data = '' then "." else sql_min_data end),
(case when sql_max_data = '' then "." else sql_max_data end)
into:sql_linhas, :sql_numeros, :sql_mindata, :sql_mxdata
from libY.tableX
where livraria="&sel_livraria"
and tabela="&sel_tabela";
quit;
proc sql;
update libY.tableX
set tot_linhas = (&sql_linhas),
sum_num =(&sql_numeros),
min_data = (&sql_mindata),
max_data = (&sql_mxdata)
where livraria="&sel_livraria"
and tabela="&sel_tabela";
quit;
Tks Tom :)
It is very hard to tell from your description what it is you are trying to do, but there are some clear coding issues in the snippets of code you did share.
First is that macro expressions are not evaluated in string literals bounded by single quotes. You must use double quotes.
where livraria="&sel_livraria"
Second is you do not want to use any of the CAT...() SAS functions in macro code. Mainly because you don't need them. If you want to concatenate values in macro code just type them next to each other. But also because they do not work well with %SYSFUNC() because they allow their arguments to be either numeric or character so %SYSFUNC() will have to guess from the strings you pass it whether it should tell the SAS function those strings are numeric or character values.
So perhaps something like:
%let mystring=tot_linhas=(&sql_tot_linhas);
%if not %isBlank(&sql_sum_num) %then
%LET mystring=&mystring,sum_num=(&sql_tot_linhas)
;
%if not %isBlank(&sql_min_data) %then
%LET mystring=&mystring,min_data=(&sql_min_data)
;
%if not %isBlank(&sql_max_data) %then
%LET mystring=&mystring,max_data=(&sql_max_data)
;
Note that I also cleaned up some obvious errors when modifying that code. Like the extra & in the value passed to the %ISBLANK() macro and the assignment of the min value to the max variable.
But it would probably be easier to generate the strings in a data step where you can test the values of the actual variables and if needed actually use the CATX() function.
so I have a code like below
%let THIS_YEAR=2020;
%macro programall;
%do i = 2016 %to &THIS_YEAR;
%let num2 =%eval(&i-2000);
%let xxx= CAT("MP",&num2);
data t_&i.;
set table1;
where GROUP in ("&xxx");
run;
%end;
for example
when i=2016
num2 = 2016-2000;
num2 = 16;
and try to concatenate with "MP", so it should create xxx=MP16.
and try to use in where statement.
but it is causing error.
how can I create Macro Variable like "MP16"correctly, so I can use it in where clause?
Thanks
You cannot use functions in macro code, they are just treated as any other text to the macro processor. But there is no need to use a function to concatenate text in macro code. Just expand the macro variable where you want to use the text it contains.
%let xxx= MP&num2 ;
Macro variables are just text (not strings, text as in the thing you type in). So to concatenate macro variables, just put them next to each other.
%let var1=Banana;
%let var2=Pepper;
%let var3=&var1. &var2.;
%put &=var3;
You don't actually have to use the third variable of course, you could just use "&var1. &var2." or whatever in your code directly.
Try
%let THIS_YEAR=2020;
%macro programall;
%local year;
%do year = 2016 %to &THIS_YEAR;
data t_&year.;
set table1;
where GROUP in ("MP%eval(&year-2000)");
run;
%end;
%mend;
options mprint;
%programall
I'm using SYSPBUFF to pass through various numbers of parameters into a macro. Specifically, I am passing through a list of states. One of the states being used is Oregon or "OR" and that one state is causing me error.
I get the error "ERROR: A character operand was found in the %EVAL function or %IF condition where a numeric operand is required. The condition was: &ST^=
ERROR: The condition in the %DO %WHILE loop, &ST^=, yielded an invalid or missing value, . The macro will stop executing.
I've used all the various quoting masks to try to resolve this issue but none of it is working.
&STATES includes the following states:
AK,AZ,CA,HI,ID,NV,OR,WA
Here is my current code:
RSUBMIT;
PROC SQL;
connect to oracle
(path=DW user=&USER pw=&PW);
%macro DTCNT() / parmbuff;
%let i=1;
%let ST=%scan(&SYSPBUFF,&I);
%do %while (&ST^=);
CREATE TABLE MD_&ST._IP_ADJDT_CNTS_S1 AS
select *
from connection to oracle
(SELECT adjudication_date,
count (*) as LINE_CNT
from MD_r&NUM..&ST._IP_hdr_f
group by adjudication_date
order by adjudication_date);
%let i=%eval(&I+1);
%let ST=%scan(&SYSPBUFF,&I);
%end;
%mend DTCNT;
%DTCNT(&STATES);
disconnect from oracle;
QUIT;
ENDRSUBMIT;
Any assistance would be greatly appreciated.
Thanks in advance.
The issue here is Oregon. Its abbreviation is OR, which is also a reserved word (oops!). Remember the macro language is just text that is then parsed like normal - so when it finds &ST and translates to OR, it sees that as
%do %while (or ^= )
which causes it to get confused since it doesn't see anything to use with or.
You can use macro quoting here to cause SAS not to treat it like the boolean operator. %SUPERQ is the goto one for me, but a few of them should work.
Here's an example. I added some extra stuff to scan also to handle the parens.
%let states=AK,AZ,CA,HI,ID,NV,OR,WA;
%macro DTCNT() / parmbuff;
%let i=1;
%put &=syspbuff.;
%let ST=%scan(&SYSPBUFF,&I,%str(%(%),));
%put &=st.;
%do %while (%superq(ST)^=);
%put &=st;
%let i=%eval(&i.+1);
%let ST=%scan(&SYSPBUFF,&I,%str(%(%),));
%end;
%mend DTCNT;
%DTCNT(&STATES);
There is a great paper on how to test for empty macro variables, Chang Chung's Is This Macro Parameter Blank.
For your simple program I find it much easier to just use %length() to test for empty macro variables.
%do %while (%length(&ST));
Consider the following text value '1/3/2016' from a dataset. This is a badly formatted date value that i cannot correct using ANYDTDTE. as I am on SAS 9.0. In this string the day and month are also the wrong way round. This is actually 03JAN2016 in date9. format
Therefore I have attempted to correct all of the above with the following macro:
%macro date_cats();
proc sql noprint;
select scan(matchdate,1,'/'), scan(matchdate,2,'/'), strip(scan(matchdate,3,'/')) into :month, :day, :year
from test;
quit;
%let padder = 0;
%if %length(&month) < 2 %then
%let month = %sysfunc(cats(&padder., &month.));
%put &month.;
%if %length(&day) < 2 %then
%let day = %sysfunc(cats(&padder., &day.));
%put &day.;
%put %sysfunc(cats(&day., &month., &year.));
%mend;
%date_cats();
The three %put statements produce the following in the log:
01
03
132016
Can anyone tell me in the final put statement why the final CATS statement is either dropping the added '0' character or reverting back to the macro variables being joined before they were padded out?
Thanks
Don't use CATS() to generate macro variables.
First it is totally unneeded since you can concatenate macro variable values by just expanding their values next to each other. Replace
%let month = %sysfunc(cats(&padder., &month.));
with
%let month = &padder.&month.;
Second when trying to evaluate the arguments to functions like CATS() that can take either numeric or character values %SYSFUNC() will attempt to evaluate your strings to see if they are numbers. In your case they are numbers so the leading zeros disappear. In other cases you can cause SAS to generate warning messages.
Third, if you really want to convert a string like 'M/D/Y' into a string like 'DMY' then assuming the string contains valid dates then just use formats to do the conversion.
%let have=1/20/2015 ;
%let want=%sysfunc(inputn(&have,mmddyy10),ddmmyyn8);
CATS is seeing numbers and automatically converting them, unhelpfully.
Generally for macro vars you can use the following
%put &day.&month.&year.;
I have defined macro variable
%let data_names = fuzzy_Data_segment EMWS2.Clus_TRAIN;
Then I have written a macro to extract and print the values from the above macro variable as:
%macro calling_data;
%do i = 1 %to 2;
%let data_name&i = %qscan(&data_names,&i);
%put &&data_name&i;
%end;
%mend;
%calling_data;
My macro code is able print the first name(fuzzy_Data_segment), but, it is only printing the part of the second name(EMWS2). what should I do to print the entire second name
Your issue is that SAS considers a period to be one of the default delimiters in macro variables. In this case, it looks like you want to be using a space to delimit items in data_names, so specify that:
%let data_name&i= %qscan(&data_names,&i., %str( ));
You're also missing semicolons in your %let statement and in your call to calling_data.