cannot make it work

[Ying]

in a macro, I would like to make it fexible, instead of use  name = "tbl_&x1._&x2._&x3.", is there a way to make

tbl_&&x1

%do k=2 %to &numbertype;

    .._&&x&k

%end;

but how to make quotetion (") work in where statement?  Thank you!

proc sql;

  select attname from _v_relation_column

  where name = "tbl_&x1._&x2._&x3.";

quit;

[Tom · Accepted solution]

Sounds like you want to call a macro and pass in the number of values to expand and it will expand each of the those values.  So if N=3 then it will look like your example.

* Set up some values for the Xn macro variables. ;

%let x1=4 ;

%let x2=7;

%let x3= 1;

%* Define macro - This version the prefix used to generate the macro variable reference is an optional parameter ;

%macro x(n,var=x);

%local i ret ;

%do i=1 %to &n ;

%let ret=&ret._&&&var.&i;

%end;

&ret.

%mend ;

%put %x(3);

_4_7_1

So then your WHERE clause becomes:

where name="tbl%x(3)" ;

If you are doing this within an already existing macro you can use the same concept without the need to define another macro.  You just need to introduce the new macro variable to hold the generated string.

%let tbl=tbl;

%do k=1 %to &numbertype;

  %let tbl=&tbl._&&x&k ;

%end;

...

where name="&tbl"

...

[Ying]

Thank you!