topic Re: Merge in SAS Programming

Merge

robertrao — Tue, 11 Dec 2012 22:11:30 GMT

Hi Team,

I have two tables like this.

i want to merge by the number.

but in table2 i have the same number but preceding with one or several zeros.

How can i remove them before I merge???

Regards

table1 table2

number number

6234 006234

76547 076547

70061 070061

5849 005849

Re: Merge

art297 — Tue, 11 Dec 2012 22:18:50 GMT

Are they just formatted that way (in which case you don't have to do anything but compare them) or is the field with the leading zeros a text field?

Re: Merge

Linlin — Tue, 11 Dec 2012 22:24:32 GMT

Hi,

try changing "number" in table1 before merging:

data table1;

input number $;

cards;

123

2345

3489

;

data temp(rename=(new=number));

length new $6.;

set table1;

new=put(number*1,z6.);

drop number;

proc print;run;

Re: Merge

robertrao — Tue, 11 Dec 2012 22:26:40 GMT

Hi,

Thanks for the reply. Its just a charecter. No format given to it .its in the $10. format.

Regards

Re: Merge

robertrao — Tue, 11 Dec 2012 22:32:24 GMT

Hi,

Thanks. This works too....

So you want me to max length of the number variable from the other table and use Z6 format!!!

Cool.

so thwe Z6 adds leading zeros???whats is the 1* for???

If my length is 9 should I write Z9.?????

Regards

Re: Merge

art297 — Tue, 11 Dec 2012 22:38:07 GMT

I would do the merge using proc sql and just convert the text on the fly. e.g.:

data table1;

input number x;

cards;

6234 1

76547 1

70061 1

5849 1

;

data table2;

informat number $10.;

input number y;

cards;

006234 2

076547 2

070061 2

005849 2

;

proc sql;

create table want as

select a.number,x,y

from table1 a

left join table2 b

on a.number=input(b.number,12.)

;

quit;

Re: Merge

robertrao — Tue, 11 Dec 2012 22:43:27 GMT

Could you also explain to me what this step is doing??

new=put(number*1,z6.);

if my length is 9 then have I to use Z9.???

Regards

Re: Merge

Linlin — Tue, 11 Dec 2012 22:45:08 GMT

"*1" converts a character variable to a numeric variable. If "number" in table1 is a numeric variable then you don't need "*1".

z6. adds leading zeros.

If my length is 9 should I write Z9.?????

i think so, you can try.

Re: Merge

robertrao — Tue, 11 Dec 2012 23:01:00 GMT

In the mean while my friend suggested to use this on the second table to eliminate leading zeros.it works too

mrn2=substr(number,verify(number,'0'));

Regards