How to merge two data sets

[fongdo]

I would like to merge two data sets as  an example below. Could you kindly advise? 

Thank you very much in advance

HAVE_1

FIRM

1

2

HAVE_2

DATE

12/08/2017

22/12/2018

06/10/2019

WANT

FIRM                     DATE

1                         12/08/2017

1                         22/12/2018

1                         06/10/2019

2                         12/08/2017

2                         22/12/2018

2                         06/10/2019

[novinosrin · Accepted solution]

Try cartesian

proc sql;
create table want as
select firm, date
from have_1, have_2;
quit;

[fongdo]

Many thanks @novinosrin 

[PeterClemmensen]

data have_1;
input firm;
datalines;
1
2
;

data have_2;
input date :ddmmyy10.;
format date ddmmyy10.;
datalines;
12/08/2017
22/12/2018
06/10/2019
;

data want;
   set have_1;
   do i=1 to n;
      set have_2 point=i nobs=n;
      output;
   end;
run;

[fongdo]

Thank a lot @PeterClemmensen