topic Re: Merge process with multiple variables in SAS Enterprise Guide

Merge process with multiple variables

woo — Tue, 18 Nov 2014 01:31:18 GMT

Hello, i need help to merge below table

have1

var1 var2 var3_a

1234567891 15721572 au

1234567891 26702670 io

have2

var1 var2 var3_b

1234567891 15721572 au

1234567891 26702670 io

1234567891 11301130 io

merge by var1 var2

want

1234567891 15721572 au

1234567891 26702670 io

1234567891 11301130 io

Thanks............

Re: Merge process with multiple variables

stat_sas — Tue, 18 Nov 2014 02:06:59 GMT

proc sql;

select a.* from have2 a

left join have1 b

on a.var1=b.var1

and a.var2=b.var2;

quit;

Re: Merge process with multiple variables

Haikuo — Tue, 18 Nov 2014 02:13:06 GMT

May I ask what is the difference between "have2" and "want"?

Re: Merge process with multiple variables

woo — Tue, 18 Nov 2014 03:16:08 GMT

sorry Hai.Kuo - so in some cases i have below situation;

var1 var2 var3_a

1234567891 15721572 au

1234567891 26702670 zz

have2

var1 var2 var3_b

1234567891 15721572 au

1234567891 26702670 io

1234567891 11301130 do

merge by var1 var2

want

var1 var2 var3_a

1234567891 15721572 au

1234567891 26702670 zz

1234567891 26702670 io

1234567891 11301130 do

thanks.......

Re: Merge process with multiple variables

Haikuo — Tue, 18 Nov 2014 03:30:28 GMT

Given both tables are sorted by var1-var3,

data want;

set have1 have2;

by var1 var2 var3;

run;

Haikuo

Re: Merge process with multiple variables

Tom — Tue, 18 Nov 2014 05:14:26 GMT

Does not look like you want to MERGE the tables as that would imply that you wanted to combine records from different tables based on matching key variables. Looks more like you want to UNION the two tables.

proc sql ;

create table want as

select var1,var2,var3_a as var3 from have1

union

select var1,var2,var3_b as var3 from have2

;

Re: Merge process with multiple variables

woo — Tue, 18 Nov 2014 17:44:11 GMT

Thanks Hai.kuo and Tom...Now i have two options