topic Re: proc sql left join in SAS Programming

proc sql left join

LanMin — Thu, 25 Apr 2013 23:09:29 GMT

Hi, all

I want to merge to datasets

data1 has VAR1 VAR2 VAR3 year

data2 has VAR1 VAR2 VAR4 VAR 5 year

I use proc sql left join data1 with data2 with the following conditions :

data1.var1=data2.var1

1993<year<2000

i got error using the code below:

proc sql;
create table WANT as select
A.*, B.*
From DATA1 as A left join DATA2 as B
WHERE 1993<=YEAR<=2000
On A.VAR1 =B.VAR2
order by VAR1, year;

quit;

please help and Thanks!

Lan

Tom — Thu, 25 Apr 2013 23:59:17 GMT

Which of the two YEAR variables do you want to subset on?

Perhaps you want to add the condition that A.year = B.year ?

Since you are doing a LEFT JOIN perhaps you want to subset on A.year ? Or perhaps both?

PGStats — Fri, 26 Apr 2013 00:19:39 GMT

Let me try to guess and at least give you a starting point :

proc sql;
create table WANT as select
A.*, B.VAR4, B.VAR5
From DATA1 as A left join DATA2 as B

on A.VAR1=B.VAR1 and A.VAR2=B.VAR2 and A.year=B.year
WHERE A.year between 1993 and 2000
order by VAR1, year;

select * from WANT;

quit;