topic Re: Joining tables using a value in SAS Enterprise Guide

Joining tables using a value

atang — Wed, 20 Mar 2013 01:33:57 GMT

I'm having troubles pulling rows from a dataset. They need to match a row in another dataset. Here's an example

DATA1

TYPE1	TYPE2	VALUE1	VALUE2
HAIR	EYES	BROWN	BLUE
SEX	EYES	MALE	BROWN
HAIR	SEX	BLONDE	FEMALE
SEX	EYES	MALE	BLUE

DATA2

NAME	HAIR	SEX	EYES
ROGER	BROWN	MALE	BLUE
GLEN	BLONDE	MALE	HAZEL
JULIE	BLONDE	FEMALE	BROWN

I want it to pull records in data2 based on matching the criteria in data1. The value in data1 will exactly match the column name in data2.

So the result would be:

ROGER

JULIE

Because their attributes match those laid out in data1.

I've spent a lot of time trying different approaches. Hopefully you guys can help.

Thanks!

Re: Joining tables using a value

PGStats — Wed, 20 Mar 2013 02:29:49 GMT

A bit tricky indeed...

data types;
array t{3} $ HAIR SEX EYES;
set data1;
t(findw("HAIR SEX EYES", trim(TYPE1), " ", "E")) = VALUE1;
t(findw("HAIR SEX EYES", trim(TYPE2) ," ", "E")) = VALUE2;
run;

proc sql;
select distinct d.name
from data2 as d, types as t
where sum(d.HAIR=t.HAIR, d.SEX=t.SEX, d.EYES=t.EYES) = 2;
quit;

Re: Joining tables using a value

Tom — Wed, 20 Mar 2013 03:12:25 GMT

Use the first dataset to generate a WHERE statement. I find it is easiest to do this with a datat step and the PUT statement.

data criteria ;

length type1 $32 value1 $20 type2 $32 value2 $20 ;

input TYPE1 TYPE2 VALUE1 VALUE2 ;

cards;

HAIR EYES BROWN BLUE

SEX EYES MALE BROWN

HAIR SEX BLONDE FEMALE

SEX EYES MALE BLUE

run;

data records ;

length NAME HAIR SEX EYES $20 ;

input name hair sex eyes ;

cards;

ROGER BROWN MALE BLUE

GLEN BLONDE MALE HAZEL

JULIE BLONDE FEMALE BROWN

run;

filename code temp;

data _null_;

file code;

if eof then put ';' ;

set criteria end=eof;

if _n_ = 1 then put 'WHERE';

else put ' OR' ;

put '(' type1 '= ' value1 :$quote. 'and ' type2 '= ' value2 :$quote. ')';

run;

data want ;

set records ;

%inc code / source2 ;

run;

Re: Joining tables using a value

atang — Wed, 20 Mar 2013 14:28:29 GMT

Perfect. Scalable for additional data and variables. Exactly what I was looking for. Thanks Tom.