Help using Base SAS procedures

Update values in a table if columns match a second table?

Reply
Occasional Contributor
Posts: 18

Update values in a table if columns match a second table?

Hello,

 

I'm trying to update the names table, but only if two of its columns match the ones from the donations table. Is it possible to do it in a single block of code?

 

data names;
input name $ ssn $ invited $;
datalines;
john 10 n
phil 12 n
charles 13 n
;
data donations;
input name $ ssn $ donated;
datalines;
joe 23 1000
george 18 4599
phil 12 6553
;

proc sql;
	update names as a
	set invited='y'
	where (a.name=donations.name and a.ssn=donations.ssn);
quit;
Trusted Advisor
Posts: 1,131

Re: Update values in a table if columns match a second table?

Please try

 

proc sql;
create table test as select a.name,a.ssn,b.donated, 
case when a.name=b.name and a.ssn=b.ssn then 'y' else a._invited end as invited 
from names(rename=(invited=_invited)) as a left join donations as b on a.name=b.name and a.ssn=b.ssn;
quit;
Thanks,
Jag
Super User
Posts: 9,682

Re: Update values in a table if columns match a second table?

data names;
input name $ ssn $ invited $;
datalines;
john 10 n
phil 12 n
charles 13 n
;
data donations;
input name $ ssn $ donated;
datalines;
joe 23 1000
george 18 4599
phil 12 6553
;

proc sql;
	update names as a
	set invited='y'
	where exists(select * from donations where 
a.nam
e=donations.name and a.ssn=donations.ssn);
quit;
Ask a Question
Discussion stats
  • 2 replies
  • 116 views
  • 1 like
  • 3 in conversation