topic use sql to create a random sample in SAS Procedures

use sql to create a random sample

otis — Wed, 29 Apr 2015 15:07:41 GMT

I need to create a random sample of 100K from a billion record dataset. I searched online and learned that I can use raununi (x). But when I ran it in SAS Enterprise guide 5.1, it returned an error message "

CLI describe error: [IBM][CLI Driver][DB2/AIX64] SQL0440N No authorized routine named "RANUNI" of type "FUNCTION" having

compatible arguments was found. SQLSTATE=42884

My codes are like:

proc sql;

create table aa as

select *

from bb

where ranuni(5567) between 0.5 and 0.51

Any advice on how to create a random sample using SQL efficiently?

Thanks!

Re: use sql to create a random sample

Steelers_In_DC — Wed, 29 Apr 2015 15:13:43 GMT

If you have the right license for it I would use this:

proc surveyselect data=Customers

method=srs n=15

seed=1953 out=SampleStrata;

strata State Type;

run;

If you must use sql all the info you need should be here:

http://www2.sas.com/proceedings/sugi31/168-31.pdf

Re: use sql to create a random sample

RW9 — Wed, 29 Apr 2015 15:51:38 GMT

Randuni is a call function, therefore I don't think its available in proc SQL. You can although use the rand() function:

SAS(R) 9.2 Language Reference: Dictionary, Fourth Edition