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  1.  Home
  2. RPG400-L
  3. February 2006

Re: Select a random record in SQL

SELECT rand(), field1, field2,...,fieldn from MY/FILE
   ORDER BY rand()
Read the first 2000 (they will be randomly ordered)
If you need aproximately 2000, you can use a "WHERE rand() < 0.02" and order by one of your fields 
_________________________________________________________________________________-

Dan wrote:


I have an RPG application that needs to select a subset of rows from a
table, and then randomly fetch 2000 rows from that subset.  (The subset will
have well over 100,000 rows.)

I noticed that SQL has a RAND() function, but I am unsure whether that can
be translated to the problem I am trying to solve.

(Since this is not wholly RPG-specific, would it be appropriate to
cross-post this to the midrange-l list?)

TIA,
Dan

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