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08.26.2008 at 10:30PM PDT, ID: 23680979
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7.5

Oracle table, Randomly select specified number of rows

Asked by shanikawm in Oracle 10.x, Perl Programming Language, PL / SQL

Tags:

I have oracle table which has some transaction details of customers. Columns are
Date_time,Customer_id( Unique), Transaction_id(unique), Transaction_amount.

One customer may do several (Any number of)  transactions per day.

1. At the end of each day I want to pick  x (e.g. 100) unique customers from the table randomly as winners.
2. Winning transactions can be copied to the winners table which has same structure.
3. A winner of past y ( e.g. 5 days) days should not be a winner of today.

What is the best method to do this?

Note: I use perl to connect to db and populate the table. Perl script can be used to do this. But better if I can use Oracle/ SQL function.

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[+][-]08.26.2008 at 11:07PM PDT, ID: 22322196

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Zones: Oracle 10.x, Perl Programming Language, PL / SQL
Tags: Oracle 10g, Perl
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Solution Provided By: sujith80
Participating Experts: 2
Solution Grade: A
 
 
[+][-]08.27.2008 at 02:46AM PDT, ID: 22322897

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