Switching dimensions depending on time of the day the report is accessed

Question

Hi,
We have a requirement where one of the dimension tables - ACCOUNT is unavailable during 6 pm - 8 pm and the query should go to ACCOUNT_BKUP table instead of ACCOUNT table during that time period. In other words, we want the query to go against ACCOUNT_BKUP table when a user accesses the report between 6 and 8 pm everyday and against ACCOUNT table during any other time. What is the best approach to model this scenario?
Edited by: vahibg on Aug 20, 2009 12:05 AM

Answer 1

Hi,
Try something with stored procedure ..
Outline of store procedure as follows
CREATE OR REPLACE PROCEDURE fetchdata ( p_cursor OUT refc)
IS
TYPE refc IS REF CURSOR;
BEGIN
     SELECT startDate,endDate INTO a,b FROM limitationTime;
     SELECT SYSDATE INTO curDateTime FROM dual;
     IF a < curDateTime or b>curDateTime THEN
          OPEN p_cursor FOR
          SELECT *
          FROM account;
     ELSE
          OPEN p_cursor FOR
          SELECT *
          FROM account_BACKUP;
     END IF;
END fetchdata;
hope it helped
--Srinivas