DB2 Using LIMIT and OFFSET

Question

I am developing a Java Web service allow paging when fetching big data set from a DB2 Database on a IBM Mid Range Machine (AS400).

For example; if there are 10000

Answer 1

DB2 for Linux Unix Windows (LUW) and DB2 for iSeries are different products. Likely, DB2 for iSeries does not support DB2_COMPATIBILITY_VECTOR. I'm not able to find mention of it in the iSeries Information Center.

Instead of LIMIT, you can use the FETCH FIRST 10 ROWS ONLY clause.

Instead of LIMIT and OFFSET, you should be able to use a subselect with the ROW_NUMBER olap function. Something like this:

 SELECT emp.EMPNO, emp.SALARY
 FROM (

     SELECT EMPNO, SALARY, 
            ROW_NUMBER() OVER(ORDER BY SALARY DESC) as row_number
     FROM EMPLOYEE

 ) emp
 WHERE emp.row_number > 10
 AND emp.row_number <= 20