Question

I have to fetch only 50 records at a time from database (DB2), for this I have been using Row_Number but now the persons are telling that this Row_Number is not stable and has bugs in it so now I have to write a different query for the same as I have to fetch only 50 records at a time.

So please can any body help me out for the same?

Thanks in advance.

The query which I have been using is

SELECT PLC.* 
FROM
     (SELECT 
          ROW_NUMBER() OVER (ORDER BY PRDLN_CTLG_OID) AS Row,
          PRDLN_CTLG_OID, 
          PRODUCT_LINE_OID      AS  PRODUCT_LINE_OID, 
          RTRIM(CATALOG_ID)             AS  CATALOG_ID,
      FROM 
          PROD_LINE_CATALOG 
      WHERE 
          PRODUCT_LINE_OID = :productLineOID AND ACTV_IND = 1 
      ORDER BY CATALOG_ID) PLC
WHERE  
    Row >= :startIndex AND Row <= :endIndex
ORDER BY 
    PLC.CATALOG_ID DESC 
WITH UR

Answer 1

use the fetch clause

FETCH FIRST 50 ROWS ONLY

edit

It looks like you use a startIndex and endIndex value. I realize you compare these to Row, but do you have another index to compare? If not, and you insist on moving from Row_Number, maybe the table needs another index.

Select PLC.* From (Select omitting row_number())
Where yournewindex >= startIndex
Fetch first 50 rows only