How to fetch records with two recordset

Question

i want fetch records from the table using two recordset like
ResultSet r1=stmt.executeQuery("select * from pf_data");
i want to take another recodeset
ResultSet r2=stmt.executeQuery("select * from finyr");
I am using Microsoft SQL server as my database.
I am also closing the recordset like r1.close();
then i cannot take two recordset at the same time.

Answer 1

Hi,
This is an example of a Top-N problem, and here's one way to do it:
WITH got_r_num AS
    SELECT  item_id, supp_id, rnk                         -- RANK is not a good column name
    ,       DENSE_RANK () OVER ( PARTITION BY  item_id    -- Just guessing
                                 ORDER BY      rnk
                               )  AS r_num
    FROM    table_x
    WHERE   item_id  = 2      -- If desired
SELECT    item_id, supp_id. rnk
FROM      got_r_num
WHERE     r_num    <= 2
RANK is the name of a built-in function in Oracle, so it will cause lots of trouble if you use it as a column name.  (The RANK function is closely related to DENSE_RANK, used above.)
I hope this answers your question.
If not, post  a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all tables involved, and also post the results you want from that data.
Point out where the query above is giving the wrong results, and explain, using specific examples, how you get the correct results from the given data in those places.  If you changed the query at all, post your code.
Always say which version of Oracle you're using (e.g., 11.2.0.2.0).
See the forum FAQ: https://forums.oracle.com/message/9362002