Searching Sequence query in other query

Question

Hi
With code below when in table TMP_EQUIP_CRM have QTD =2 It return me 2 rows, when QTD = 3 return me 3 rows ....etc
SQL> SELECT t2.loc_cntr_id_sn, t2.loc_product_sn,
  2         ROW_NUMBER () OVER (PARTITION BY t2.loc_cntr_id_sn, setid, companyid, effdt, setid_product, loc_product_sn ORDER BY linha)                                                                                seqno_item_sn
  3    FROM (SELECT t1.*, ROWNUM linha
  4            FROM sysadm.tmp_equip_crm t1,
  5                 (SELECT     LEVEL l
  6                        FROM DUAL
  7                  CONNECT BY LEVEL <= 100)
  8           WHERE l <= t1.qtd) t2
  9  /
LOC_CNTR_ID_SN  LOC_PRODUCT_SN SEQNO_ITEM_SN
10              KIT01                      1
10              KIT01                      2
1000            KIT01                    1
100000          KIT01                   1
100009          KIT01                   1
100009          KIT01                   2
10001           KIT01                    1Now I must search a Date for each row, example of my query
SELECT active_dt
  INTO v_active_date
  FROM (SELECT cpc.active_dt, DENSE_RANK () OVER (ORDER BY cpc.active_dt, cpc.ROWID) linha
          FROM smt_360_conta_kenan@arbor smt, cmf_package_component@arbor cpc
         WHERE smt.convenio = p_external_id
           AND cpc.parent_account_no = smt.account_no
           AND cpc.component_id = p_component_id
           AND cpc.inactive_dt IS NULL) t1
WHERE t1.linha = p_linha;This Query can return me nothing, 1 or more rows,
Where p_linha must to be equal SEQNO_ITEM_SN from first query , If not found for a number, search with preview number thru 1, if Not found for nothing then must return only NULL
Example :
100010 KIT01 1
100010 KIT01 2
100010 KIT01 3
100010 KIT01 4
100010 KIT01 5
It must return me 5 dates
If there is only 3 records with parameters , then the records 4 and 5 will have same date from record 3
To do It with cursor is easy, but I must to do in unique query (SELECT), is htere some way ?
thank you in advance

Answer 1

Please post the execution plans of the query from both databases.
Do you have proper statistics gathered on these tables?