Query Hangs in Apex but runs quickly in SQL

Question

Hi,
I'm using Apex version 4.1.
I have an interactive report that just hangs when I run it, but the query runs in about 19 seconds in AquaData when I hard-code my bind variables. The bind variables are a start and end date, and they are used twice to pull a date range from two different fields. I'm wondering if the bad performance has something to do with that? I have to call the start and end date twice in my query. Even when I try Debug or SQL Commands in Apex it just hangs.
Any ideas on how to improve this?
Thanks for your help.

Answer 1

Greg,
You wrote: but the query runs in about 19 seconds in AquaData when I hard-code my bind variables.Do those same hard-coded bind variables not execute in SQL Commands ?
Here is your code formatted so others may see something that I am not seeing: Then again; where does the alias qce come from?
SELECT     f.fac_id AS "Office ID",
           f.fac_name AS "Office Name",
           SUM(CASE
                  WHEN ADD_MONTHS ( pt.date_posted, - ( 12 * 18 ) ) >=
                          p.date_of_birth
                  THEN
                     1
                  ELSE
                     0
               END)
              AS "Adult Pat Count",
           ROUND (
                   NVL (
                         SUM(CASE
                                WHEN ADD_MONTHS ( pt.date_posted,
                                                  - ( 12 * 18 ) ) >=
                                        p.date_of_birth
                                THEN
                                   1
                                ELSE
                                   0
                             END)
                         / COUNT ( * ),
                         0
                   2
           * 100
              AS "Adult Pat %",
           SUM(CASE
                  WHEN ADD_MONTHS ( pt.date_posted, - ( 12 * 18 ) ) <=
                          p.date_of_birth
                  THEN
                     1
                  ELSE
                     0
               END)
              AS "Pedo Pat Count",
           ROUND (
                   SUM(CASE
                          WHEN ADD_MONTHS ( pt.date_posted, - ( 12 * 18 ) ) <=
                                  p.date_of_birth
                          THEN
                             1
                          ELSE
                             0
                       END)
                   / COUNT ( * ),
                   2
           * 100
              AS "Pedo Pat %",
           SUM(CASE
                  WHEN ADD_MONTHS ( pt.date_posted, - ( 12 * 18 ) ) >=
                          p.date_of_birth
                  THEN
                     pt.amount_tot
                  ELSE
                     0
               END)
              AS "Adult Rev",
           DECODE (
                    SUM ( pt.amount_tot ),
                    0,
                    0,
                    ROUND (
                            NVL (
                                  SUM(CASE
                                         WHEN ADD_MONTHS ( pt.date_posted,
                                                           - ( 12 * 18 ) ) >=
                                                 p.date_of_birth
                                         THEN
                                            pt.amount_tot
                                         ELSE
                                            0
                                      END)
                                  / SUM ( pt.amount_tot ),
                                  0
                            2
           * 100
              AS "Adult Rev %",
           SUM(CASE
                  WHEN ADD_MONTHS ( pt.date_posted, - ( 12 * 18 ) ) <=
                          p.date_of_birth
                  THEN
                     pt.amount_tot
                  ELSE
                     0
               END)
              AS "Pedo Rev",
           DECODE (
                    SUM ( pt.amount_tot ),
                    0,
                    0,
                    ROUND (
                            NVL (
                                  SUM(CASE
                                         WHEN ADD_MONTHS ( pt.date_posted,
                                                           - ( 12 * 18 ) ) <=
                                                 p.date_of_birth
                                         THEN
                                            pt.amount_tot
                                         ELSE
                                            0
                                      END)
                                  / SUM ( pt.amount_tot ),
                                  0
                            2
           * 100
              AS "Pedo Rev %"
FROM                   pats p
                    JOIN
                       clinic_ext ce
                    ON p.clinic_id = ce.clinic_id AND p.loc_id = ce.loc_id
                 JOIN
                    pat_trans_rep pt
                 ON     p.clinic_id = pt.clinic_id
                    AND p.unique_id = pt.unique_id
                    AND pt.charge_yn = 'Y'
              JOIN
                 fac_hier_links fk
              ON qce.fac_id = fk.fac_id
           JOIN
              fac f
           ON qce.fac_id = f.fac_id
WHERE      p.date_of_first_visit BETWEEN TO_DATE ( :p5_start_date,
                                                   'MM/DD/YYYY' )
                                     AND  TO_DATE ( :p5_end_date,
                                                    'MM/DD/YYYY' )
           AND pt.date_posted BETWEEN TO_DATE ( :p5_start_date, 'MM/DD/YYYY' )
                                  AND  TO_DATE ( :p5_end_date, 'MM/DD/YYYY' )
GROUP BY   f.fac_id, f.fac_nameJeff
Edited by: jwellsnh on Sep 15, 2011 1:49 PM