Merge Queries

Question

I have a 1 Frontend report with 3 different radio buttons.
Radio Button B(Bookings)
Radio Button C(Cancellations)
Radio Button T(Both Bookings and Cancelations)
Query Underneath the report is something like this:
FOR RADIO BUTTON B(BOOKINGS)
SELECT X11,
X22,
X33,
SUM( COUNTAA) CNT_CURRENT_YEAR,
SUM( COUNTBB) CNT_PREV_YEAR,
'B' Booking_Cancel,
sysdate from_dt,
sysdate to_dt
FROM
(SELECT /*+ ORDERED */
X11,
X22,
X33,
count(ID) COUNTAA ,
+ 0 COUNTBB
FROM
TABLEp p,
TABLEv v,
TABLEs s,
TABLEx x
WHERE ...
AND TO_DATE(P.BOOKINGS_DATE) BETWEEN :ADT_FROM_DT AND :ADT_TO_DT --=======>>>ONLY CHANGE IS HERE
GROUP BY
X11,
X22
UNION ALL
SELECT /*+ ORDERED */
X11,
X22,
:ads_direction direction,
0 COUNTAA ,
count(ID) COUNTBB
FROM
TABLEp p,
TABLEv v,
TABLEs s,
TABLEx x
WHERE ...
AND TO_DATE(P.BOOKINGS_DATE) BETWEEN ADD_MONTHS(:ADT_FROM_DT, -12) AND ADD_MONTHS(:ADT_TO_DT, -12) --=======>>>ONLY CHANGE IS HERE
GROUP BY
X11,
X22)
GROUP BY Group_ID,
GROUP_DESC,
direction
ORDER BY GROUP_DESC
FOR RADIO BUTTON C(CANCELATIONS)
SELECT X11,
X22,
X33,
SUM( COUNTAA) CNT_CURRENT_YEAR,
SUM( COUNTBB) CNT_PREV_YEAR,
'B' Booking_Cancel,
sysdate from_dt,
sysdate to_dt
FROM
(SELECT /*+ ORDERED */
X11,
X22,
X33,
count(ID) COUNTAA ,
+ 0 COUNTBB
FROM
TABLEp p,
TABLEv v,
TABLEs s,
TABLEx x
WHERE ...
AND TO_DATE(P.CANCELLATION_DATE) BETWEEN :ADT_FROM_DT AND :ADT_TO_DT --=======>>>ONLY CHANGE IS HERE
GROUP BY
X11,
X22
UNION ALL
SELECT /*+ ORDERED */
X11,
X22,
:ads_direction direction,
0 COUNTAA ,
count(ID) COUNTBB
FROM
TABLEp p,
TABLEv v,
TABLEs s,
TABLEx x
WHERE ...
AND TO_DATE(P.CANCELLATION_DATE) BETWEEN ADD_MONTHS(:ADT_FROM_DT, -12) AND ADD_MONTHS(:ADT_TO_DT, -12) --=======>>>ONLY CHANGE IS HERE
GROUP BY
X11,
X22)
GROUP BY Group_ID,
GROUP_DESC,
direction
ORDER BY GROUP_DESC
FOR RADIO BUTTON T((Both Bookings and Cancelations)
==================
UNION OF BOTH ABOVE QUERIES
==================
SELECT X11,
X22,
X33,
SUM( COUNTAA) CNT_CURRENT_YEAR,
SUM( COUNTBB) CNT_PREV_YEAR,
'B' Booking_Cancel,
sysdate from_dt,
sysdate to_dt
FROM
(SELECT /*+ ORDERED */
X11,
X22,
X33,
count(ID) COUNTAA ,
+ 0 COUNTBB
FROM
TABLEp p,
TABLEv v,
TABLEs s,
TABLEx x
WHERE ...
AND TO_DATE(P.BOOKINGS_DATE) BETWEEN :ADT_FROM_DT AND :ADT_TO_DT --=======>>>ONLY CHANGE IS HERE
GROUP BY
X11,
X22
UNION ALL
SELECT /*+ ORDERED */
X11,
X22,
:ads_direction direction,
0 COUNTAA ,
count(ID) COUNTBB
FROM
TABLEp p,
TABLEv v,
TABLEs s,
TABLEx x
WHERE ...
AND TO_DATE(P.BOOKINGS_DATE) BETWEEN ADD_MONTHS(:ADT_FROM_DT, -12) AND ADD_MONTHS(:ADT_TO_DT, -12) --=======>>>ONLY CHANGE IS HERE
GROUP BY
X11,
X22)
GROUP BY Group_ID,
GROUP_DESC,
direction
ORDER BY GROUP_DESC
UNION ALL
SELECT X11,
X22,
X33,
SUM( COUNTAA) CNT_CURRENT_YEAR,
SUM( COUNTBB) CNT_PREV_YEAR,
'B' Booking_Cancel,
sysdate from_dt,
sysdate to_dt
FROM
(SELECT /*+ ORDERED */
X11,
X22,
X33,
count(ID) COUNTAA ,
+ 0 COUNTBB
FROM
TABLEp p,
TABLEv v,
TABLEs s,
TABLEx x
WHERE ...
AND TO_DATE(P.CANCELLATION_DATE) BETWEEN :ADT_FROM_DT AND :ADT_TO_DT --=======>>>ONLY CHANGE IS HERE
GROUP BY
X11,
X22
UNION ALL
SELECT /*+ ORDERED */
X11,
X22,
:ads_direction direction,
0 COUNTAA ,
count(ID) COUNTBB
FROM
TABLEp p,
TABLEv v,
TABLEs s,
TABLEx x
WHERE ...
AND TO_DATE(P.CANCELLATION_DATE) BETWEEN ADD_MONTHS(:ADT_FROM_DT, -12) AND ADD_MONTHS(:ADT_TO_DT, -12) --=======>>>ONLY CHANGE IS HERE
GROUP BY
X11,
X22)
GROUP BY Group_ID,
GROUP_DESC,
direction
ORDER BY GROUP_DESC
=======================
IS THERE A WAY I CAN USE ONLY 1 QUERY AND PASS PARAMETERS DEPENDING ON WHAT I CHOOSE AS THE RADIO BUTTON OPTION.
I am using Oacle 10g

Answer 1

As posted, my code will return a row even if both dates are populated, as long as either cancellation_date is null or cancellation_date is in the range. The Coalesce function returns the first non-null value from the list.
SQL> var radio_button varchar2(1);
SQL> exec :radio_button := 'B';
PL/SQL procedure successfully completed.
SQL> with t as (
  2     select 1 id, sysdate bookings_date, to_date(null) cancellation_date
  3     from dual union all
  4     select 2, sysdate - 1, null from dual union all
  5     select 3, null, sysdate from dual union all
  6     select 4, sysdate - 3, null from dual union all
  7     select 5, null, sysdate + 3 from dual union all
  8     select 6, sysdate - 1, sysdate from dual)
  9  select * from t
10  where CASE WHEN :radio_button = 'B' THEN bookings_date
11             WHEN :radio_button = 'C' THEN cancellation_date
12             WHEN :radio_button = 'T'
13                THEN COALESCE(cancellation_date, bookings_date) END BETWEEN sysdate - 1 AND
14                                                                            sysdate + 1;
        ID BOOKINGS_DA CANCELLATIO
         1 16-FEB-2012
         2 15-FEB-2012
         6 15-FEB-2012 16-FEB-2012
SQL> exec :radio_button := 'C';
PL/SQL procedure successfully completed.
SQL> /
        ID BOOKINGS_DA CANCELLATIO
         3             16-FEB-2012
         6 15-FEB-2012 16-FEB-2012
SQL> exec :radio_button := 'T';
PL/SQL procedure successfully completed.
SQL> /
        ID BOOKINGS_DA CANCELLATIO
         1 16-FEB-2012
         2 15-FEB-2012
         3             16-FEB-2012
         6 15-FEB-2012 16-FEB-2012Are you saying that if both bookings_date and cancellation date are populated, and both fall into the range, then you want to see a count for both booking and cancellations in the results if both is requested? I'm not sure that I understand the logic where a single record prior to the aggregation can be both a booking and a cancellation.
Perhaps if you posted some realistic sample data for at least the "current" year portion of the queries (the top half of your individual unions), it would be easier to visualize. Preferrably in the form of insert statements, or a with construct as I did above. A you only need to show a few the relevant columns (likely x11, id, bookings_date and cancellation_date would do for a conceptual test). PLease also post you expected results from the sample data you provide.
John