Query for finding data during special holidays

Question

Hi, i have a table for special holidays that looks like this:
PROFILE_DAY
VAR_DATE
REGULAR_HOLIDAY
1/1/2013
H_WEEK_THURSDAY
3/28/2013
H_WEEK_FRIDAY
3/29/2013
REGULAR_HOLIDAY
12/24/2013
REGULAR_HOLIDAY
12/25/2013
REGULAR_HOLIDAY
12/31/2013
And another table (LOAD_PROFILE_TEST), which contains LOAD_PROF1 values from (TIME_EQ) 0 to 24 at intervals 0.25 for (PROFILE_DAY) MONDAY to SUNDAY including REGULAR_HOLIDAY, H_WEEK_THURSDAY and H_WEEK_FRIDAY.  All in all, this table contains 970 records (97 records between 0 to 24 with interval of 0.25 per PROFILE_DAY, with 10 distinct PROFILE_DAY).
TIME_EQ
PROFILE_DAY
LOAD_PROF1
LOAD_PROF2
0
REGULAR_HOLIDAY
11.47
0.25
REGULAR_HOLIDAY
11.27
0.5
REGULAR_HOLIDAY
11.3
0.75
REGULAR_HOLIDAY
11.08
0
MONDAY
11.27
0.25
MONDAY
11.33
0.5
MONDAY
11.18
Now, I have this query to update value of LOAD_PROF2 of the said table whenever parameters V_DATE_OUT & V_DATE_IN is entered:
UPDATE LOAD_PROFILE_TEST
     SET LOAD_PROF2 = LOAD_PROF1 + :LOAD_DIFF
     WHERE  UPPER(PROFILE_DAY) IN (select UPPER(to_char(:V_DATE_OUT + (level-1), 'fmDAY'))
                   from  dual
                   connect by level <=  :V_DATE_IN - :V_DATE_OUT  + 1
where :LOAD_DIFF is a certain pre-determined value.
This query works fine if i am trying to update regular days from MONDAY to SUNDAY.  What i would like to do is to determine if the two parameter dates, V_DATE_OUT & V_DATE_IN would fall under any of the holidays on the first table LOAD_PROFILE_TEST, then update only those rows.  For example, V_DATE_OUT = 12/02/2013, Monday and V_DATE_IN = 12/06/2013, Friday.  The query above would update the values of LOAD_PROF2 for PROFILE_DAY -  MONDAY to FRIDAY, corresponding to dates 12/02/2013 and 12/06/2013.  If however, V_DATE_OUT = 12/23/2013, Monday and V_DATE_IN = 12/27/2013, Friday, this should update the rows corresponding to PROFILE_DAY - MONDAY for 12/23/2013, THURSDAY for 12/26/2013, FRIDAY for 12/27/2013, and REGULAR_HOLIDAY for the dates 12/24/2013 and 12/25/2013 since these two are included in the first table (table of holidays).  This same scenario will work the same way when V_DATE_OUT  and/or V_DATE_IN fall in the dates 3/28/2013 and 3/29/2013.  All other dates not included in the table for special holidays will be treated according to the day they fall on (Monday thru Sunday).  I hope my point is clear.  Thank you in advance.

Answer 1

Thanks for your reply.  Firstly, I am using Forms [32 Bit] Version 10.1.2.0.2 (Production).  I will try to explain a little further but I don't know if i can give the exact details of the tables since this would be voluminous. First i have a table REG_HOLIDAYS, whcih contain the following:
PROFILE_DAY
VAR_DATE
REGULAR_HOLIDAY
1/1/2013
H_WEEK_THURSDAY
3/28/2013
H_WEEK_FRIDAY
3/29/2013
REGULAR_HOLIDAY
12/24/2013
REGULAR_HOLIDAY
12/31/2013
REGULAR_HOLIDAY
12/25/2013
Now i have another table LOAD_PROFILE_TEST which i will simplify just to show what i wanted to do:
CREATE
TABLE LOAD_PROFILE_TEST
TIME_EQ
NUMBER (5, 2),
PROFILE_DAY
VARCHAR2 (15 BYTE),
LOAD_PROF1
NUMBER (6, 2), 
LOAD_PROF2
NUMBER (6, 2)
Here are the sample values of this table:
TIME_EQ
PROFILE_DAY
LOAD_PROF1
LOAD_PROF2
0
Monday
2
0
Tuesday
2.1
0
Wednesday
2.3
0
Thursday
2.5
0
Friday
2.2
0
Saturday
2.4
0
Sunday
2.3
0
Regular_holiday
1.9
0.25
Monday
2.1
0.25
Tuesday
2.1
0.25
Wednesday
2.4
0.25
Thursday
2.2
0.25
Friday
2.5
0.25
Saturday
2.3
0.25
Sunday
2.3
0.25
Regular_holiday
2.5
However, in the actual table, TIME_EQ will start with 0 until 24 with interval of 0.25 (i.e 0, 0.25, 0.5, 0.75, 1, 1.25, 1.5, ...23.5, 23.75, 24).  So for a PROFILE_DAY of 'Monday', there will be 97 rows corresponding to TIME_EQ of 0 to 24.  The same is true for Tuesday, Wednesday until Sunday including Regular_holiday.  All in all, this table would contain 776 rows.  LOAD_PROF1 values are random values initally inputted with PROFILE_DAY and TIME_EQ.
The first goal is to UPDATE this table (LOAD_PROFILE_TEST) by updating the column LOAD_PROF2 by adding a certain parameter value, :LOAD_DIFF, say 0.1. Now, i will have two scenarios to show what i would like to happen.  First, i have two date parameters :V_DATE_OUT and :V_DATE_IN.
First Case, V_DATE_OUT = 12/15/2013 (Monday); V_DATE_IN = 12/22/2013 (Sunday)
I will have this query to update said table:
UPDATE LOAD_PROFILE_TEST
       SET LOAD_PROF2 = LOAD_PROF1 + :LOAD_DIFF
   WHERE   UPPER(PROFILE_DAY) IN (select UPPER(
                                                                 to_char(
                                                                      :V_DATE_OUT + (level-1),
                                                                      'fmDAY'))
                                                                from  dual
                                                 connect by level <=
                                                       :V_DATE_IN - :V_DATE_OUT  + 1);
The output of this query would be:
TIME_EQ
PROFILE_DAY
LOAD_PROF1
LOAD_PROF2
0
Monday
2
2.1
0
Tuesday
2.1
2.2
0
Wednesday
2.3
2.4
0
Thursday
2.5
2.6
0
Friday
2.2
2.3
0
Saturday
2.4
2.5
0
Sunday
2.3
2.4
0
Regular_holiday
1.9
0.25
Monday
2.1
2.2
0.25
Tuesday
2.1
2.2
0.25
Wednesday
2.4
2.5
0.25
Thursday
2.2
2.3
0.25
Friday
2.5
2.6
0.25
Saturday
2.3
2.4
0.25
Sunday
2.3
2.4
0.25
Regular_holiday
2.5
Since, 12/15/2013 up to 12/22/2013 is from Monday to Sunday without having a particular day included in the first table, REG_HOLIDAYS, therefore all the rows with Monday to Sunday are updated.
Second Case, V_DATE_OUT = 12/23/2013 (Monday); V_DATE_IN = 12/29/2013 (Sunday)
Take note that 12/24 and 12/25 are included in the first table, REG_HOLIDAYS, therefore i need a query so that this would be my output afterwards:
TIME_EQ
PROFILE_DAY
LOAD_PROF1
LOAD_PROF2
0
Monday
2
2.1
0
Tuesday
2.1
0
Wednesday
2.3
0
Thursday
2.5
2.6
0
Friday
2.2
2.3
0
Saturday
2.4
2.5
0
Sunday
2.3
2.4
0
Regular_holiday
1.9
2.0
0.25
Monday
2.1
2.2
0.25
Tuesday
2.1
0.25
Wednesday
2.4
0.25
Thursday
2.2
2.3
0.25
Friday
2.5
2.6
0.25
Saturday
2.3
2.4
0.25
Sunday
2.3
2.4
0.25
Regular_holiday
2.5
2.6
As can be seen, since 12/23/2013 up to 12/29/2013 is from Monday to Sunday, rows with Monday upto Sunday should be updated, HOWEVER, since 12/24 and 12/25 which falls on a Tuesday and a Wednesday also were declared as holidays (included in the REG_HOLIDAYS table),  instead of updating rows with PROFILE_DAY of Tuesday and Wednesday, the query should instead update rows with Regular_holiday as PROFILE_DAY and leave as is the rows with Tuesday and Wednesday.  Additional note, days declared in the REG_HOLIDAYS table with PROFILE_DAY of Regular_holidays are treated as DISTINCT as in the case of 12/24 and 12/25.
The query you gave me gives the correct value if the involved days between V_DATE_OUT and V_DATE_IN is from Monday to Sunday only, otherwise it always gives Regular_holiday only regardless of the other dates queried.  As in the first case above, it would give Monday to Sunday (correct) but for the second case, it will only give Regular_holiday, the other days (Monday, Thursday, Friday, Saturday and Sunday) was not outputted.
I hope this became clearer since i will still be needing this for another query which i will inquire again after resolving this issue.  Thanks a lot for your help.