Still problem with SQL Between... Help me GURUS!

Question

I've already posted this, but I will try to put it more simple:
Imagine these Tables:
Absentee Table
ID_TRABALHADORES (Number PK) (Trabalhadores=Worker in english)
DAT_INI_AUS (Date) - Initial date of absence
DAT_FIM_AUS (Date) - End of Absence
Justification Table
ID_TRABALHADORES (Number PK)
DAT_INI_JST (Date)
DAT_FIM_JST (Date)
Now imagine that an user (Thru a Oracle Form) inputs one absence from 2005/12/13 to 2005/12/29.
Now the user must input the specified Justification for that absence. Suppose there's 2 Justifications for one SINGLE Absence.
From 2005/12/13 to 2005/12/20 as justified as ilness and from 2005/12/21 to 2005/12/29 as Death of a relative.
If I want to find out if someone forgot to fill in a justification, or if it's wrong justified (wrong dates, etc...), how can I work the SQL with Between? It doesn't work if an user puts 1 Absence to 2 Justifications, because it reports it as being an error, but it's not, because the period is correct. It works fine if an user puts the example above like this:
Absentee Form:
2005/12/13 to 2005/12/20 (Ilness)
2005/12/21 to 2005/12/29 (Death of relative)
Justific Form:
2005/12/13 to 2005/12/20 - Ilness
2005/12/21 to 2005/12/29 - Death of relative
With this I don't catch it because it's not an error and the date periods are correct, but using this way:
Absentee Form:
2005/12/13 to 2005/12/29 (Ilness and Death of relative)
Justific Form:
2005/12/13 to 2005/12/20 - Ilness
2005/12/21 to 2005/12/29 - Death of relative
1 Absence to 2 Justific I catch it as error, but the period is also correct...
There's any SQL script that can turn around this problem?
PS- I don't want to use any sort of code in FORMS or PL/SQL

Answer 1

If I understand the question correctly, you are trying to find out if the justification data matches the absence data or not. Also, if the user puts in two absences then there should be two justifications, right?
Also, the date range of absence should match date range of justification.
The two tables are linked by ID_TRABALHADORES column.
One approach could be:
Figure out if the number of absence records and justification records match or not:
select ID_TRABALHADORES , count(*) from Absentee
group by ID_TRABALHADORES
MINUS
select ID_TRABALHADORES , count(*) from justification
group by ID_TRABALHADORES
This will give a list of all those IDs where :
1. There are more records in Absentee but fewer justifications, e.g. 2 date ranges but a single justification
2. User forgot to enter a justification
Now let's take it further ... I understand that you want to catch cases where the dates do not match for the IDs identified above.
select id, min(dat_ini_aus), max(dat_fim_aus) from absentee group by id
minus
select id, min(dat_ini_aus), max(dat_fim_aus) from justification group by id
If the date ranges match then the query above will eliminate further records as the date range identified by min/max would match.
Anything that does not match could be due to missing records, bad dates etc.
I think it will help if we can see more data samples and some more explanation of the problem you are trying to solve. A BETWEEN clause may not be needed here.
Shakti
http://www.impact-sol.com
Developers of Guggi Oracle - Tool for DBAs and Developers