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sum problem [message #649531]

Wed, 30 March 2016 01:47

shahzad-ul-hasan
Messages: 643
Registered: August 2002

Senior Member

i have table (Student) which contains classes of students.i have another table which contain the absent of the students. if one student of any class not present in absent table the total strength of the students not calculated in summery column. /forum/fa/13079/0/

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Re: sum problem [message #649535 is a reply to message #649531]

Wed, 30 March 2016 02:52

cookiemonster
Messages: 13967
Registered: September 2008
Location: Rainy Manchester

Senior Member

So is the problem that records that are in the student table that don't appear in the absent table aren't listed in the report at all?
If so you probably need an outer join.

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Re: sum problem [message #649981 is a reply to message #649535]

Tue, 12 April 2016 00:54

shahzad-ul-hasan
Messages: 643
Registered: August 2002

Senior Member

Code: [Select all] [Show/ hide]

SELECT ALL ' '||STUDENT.CLASS||' ('||STUDENT.SECTION||')' cls, 
COUNT(STUDENT.STUID) css, COUNT(ABSENT1.ASTUID) aas, STUDENT.STUDENTID
FROM STUDENT, ABSENT, ABSENT1
WHERE (STUDENT.STATUS = 'PRESENT'
 AND ABSENT1.ABDATE(+) = :P
 AND STUDENT.DOA(+)<:P)
 AND ((ABSENT1.ABDATE = ABSENT.ABDATE(+))
 AND (STUDENT.STUID(+)= ABSENT1.ASTUID))
GROUP BY ' '||STUDENT.CLASS||' ('||STUDENT.SECTION||')', 
' '||STUDENT.CLASS||' ('||STUDENT.SECTION||')', STUDENT.STUDENTID

this is the main report query.

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Re: sum problem [message #649982 is a reply to message #649981]

Tue, 12 April 2016 01:10

Michel Cadot
Messages: 68758
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

With any SQL or PL/SQL question, please, Post a working Test case: create table (including all constraints) and insert statements along with the result you want with these data then we will be able work with your table and data. Explain with words and sentences the rules that lead to this result.

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Re: sum problem [message #649990 is a reply to message #649982]

Tue, 12 April 2016 03:42

cookiemonster
Messages: 13967
Registered: September 2008
Location: Rainy Manchester

Senior Member

You've tried to outer join every table in that query, why?

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