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Focal Point    Focal Point Forums  Hop To Forum Categories  WebFOCUS/FOCUS Forum on Focal Point     [CLOSED] Filter child records by a specific value

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[CLOSED] Filter child records by a specific value
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MelissaReed
Silver Member
posted
I have two tables joined together as a left outer join. Table A may or may not be related to records in table B and they have a variety of relationship types. I want to show all records in table A (whether there is a relationship or not) and only those in table B where relationship type = a specific value.

This message has been edited. Last edited by: <Kathryn Henning>,


WebFOCUS 8.0.09
Windows, All Outputs
 
Posts: 36 | Registered: November 19, 2014Report This Post
Luiz De Assis
Platinum Member
posted Hide Post
Melissa,

Have you tried to add a "where clause" (conditional join) to your join; such as:

WHERE B.TableB_Field = Spec_Value

Thanks

Luiz
 
Posts: 117 | Location: Denver | Registered: July 27, 2005Report This Post
MelissaReed
Silver Member
posted Hide Post
Yes I did put the where clause on there, but then I don't get the records that don't have the relationship at all. I need to have both.


WebFOCUS 8.0.09
Windows, All Outputs
 
Posts: 36 | Registered: November 19, 2014Report This Post
Darryl_uk
Silver Member
posted Hide Post
There may be a 'correct' answer, but in this situation I would do 2 extracts using each set of rule and then merge the hold files together to create the whole extract. So I would do a normal join and extract the data with tablea-tableb match, then a separate left_outer join and extract the data where tableb data eq missing. Then merge the 2 hold files together with a 'table file' and 'more'.


7.7.05 Windows.
 
Posts: 39 | Location: UK | Registered: July 11, 2012Report This Post
Darryl_uk
Silver Member
posted Hide Post
Sorry - I didn't notice this was in the infoassist forum so answered the question with a 'dev studio' hat on. Good luck with the problem.


7.7.05 Windows.
 
Posts: 39 | Location: UK | Registered: July 11, 2012Report This Post
StuBouyer
Guru
posted Hide Post
If you are using a LEFT_OUTER Join and have a WHERE clause with a specific value then any MISSING (ie NULL) values are automatically excluded. To bring back in those without a relationship try
WHERE B.TableB_Field EQ Spec_Value AND B.TableB_Field EQ MISSING


You may also need to add
SET ALL=PASS

depending on the adapter you are using

Cheers

Stu


WebFOCUS 8.2.03 (8.2.06 in testing)
 
Posts: 253 | Location: Melbourne, Australia | Registered: February 07, 2007Report This Post
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