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Focal Point    Focal Point Forums  Hop To Forum Categories  WebFOCUS/FOCUS Forum on Focal Point     Maximum number of joins

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<Brendanbelfast>
posted
I'm recieving an error when I load my fex file: Maximum number of Joins exceeded.

Does anyone know how to get around this, or what the maximum number of joins allowed is?

Thanks
 
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Francis Mariani
Expert
posted Hide Post
From the documentation (WF 5.3.2):
quote:
Up to 63 joins can be in effect at one time, for a total of 64 segments, depending on the number of active segments and the number and length of the fields (there is a 32K limit on the length of all fields).
How many do you have? If it's an excessive number, consider asking the DBA to create a view.
 
Posts: 10577 | Location: Toronto, Ontario, Canada | Registered: April 27, 2005Report This Post
<Brendanbelfast>
posted
I only have 24 joins. Why would it say maximum number exceeded?
 
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Håkan
Guru
posted Hide Post
Focus allows for 16, I think the max for SQL is 15. If you're running against some kind of SQL db, I think you can work around it by creating a multi-segment synonym.

A bit of typing error, it should be 64 for Focus.

/H�kan
 
Posts: 319 | Location: Stockholm, Sweden | Registered: February 04, 2004Report This Post
reFOCUSing
Guru
posted Hide Post
It will depend on the number of fields in each table. I have it the limit with only joining two table (there were 300 fields in each table). You can get around this by writting a SQL-passthrough.
 
Posts: 406 | Location: Canada | Registered: May 31, 2004Report This Post
Kerry
Expert
posted Hide Post
Below are explanations for the error message:

MAXIMUM FIELDS IN SINGLE 'JOIN' EXPRESSION EXCEEDS 4:
The number of fields connected by the word 'AND' cannot exceed four. e.g., JOIN F1 AND F2...TO.

MAXIMUM NUMBER OF 'JOINS' EXCEEDED: CLEAR SOME AND RE-ENTER:
The number of separate JOIN commands exceeds the current limit of 16.

Hope this info helps.

Cheers, Big Grin

Kerry
 
Posts: 1948 | Location: New York | Registered: November 16, 2004Report This Post
susannah
Expert
posted Hide Post
Brendan, we need to know what kinds of files you're joining(focus, db2, ?), and what version of wf you're using(Perhaps you could put your version info into your signature.)
perhaps you could post your join statement set.
Have you taken your join statements and commented them out, adding them back in stepwise, to see exactly at what point your join breaks?
 
Posts: 3811 | Location: Manhattan | Registered: October 28, 2003Report This Post
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