Comments on: Simple question about AS/400 query http://itknowledgeexchange.techtarget.com/itanswers/simple-question-about-as400-query/ Thu, 20 Jun 2013 07:28:06 +0000 hourly 1 By: tomliotta http://itknowledgeexchange.techtarget.com/itanswers/simple-question-about-as400-query/#comment-76902 tomliotta Fri, 07 May 2010 07:54:08 +0000 #comment-76902 …every rows has no relationship with the row above…

If that’s true, then it’s not a valid JOIN specification.

…all the rows are conditions that have to be satisfied togheter…

That is the case. All the rows are conditions that have to be satisfied. That is why AND works.

Tom

]]> By: eamon60 http://itknowledgeexchange.techtarget.com/itanswers/simple-question-about-as400-query/#comment-55341 eamon60 Wed, 30 Jul 2008 20:18:36 +0000 #comment-55341 The first file listed in the query is the primary file. The Primary file being the first file read. It’s more efficient to create relationships from the first file. The more relationships created the less effiicent the query. Especially when relationships are created between secondary and tertiary files. Hope this helps.

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