Comments on: AS/400 query http://itknowledgeexchange.techtarget.com/itanswers/query-6/ Thu, 23 May 2013 20:47:04 +0000 hourly 1 By: tomliotta http://itknowledgeexchange.techtarget.com/itanswers/query-6/#comment-107740 tomliotta Fri, 25 May 2012 06:38:14 +0000 #comment-107740 It is possible to create logical file on join logical file?

No, not if it’s a native DDS logical file. If it’s a join logical file that’s a SQL VIEW, then yes, you can create another logical file that is also a SQL VIEW over it.

Tom

]]> By: graybeard52 http://itknowledgeexchange.techtarget.com/itanswers/query-6/#comment-107686 graybeard52 Tue, 22 May 2012 13:58:49 +0000 #comment-107686 You can however, create a SQL view over a logical (though not the best for performace), or a SQL view over another SQL view.
In most cases, a SQL view will work as well as an unkeyed logical. Depends what you are trying to accomplish.

]]> By: sudheer794 http://itknowledgeexchange.techtarget.com/itanswers/query-6/#comment-107676 sudheer794 Tue, 22 May 2012 10:08:20 +0000 #comment-107676 you cannot create a Logical File based on another Logical File. You can do it based on Physical Files.

]]> By: philpl1jb http://itknowledgeexchange.techtarget.com/itanswers/query-6/#comment-107619 philpl1jb Sat, 19 May 2012 09:58:46 +0000 #comment-107619 You create a new logical based on the actual physicals.

]]> By: anupsshelke http://itknowledgeexchange.techtarget.com/itanswers/query-6/#comment-107604 anupsshelke Fri, 18 May 2012 11:16:04 +0000 #comment-107604 thank you sir
Raja7rays

]]> By: raja7rays http://itknowledgeexchange.techtarget.com/itanswers/query-6/#comment-107596 raja7rays Fri, 18 May 2012 09:40:14 +0000 #comment-107596 not possible, bcoz join file is one of the logical file then how could u build the lf on another lf, so it’s not possible

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