Comments on: Cache http://kirtandesai.com/write/2007/09/08/cache/ Tue, 23 Aug 2011 14:40:20 -0700 hourly 1 http://wordpress.org/?v=3.0.2 By: Administrator http://kirtandesai.com/write/2007/09/08/cache/comment-page-1/#comment-13986 Administrator Wed, 30 Sep 2009 03:35:52 +0000 http://kirtandesai.com/write/2007/09/10/cache/#comment-13986 can you tell me why it would not help? Would you rather have random data coming in through the source .. and scan a sorted lookup cache file? (in some cases this might actually work faster) but but with large data , and lookup , i would rather let first few (million?) rows pass by faster and then let it scan ... using the index cache lookup transformation would know where to go , no? tell me why it would not help (or help). can you tell me why it would not help? Would you rather have random data coming in through the source .. and scan a sorted lookup cache file? (in some cases this might actually work faster) but but with large data , and lookup , i would rather let first few (million?) rows pass by faster and then let it scan … using the index cache lookup transformation would know where to go , no?

tell me why it would not help (or help).

]]> By: dev1 http://kirtandesai.com/write/2007/09/08/cache/comment-page-1/#comment-13979 dev1 Wed, 30 Sep 2009 02:49:51 +0000 http://kirtandesai.com/write/2007/09/10/cache/#comment-13979 Hi, Thanks for sharing the information with all of us. I was trying to understand why the sorted input would be faster for a lookup transformation. I do not recollect any option in lookup transformation where we can tell the lookup that input data is sorted. If that's true then how would sorted input help the lookup operation. I assume for every incoming row it would start the search from the top. i appreciate if you could reply. Thanks in advance. Hi, Thanks for sharing the information with all of us. I was trying to understand why the sorted input would be faster for a lookup transformation. I do not recollect any option in lookup transformation where we can tell the lookup that input data is sorted. If that’s true then how would sorted input help the lookup operation. I assume for every incoming row it would start the search from the top.

i appreciate if you could reply. Thanks in advance.

]]>