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Views Performance Issue, 7 millions records

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Views Performance Issue, 7 millions records Empty Views Performance Issue, 7 millions records

Post  sssqllearner Wed Oct 29, 2014 9:46 am


I have three views in the DWH. Each view takes approx. around 3 minutes to generate the results. Additionally each view generates 7 millions records. These views are affecting my SSAS cube performance in some or other way.

I have tried many options like using CTE instead of distinct, replace coalesce with isnull and replacing older-style inner joins to regular inner joins. Nothing is helping me to speed up the views. Also the views has 4 blocks of union all. Each block of query runs fine on themselves but when I run the whole view it is very slow as explained above.

Do you have any ideas of how to speed up this or start analysing the issue behind these view?



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