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Post Prodigy
Post Prodigy

Merging queries has performance issues

 I am working on pibx file. The file takes data from 3 to 4 different tables of SQL database. The file also gets data from 3 to 4 CSV files. The size of csv files varies from a few hundred kilobytes to 5 MB. I used merge queries and attach desired columns from a couple of csv files into fact tables. I noticed that the performance of pibx file (slow down) after using merge queries. I worked on the optimize the performance of pibx file and reduced the size of the pibx file reduced from 35 MB to 16 MB.

However, I am still facing a performance issue. When I tried to refresh the data, it never refreshed the data. For some tables, it says that evaluating and for other tables it says waiting for other queries. I waited for a couple of hours but the same status was showing and it did not progress further



sample file can be download from here


Any help would be really appreciated.

Super User
Super User

Performance issue: Very tough to see what is going on 

Please check if these articles helps in identifying the issue...

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