MDX запрос был выполнен так долго

Question

У меня есть MDX-запрос:

SELECT 
{[Measures].[Count of Tickets], [Measures].[Ticket Average Per Day]} ON COLUMNS, 
{[Specification].[Specification].Members} ON ROWS 
FROM [Tickets Star Schema] 
WHERE 
({Filter([Creation Date].[Day].Members, [Creation Date].[Day].CurrentMember.Name >= '2017/02/06' AND [Creation Date].[Day].CurrentMember.Name <= '2017/02/13')} * ({[Ticket Type].[Ticket Type].[9145452713113549283], [Ticket Type].[Ticket Type].[9134488303913230171], [Ticket Type].[Ticket Type].[9138837241613081595], [Ticket Type].[Ticket Type].[9138836630013081453], [Ticket Type].[Ticket Type].[9134833380413407058], [Ticket Type].[Ticket Type].[9145452713113549281], [Ticket Type].[Ticket Type].[9134911151013454609], [Ticket Type].[Ticket Type].[9134783010613387189], [Ticket Type].[Ticket Type].[9134783010613387187], [Ticket Type].[Ticket Type].[9138837241613081613], [Ticket Type].[Ticket Type].[9134654662613285455], [Ticket Type].[Ticket Type].[9140432570013809078], [Ticket Type].[Ticket Type].[9145452972713549451], [Ticket Type].[Ticket Type].[9140432570013809076], [Ticket Type].[Ticket Type].[9138836630013081428], [Ticket Type].[Ticket Type].[9145452972713549453], [Ticket Type].[Ticket Type].[9145452972713549455], [Ticket Type].[Ticket Type].[9145452972713549457], [Ticket Type].[Ticket Type].[9145452972713549459], [Ticket Type].[Ticket Type].[9145609457713578112], [Ticket Type].[Ticket Type].[9134792932413392960], [Ticket Type].[Ticket Type].[9134833277313407014], [Ticket Type].[Ticket Type].[9134792932413392962], [Ticket Type].[Ticket Type].[9134911151013454617], [Ticket Type].[Ticket Type].[9134911151013454615], [Ticket Type].[Ticket Type].[9138836630013081446], [Ticket Type].[Ticket Type].[9145452713113549279], [Ticket Type].[Ticket Type].[9145452713113549277], [Ticket Type].[Ticket Type].[9138837241613081620], [Ticket Type].[Ticket Type].[9145452713113549275], [Ticket Type].[Ticket Type].[9139560292713345110], [Ticket Type].[Ticket Type].[9145609457713578108], [Ticket Type].[Ticket Type].[9134654662613285461], [Ticket Type].[Ticket Type].[9134654662613285463], [Ticket Type].[Ticket Type].[9139560292713345112], [Ticket Type].[Ticket Type].[9145609457713578106], [Ticket Type].[Ticket Type].[9134792932413392958], [Ticket Type].[Ticket Type].[9134488303913230179], [Ticket Type].[Ticket Type].[9135138327113743686], [Ticket Type].[Ticket Type].[9134783010613387181], [Ticket Type].[Ticket Type].[9134488303913230177]})) 

И у меня есть сводная таблица, которая с помощью Мондриана во время для выполнения запроса. Но этот запрос выполняется так долго! Когда я меньше подсчитываю фильтры типа «Ticket Type», запрос выполняется быстрее! Пожалуйста, объясните, почему.

Answer 1

Crossjoins - это не дешёвые операции с памятью. Попробуйте заменить «*» с «»:

SELECT 
{[Measures].[Count of Tickets], [Measures].[Ticket Average Per Day]} ON COLUMNS, 
{[Specification].[Specification].Members} ON ROWS 
FROM [Tickets Star Schema] 
WHERE 
({Filter([Creation Date].[Day].Members, [Creation Date].[Day].CurrentMember.Name >= '2017/02/06' AND [Creation Date].[Day].CurrentMember.Name <= '2017/02/13')}, ({[Ticket Type].[Ticket Type].[9145452713113549283], [Ticket Type].[Ticket Type].[9134488303913230171], [Ticket Type].[Ticket Type].[9138837241613081595], [Ticket Type].[Ticket Type].[9138836630013081453], [Ticket Type].[Ticket Type].[9134833380413407058], [Ticket Type].[Ticket Type].[9145452713113549281], [Ticket Type].[Ticket Type].[9134911151013454609], [Ticket Type].[Ticket Type].[9134783010613387189], [Ticket Type].[Ticket Type].[9134783010613387187], [Ticket Type].[Ticket Type].[9138837241613081613], [Ticket Type].[Ticket Type].[9134654662613285455], [Ticket Type].[Ticket Type].[9140432570013809078], [Ticket Type].[Ticket Type].[9145452972713549451], [Ticket Type].[Ticket Type].[9140432570013809076], [Ticket Type].[Ticket Type].[9138836630013081428], [Ticket Type].[Ticket Type].[9145452972713549453], [Ticket Type].[Ticket Type].[9145452972713549455], [Ticket Type].[Ticket Type].[9145452972713549457], [Ticket Type].[Ticket Type].[9145452972713549459], [Ticket Type].[Ticket Type].[9145609457713578112], [Ticket Type].[Ticket Type].[9134792932413392960], [Ticket Type].[Ticket Type].[9134833277313407014], [Ticket Type].[Ticket Type].[9134792932413392962], [Ticket Type].[Ticket Type].[9134911151013454617], [Ticket Type].[Ticket Type].[9134911151013454615], [Ticket Type].[Ticket Type].[9138836630013081446], [Ticket Type].[Ticket Type].[9145452713113549279], [Ticket Type].[Ticket Type].[9145452713113549277], [Ticket Type].[Ticket Type].[9138837241613081620], [Ticket Type].[Ticket Type].[9145452713113549275], [Ticket Type].[Ticket Type].[9139560292713345110], [Ticket Type].[Ticket Type].[9145609457713578108], [Ticket Type].[Ticket Type].[9134654662613285461], [Ticket Type].[Ticket Type].[9134654662613285463], [Ticket Type].[Ticket Type].[9139560292713345112], [Ticket Type].[Ticket Type].[9145609457713578106], [Ticket Type].[Ticket Type].[9134792932413392958], [Ticket Type].[Ticket Type].[9134488303913230179], [Ticket Type].[Ticket Type].[9135138327113743686], [Ticket Type].[Ticket Type].[9134783010613387181], [Ticket Type].[Ticket Type].[9134488303913230177]})) 

Answer 2

Заменить где положение с этим одним:

Фильтр действительно тяжелая работа, вы можете Исли сделать это с Range (:)

WHERE 
(
    { 
     [Creation Date].[Day].[2017/02/06]:[Creation Date].[Day].[2017/02/13] 
    }, 
    { 
     [Ticket Type].[Ticket Type].[9145452713113549283], 
     [Ticket Type].[Ticket Type].[9134488303913230171], 
     [Ticket Type].[Ticket Type].[9138837241613081595], 
     [Ticket Type].[Ticket Type].[9138836630013081453], 
     [Ticket Type].[Ticket Type].[9134833380413407058], 
     [Ticket Type].[Ticket Type].[9145452713113549281], 
     [Ticket Type].[Ticket Type].[9134911151013454609], 
     [Ticket Type].[Ticket Type].[9134783010613387189], 
     [Ticket Type].[Ticket Type].[9134783010613387187], 
     [Ticket Type].[Ticket Type].[9138837241613081613], 
     [Ticket Type].[Ticket Type].[9134654662613285455], 
     [Ticket Type].[Ticket Type].[9140432570013809078], 
     [Ticket Type].[Ticket Type].[9145452972713549451], 
     [Ticket Type].[Ticket Type].[9140432570013809076], 
     [Ticket Type].[Ticket Type].[9138836630013081428], 
     [Ticket Type].[Ticket Type].[9145452972713549453], 
     [Ticket Type].[Ticket Type].[9145452972713549455], 
     [Ticket Type].[Ticket Type].[9145452972713549457], 
     [Ticket Type].[Ticket Type].[9145452972713549459], 
     [Ticket Type].[Ticket Type].[9145609457713578112], 
     [Ticket Type].[Ticket Type].[9134792932413392960], 
     [Ticket Type].[Ticket Type].[9134833277313407014], 
     [Ticket Type].[Ticket Type].[9134792932413392962], 
     [Ticket Type].[Ticket Type].[9134911151013454617], 
     [Ticket Type].[Ticket Type].[9134911151013454615], 
     [Ticket Type].[Ticket Type].[9138836630013081446], 
     [Ticket Type].[Ticket Type].[9145452713113549279], 
     [Ticket Type].[Ticket Type].[9145452713113549277], 
     [Ticket Type].[Ticket Type].[9138837241613081620], 
     [Ticket Type].[Ticket Type].[9145452713113549275], 
     [Ticket Type].[Ticket Type].[9139560292713345110], 
     [Ticket Type].[Ticket Type].[9145609457713578108], 
     [Ticket Type].[Ticket Type].[9134654662613285461], 
     [Ticket Type].[Ticket Type].[9134654662613285463], 
     [Ticket Type].[Ticket Type].[9139560292713345112], 
     [Ticket Type].[Ticket Type].[9145609457713578106], 
     [Ticket Type].[Ticket Type].[9134792932413392958], 
     [Ticket Type].[Ticket Type].[9134488303913230179], 
     [Ticket Type].[Ticket Type].[9135138327113743686], 
     [Ticket Type].[Ticket Type].[9134783010613387181], 
     [Ticket Type].[Ticket Type].[9134488303913230177] 
    } 
)