MDX查询执行了这么长时间

Question

我有一个MDX查询：

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]})) 

而且我有一个总表，期间蒙德里安使用执行查询。但是这个查询执行得这么久！当我减少“票据类型”过滤器的数量时，查询执行速度更快！请解释原因。

Answer 1

Crossjoins不是内存便宜操作。尝试，以取代“*”“”：

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

这一个替换Where子句：

过滤器是真的繁重的操作，你可以伊斯利做一个范围（:)

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] 
    } 
)