MDX计算成员在where子句中

我是MDX查询的新手 . 我有以下查询，并希望将结果限制为仅显示保证金百分比> 0的记录 . 任何帮助将不胜感激 .

WITH 
    MEMBER [Measures].[Margin Pct] as ([Measures].[Mgmt Margin Excluding Markup]/[Measures].[Net Sales])*100,format_string="0.0" 
    MEMBER [Measures].[Mgmt Margin] as [Measures].[Mgmt Margin Excluding Markup],format_string="0.0" 
    MEMBER [Measures].[Mgmt Cost Unit] as [Measures].[Mgmt Cost Unit Excluding Markup],format_string="0.00" 
    MEMBER [Measures].[FOBPrce] as [Measures].[FOB Price],format_string="0.00" 
    MEMBER [Measures].[CommUnt] as [Measures].[Comm/Unit],format_string="0.000" 
    MEMBER [Measures].[RebUnt] as [Measures].[Reb/Unit],format_string="0.00" 
    MEMBER [Measures].[FrtUnt] as [Measures].[Frt/Unit],format_string="0.00" 
    MEMBER [Measures].[PriceUnt] as [Measures].[Price/Unit],format_string="0.00"
SELECT NON EMPTY { 
    [Measures].[Rpt Inv Shp Date], 
    [Measures].[Lbs Shipped],
    [Measures].[Net Sales], 
    [Measures].[FOBPrce], 
    [Measures].[CommUnt], 
    [Measures].[RebUnt], 
    [Measures].[FrtUnt], 
    [Measures].[PriceUnt], 
    [Measures].[Mgmt Cost Unit], 
    [Measures].[Mgmt Margin], 
    [Measures].[Margin Pct] 
} ON COLUMNS, NON EMPTY { 
    (
        [Item].[Group Sort].[Group Sort],
        [Item].[Form Sort].[Form Sort],
        [Item].[Specie Sort].[Specie Sort],
        {[Item].[Group thru Item ID].[Group].ALLMEMBERS},
        [Shrimp Group].[Shrimp Group].[Shrimp Group Name].ALLMEMBERS ,
        {[Item].[Form].[Form].ALLMEMBERS},
        [Item].[Meat - In Shell].[Meat or Inshell].ALLMEMBERS , 
        [Item].[Super Specie].[Super Specie].ALLMEMBERS ,
        {[Item].[Species].[Species].ALLMEMBERS},
        {[Item].[Item ID].[Item ID].ALLMEMBERS},
        [Item].[Desc-ItemID].[Item ID Description].ALLMEMBERS , 
        [Item].[Package Type].[Packaging].ALLMEMBERS ,
        {[Brand].[Brand].[Brand Name].ALLMEMBERS},
        {[Warehouse].[Warehouse].[Warehouse Code].ALLMEMBERS},
        [Order Invoice Lot].[Order-Invoice-Lot].[Lot].ALLMEMBERS ,
        {[Customer Account Number].[Customer Account No].Levels(1)},
        {[Ship To Customer].[Customer Name].Levels(1)},
        {[Sales Person].[Person].Levels(1)},
        [Order Invoice Lot].[Sales Order].[Sales Order].ALLMEMBERS , 
        [Order Invoice Lot].[Invoice].[Invoice].ALLMEMBERS
    ) 
} DIMENSION PROPERTIES MEMBER_CAPTION, MEMBER_UNIQUE_NAME ON ROWS FROM (
    SELECT StrToSet( '{[Breaded Group].[Breaded Group].[All]}' ,CONSTRAINED ) ON COLUMNS FROM (
    SELECT StrToSet( '{[Inventory Category].[Inventory Category].[All]}' ,CONSTRAINED ) ON COLUMNS FROM (
    SELECT StrToSet( '{[Sold To Customer].[Customer Buying Group].[All]}' ,CONSTRAINED ) ON COLUMNS FROM (
    SELECT StrToSet( '{[Ship To Customer Sales Group].[Ship To Customer Sales Group].[All]}' ,CONSTRAINED ) ON COLUMNS FROM (
    SELECT StrToSet( '{[Sold To Customer].[Customer Legal Group].[All]}' ,CONSTRAINED ) ON COLUMNS FROM (
    SELECT StrToSet( '{[Country Of Origin].[Long Name].[All]}' ,CONSTRAINED ) ON COLUMNS FROM (
    SELECT StrToSet( '{[Is Sample].[Sample].[Description].[Regular]}' ,CONSTRAINED ) ON COLUMNS FROM (
    SELECT StrToSet( '{[Invoicing Status].[Invoicing Status-Detail].[Detail].[Sale Only],[Invoicing Status].[Invoicing Status-Detail].[Detail].[Credit Only]}' ,CONSTRAINED ) ON COLUMNS FROM (
    SELECT StrToSet( '{[Invoice Date].[Fiscal Year-Quarter-Month].[Fiscal Month].[Jul-FY13]}' ,CONSTRAINED ) ON COLUMNS FROM (
    SELECT StrToSet( '{[Sold To Customer].[Name].[All]}' ,CONSTRAINED ) ON COLUMNS FROM (
    SELECT StrToSet( '{[Is NRV].[NRV].[All]}' ,CONSTRAINED ) 
ON COLUMNS FROM [FishTrackerReporting] ) ) ) ) ) ) ) ) ) ) )

我试图对[Measures] . [Margin Pct]使用where子句但是得到这个错误：

WHERE子句函数需要参数的元组集表达式 . 使用了字符串或数字表达式 .

我也尝试在查询的on列部分之后使用过滤器，但是出现了内存问题，所以我想我错过了一些东西 .