Sales_amount_without_tax__c
    Case( Currency__c,"RMB", Sales_Amount__c /1.17, 
"USD",IF(Shipping_date__c >= Datevalue("2012-10-01"), Sales_Amount__c * 0.8076915, IF Shipping_date__c >= 2016-07-01, Sales_Amount__c * 0.8333325 , 2012-10-01之前的,Sales_Amount__c * 0.846153),Sales_Amount__c * 1)
20190327前
Case( Currency__c,"RMB", if(today()>=Datevalue("2018-05-01"), Sales_Amount__c /1.16,Sales_Amount__c /1.17) 
,"USD",IF(Shipping_date_Copy__c>=Datevalue($Label.Tax_Foreign_Date),Sales_Amount__c * 6.8, 
IF(Shipping_date_Copy__c>=Datevalue("2018-05-01"),Sales_Amount__c * 6.3, 
IF(Shipping_date_Copy__c>=Datevalue("2016-12-01"),Sales_Amount__c * 6.8, 
IF(Shipping_date_Copy__c>=Datevalue("2016-07-01"),Sales_Amount__c * 6.5, 
IF(Shipping_date_Copy__c>=Datevalue("2012-10-01"), 
Sales_Amount__c * 6.3, Sales_Amount__c * 6.6 
) 
) 
) 
) 
) 
,0 
)
    false
    Case( Currency__c,"RMB", if(today()>=Datevalue($Label.Tax_Date_13), Sales_Amount__c /1.13,Sales_Amount__c /1.16) 
,"USD",IF(Shipping_date_Copy__c>=Datevalue($Label.Tax_Foreign_Date),Sales_Amount__c * 6.8, 
IF(Shipping_date_Copy__c>=Datevalue("2018-05-01"),Sales_Amount__c * 6.3, 
IF(Shipping_date_Copy__c>=Datevalue("2016-12-01"),Sales_Amount__c * 6.8, 
IF(Shipping_date_Copy__c>=Datevalue("2016-07-01"),Sales_Amount__c * 6.5, 
IF(Shipping_date_Copy__c>=Datevalue("2012-10-01"), 
Sales_Amount__c * 6.3, Sales_Amount__c * 6.6 
) 
) 
) 
) 
) 
,0 
)
    BlankAsZero
    数字
    
    18
    false
    2
    false
    Number
    false