T-SQL不執行WHERE子句的第二部分SSRS

Question

我有一個從存儲過程運行的SSRS報告。我有兩個必須選擇的參數。我的第一個參數完美的作品，而是選擇了第二個參數時（REP）它獲取該報告忽略，返回所有衆議員

@Town Varchar(100) 
,@Rep Varchar(100) 

    select 
    a.Customer 
    ,a.CustName 
    ,a.Rep 
    ,a.Town 
    ,a.Qty 
    ,a.SalesType 
    ,b.Qty1 
    ,c.Qty2 
    ...... 
    from #1 a 
    left join #2 b 
    on a.Rep = b.Rep 
    and a.Town = b.Town 
    and a.Customer = b.Customer 
    and a.SalesType = b.SalesType 
    left join #3 c 
    .......... 
    WHERE ('ALL' IN (@Town)) OR  (a.Town IN (@Town)) 
    and ('ALL' IN (@Rep)) OR  (a.Rep IN (@Rep)) 

Answer 1

猜在這裏，但我假設你想要的條款爲@Town和@Rep每個組都要進行評估。要做到這一點：

WHERE ('ALL' IN (@Town) OR  a.Town IN (@Town)) 
and ('ALL' IN (@Rep) OR  a.Rep IN (@Rep)) 

如你所知，由於每個條款是獨立的，你會得到短路的行爲。