結合多個WHERE子句

Question

我有以下select語句正在爲我工​​作。

select * 
from BND_listing right 
join BND_ListingCategories on BND_Listing.CatID = BND_ListingCategories.CatID 
where 
    (CategoryName = '[querystring:filter-Category]' or 
    '[querystring:filter-Category]' = 'All') 
    and (City = '[querystring:filter-City]' or 
     '[querystring:filter-City]' = 'All') 
    and (Region = '[querystring:filter-State]' or 
     '[querystring:filter-State]' = 'All') 
    and (Country = '[querystring:filter-Country]' or 
     '[querystring:filter-Country]' = 'All') 
    and isnull(Company,'') <> '' 
order by 
    Company asc 

除了想它做什麼我包括以下WHERE子句，基本上只允許我創建一個「搜索框」

DECLARE @param VARCHAR(MAX) 
SET @param = '[querystring:searchterm]' 

SELECT Company 
FROM BND_Listing 
WHERE Company LIKE '%' + @param + '%' 

是否有可能這兩個結合起來選擇一個語句並保留所有功能？

Answer 1

DECLARE @param VARCHAR(MAX) 
SET @param = '[querystring:searchterm]' 


select * 
from BND_listing right 
join BND_ListingCategories on BND_Listing.CatID = BND_ListingCategories.CatID 
where 
    (CategoryName = '[querystring:filter-Category]' or 
    '[querystring:filter-Category]' = 'All') 
    and (City = '[querystring:filter-City]' or 
     '[querystring:filter-City]' = 'All') 
    and (Region = '[querystring:filter-State]' or 
     '[querystring:filter-State]' = 'All') 
    and (Country = '[querystring:filter-Country]' or 
     '[querystring:filter-Country]' = 'All') 
    and isnull(Company,'') <> '' 
    AND Company LIKE '%' + @param + '%' 
order by 
    Company asc