TRIM 根据条件

Question

我有以下声明。我正在尝试使用 CASE 函数删除任何以 "COD - "

开头的帐户名前面的 "COD - "

SELECT
     DCLink
   , CASE
         WHEN LEFT(Client.Account, 6) = 'COD - ' THEN LTRIM(Client.Account)
         ELSE Client.Account
     END AS CustName
   , Client.Name AS AccName
   , Client.Contact_Person
   , Client.Telephone AS Telephone_1
   , Client.Telephone2 AS Telephone_2
   , Client.Fax1 AS Fax_1
   , Client.Fax2 AS Fax_2
   , Client.Tax_Number AS VATNumber
   , Client.EMail
   , SalesRep.Code
   , SalesRep.Name
   , CONCAT(Client.Physical1, ' ', Client.Physical2, ' ', Client.Physical3, ' ', Client.Physical4, ' ', Client.Physical5, ' ', Client.PhysicalPC) AS CustPhysical
   , CONCAT(Client.Post1, ' ', Client.Post2, ' ', Client.Post3, ' ', Client.Post4, ' ', Client.Post5, ' ', Client.PostPC) AS CustPost
FROM Client
INNER JOIN SalesRep ON SalesRep.idSalesRep = Client.RepID

我觉得我只是错过了一个简单的步骤？

也就是说，数据库中可能存在以下两个客户账户名：

Wonderful Sweets Ltd
COD - Thirsty Beverages Ltd

我想说的是，如果账户名以字符串"COD - "开头，则必须去掉那部分。

Answer 1

使用替换语句将 'COD' 替换为您想要的任何值。看看这里：https://msdn.microsoft.com/en-za/library/ms186862.aspx

Answer 2

SELECT
     DCLink
   , REPLACE(Client.Account,'COD - ','') AS CustName
   , Client.Name AS AccName
   , Client.Contact_Person
   , Client.Telephone AS Telephone_1
   , Client.Telephone2 AS Telephone_2
   , Client.Fax1 AS Fax_1
   , Client.Fax2 AS Fax_2
   , Client.Tax_Number AS VATNumber
   , Client.EMail
   , SalesRep.Code
   , SalesRep.Name
   , CONCAT(Client.Physical1, ' ', Client.Physical2, ' ', Client.Physical3, ' ', Client.Physical4, ' ', Client.Physical5, ' ', Client.PhysicalPC) AS CustPhysical
   , CONCAT(Client.Post1, ' ', Client.Post2, ' ', Client.Post3, ' ', Client.Post4, ' ', Client.Post5, ' ', Client.PostPC) AS CustPost
FROM Client
INNER JOIN SalesRep ON SalesRep.idSalesRep = Client.RepID

TRIM 根据条件

TRIM based on a condition

sql-server

sql-server-2016