UPDATE [table]
SET [column] = REPLACE([column], '/foo/', '/bar/')

UPDATE CustomReports_Ta
SET vchFilter = REPLACE(CAST(vchFilter AS nvarchar(max)), '\\Ingl-report\Templates', 'C:\Customer_Templates')
where CAST(vchFilter AS nvarchar(max)) LIKE '%\\Ingl-report\Templates%'

没有CAST函数，我得到了一个错误

参数数据类型ntext对于replace函数的参数1无效。

很简单:

update my_table
set path = replace(path, 'oldstring', 'newstring')

我尝试了上面的方法，但是没有得到正确的结果。下面的一个是:

update table
set path = replace(path, 'oldstring', 'newstring') where path = 'oldstring'

您可以使用这个查询

update table_name set column_name = replace (column_name , 'oldstring' ,'newstring') where column_name like 'oldstring%'

你也可以在运行时为电子邮件模板替换大文本，这是一个简单的例子。

DECLARE @xml NVARCHAR(MAX)
SET @xml = CAST((SELECT [column] AS 'td','',        
        ,[StartDate] AS 'td'
         FROM [table] 
         FOR XML PATH('tr'), ELEMENTS ) AS NVARCHAR(MAX))
select REPLACE((EmailTemplate), '[@xml]', @xml) as Newtemplate 
FROM [dbo].[template] where id = 1