Question

我有一个向客户发送生日电子邮件的代码，查询工作正常，但是SQL Mail服务器始终向所有客户发送生日电子邮件，即使他没有生日

use Insurance
go


select 
  Customer.CustomerID
  ,Customer.FirstName
  ,Customer.LastName
  ,Customer.Birthday
  ,Customer.Email

from Customer
where Customer.CustomerID = Customer.CustomerID and 
                DAY([Birthday]) = DAY(GETDATE())
                AND MONTH([Birthday]) = MONTH(GETDATE())

declare @Receipientlist nvarchar(4000)

set @Receipientlist =
      STUFF((select ';' + Email FROM dbo.Customer FOR XML PATH('')),1,1,'')



EXEC msdb.dbo.sp_send_dbmail @profile_name='test',
    @recipients=@Receipientlist,
    @subject='Insurance',
    @body='Happy Birthday.
      Today is your Birthday.'

Answer 1

您在批次顶部的查询与您执行manifest的语句无关。如果只想通过电子邮件发送客户生日的信息，则需要在创建收件人的语句中进行过滤（并且不需要上一个语句）：

msdb.dbo.sp_send_dbmail

我还改变了使用DECLARE @RecipientList nvarchar(4000); --I removed the CustomerID = CustomerID clause, as it'll always equal itself, --apart from when it's value is NULL (and I doubt it'll ever be NULL) SET @RecipientList = STUFF((SELECT N';' + Email FROM dbo.Customer WHERE DAY([Birthday]) = DAY(GETDATE()) AND MONTH([Birthday]) = MONTH(GETDATE()) FOR XML PATH(N''),TYPE).value('.','nvarchar(4000)'), 1, 1,N''); EXEC msdb.dbo.sp_send_dbmail @profile_name = 'test', @recipients = @RecipientList, @subject = 'Insurance', @body = 'Happy Birthday. Today is your Birthday.';和TYPE子句从子查询返回值的方式。电子邮件地址可以包含一些特殊字符，这些特殊字符将在不使用value的情况下被转义（例如，TYPE将变为&）。 （我还纠正了&的拼写。）

EXEC msdb.dbo.sp_send_dbmail忽略查询

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