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我有一个执行查询然后调用 dbmail 的存储过程。邮件消息包括执行的查询结果。我想在两个地方都将参数/变量传递给查询:存储过程和dbmail中的@query。下面是我想要运行它的方式,但由于参数 (@Threshold) 未传递给 dbmail 块,因此出现错误。我怎样才能做到这一点?

ALTER PROCEDURE [dbo].[spMyProcedure] @Threshold float

AS

IF EXISTS (SELECT Fields FROM Table
WHERE DataValue < @Threshold AND LocalDateTime >= DATEADD(hour, -24, SYSDATETIME())
GROUP BY Fields)

BEGIN

SET NOCOUNT ON

EXEC msdb.dbo.sp_send_dbmail
@profile_name = 'Profile',
@from_address = 'data@data.com',
@recipients = 'data@data.com',
@subject = 'Data Warning',
@body = 'The following results are outside the defined range.',
@query = 'SELECT Fields FROM Table
WHERE DataValue < @Threshold AND LocalDateTime >= DATEADD(hour, -24, SYSDATETIME())
GROUP BY Fields' ;

END
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1 回答 1

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您将字符串传递给@query 参数,因此它不知道@Threshold 的值。您需要创建一个字符串变量并包含实际值。然后,您可以将该变量传递给 sp_send_dbmail 过程。

DECLARE @qry varchar(MAX)
SET @qry = 'SELECT Fields FROM Table WHERE DataValue < ' 
+ cast(@Threshold as varchar) + 
' AND LocalDateTime >= DATEADD(hour, -24, SYSDATETIME()) GROUP BY Fields' 
于 2014-01-24T03:22:09.360 回答