T-SQL查询结果转换为变量

Question

I am trying to assign the result of a SQL query into a variable but running into issues.

Here is my query:

use db
SELECT name
,ID
,pID
,pName
,group
FROM mName as m
INNER JOIN pID_Check AS p ON m.ID= p.pID
WHERE p.pName NOT LIKE m.name

Query works fine however I'm trying to schedule it to run hourly via SQL Server Agent and email on results.
Most of the time the query will not return any data but in the event there are rows I need it to email out.
Essentially need values of the row added to @results variable and email triggered only if @results not null

SET @sub = 'Subject' 
EXEC msdb.dbo.sp_send_dbmail 
@profile_name = 'Profile',
@recipients = 'email@email.com;',
@body = @results,
@subject = @sub

Answer 1

You seem to want to send the result set to a mail recipient - while that is possible, I'm not aware of being possible to stick into the body in the method which you have attempted.
It can be included as an attachment via another property of SP_SEND_DBMAIL . Please see your example below, modified to include the result set as an attachment:

DECLARE @myquery varchar(max) = '
SELECT name
,ID
,pID
,pName
,group
FROM mName as m
INNER JOIN pID_Check AS p ON m.ID= p.pID
WHERE p.pName NOT LIKE m.name
'

SET @sub = 'Subject' 
EXEC msdb.dbo.sp_send_dbmail 
@profile_name = 'Profile',
@recipients = 'email@email.com;',
@body = @results,
@subject = @sub,
@query = @myquery,
@attach_query_result_as_file = 1,
@query_attachment_filename= 'MyFileName.csv';

All SP_SEND_DBMAIL properties can be seen here: https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/sp-send-dbmail-transact-sql