MySQL存储过程查询

Question

i have the following stored procedure that returns the sent emails of the latest or last inserted campaigns

"Now my aim to only show the campaigns which have "sent: count greater than "0" how could i make changes to the following sp to do it, because now it is returning all the campaigns including "0" and greater than "0" "..

Code is...

DELIMITER $$

DROP PROCEDURE IF EXISTS `couponcrusaderdev`.`sp_tblemailcampaignLoadTop4`$$

CREATE DEFINER=`anyone`@`000.000.00.00` PROCEDURE `sp_tblemailcampaignLoadTop4`(p_UserID Int(11))
    SQL SECURITY INVOKER
BEGIN
SELECT EC.*,(Select MailChimpCampaignID from tblcampaignschedule where EC.CampaignID=tblcampaignschedule.CampaignID ) as MailChimpCampaignID,(Select  count(MailChimpCampaignID) from tblcampaignschedule) as msent,CT.CampaignType, (Select tblcampaignschedule.ScheduleDateTime from tblcampaignschedule 
where EC.CampaignID=tblcampaignschedule.CampaignID  order By ScheduleDateTime desc limit 1) as CampaignDateTime,
(Select Count(*) from tblemailsent ES
inner join tblcampaignschedule CS on CS.CampaignSceduleID= ES.CampaignSceduleID
where ES.Status= 'ProcessedMessage' and CS.CampaignID = EC.CampaignID)as Sent
FROM tblemailcampaign EC
inner join tblcampalgntype  CT on CT.CampaignTypeID= EC.CampaignTypeID
inner join tblcompanies C On EC.CompanyID = C.CompanyID
WHERE (p_UserID = 0 OR C.AddUserID = p_UserID)
 order by CampaignDateTime desc limit 4
;
END$$

DELIMI

Answer 1

You should use HAVING

 HAVING COUNT(sent) >= 0;

Manual:
http://dev.mysql.com/doc/refman/5.0/en/group-by-hidden-columns.html