Mysql触发器示例

begin
declare x int(11);
declare r int(11);

set r= (select Rule from qn_huiyuan_grade g where g.MId=NEW.MId and g.mpOrgId=NEW.mpOrgId limit 1);

if r=1
then

set x = (select ID from qn_huiyuan_grade g
where g.BeginValue<=NEW.VipTotalBalance and g.EndValue>=NEW.VipTotalBalance and NEW.MId=g.MId and NEW.mpOrgId=g.mpOrgId limit 1);

elseif r=0
then

set x = (select ID from qn_huiyuan_grade g
where g.BeginValue<=NEW.VipTotalScore and g.EndValue>=NEW.VipTotalScore and NEW.MId=g.MId and NEW.mpOrgId=g.mpOrgId limit 1);

END IF;

set NEW.VipGrade=x;

end