A.别名.
B.别名->
C.别名<-
D.别名=>
A.使用全关联:selectt1.*,t2.*fromdim_usert1fullouterjoindim_user_extt2ont1.user_id=t2.user_id
B.使用右关联:selectt1.*,t2.*fromdim_usert1rightjoindim_user_extt2ont1.user_id=t2.user_id
C.使用左关联:selectt1.*,t2.*fromdim_usert1leftjoindim_user_extt2ont1.user_id=t2.user_id
D.使用内关联:selectt1.*,t2.*fromdim_usert1joindim_user_extt2ont1.user_id=t2.user_id
A.“过冬”
B.“贴秋膘”
C.“打秋风”
D.“咬秋”
A..input-group-btn
B..input-group-addon
C.form-control
D.input-group-extra