A.错误
B.正确
A.DELETEFORAGE30
B.DELETEFROMSWHEREAGE30
C.DELETESFORAGE30
D.DELETESWHEREAGE30
B.DELETE
C.DROP
D.DROP COLUMN
T、对
F、错
T.对
F.错
A、DROP SCHEMA命令
B、DROP TABLE命令
A.create age from ST
B.alterstable ST drop age
C.update ST age
D.alter table ST drop column age