A.DROP TABLE userInfo
B.TRUNCATE TABLE userInfo
C.DELETE FROM userInfo
D.DROP FROM userInfo
A、dump database TopoDB with no_log
B、dum ptran TopoDB with no_log
C、truncate TopoDB withno_log
D、truncate database TopoDB with no_log
A.CREATE,DROP,GRANT
B.CREATE,DROP,ALTER
C.CREATE,DROP,UPDATE
D.CREATE,DROP,SELECT
A.DROP VIEW<视图名>
B.CREATE VIEW<视图名>AS<SELECT命令>
C.DROP TABLE<表名>
D.DROP INDEX<索引标识名>