A.insert into
B.replace into
C.insert from
D.replace from

A.Create table
B.rename table
C.alter table
D.drop table

A.use xscj
B.use xs
C.rename table xs to xs1
D.rename database xscj to xscj1

A.Create database
B.use database
C.alter database
D.drop database

A.Create table
B.rename table
C.alter table
D.drop table

A.Create database
B.use database
C.alter database
D.drop database

A.东北
B.财经
C.大学
D.东财

A.b
B.a
C.abaa
D.false

A.1234
B.2431
C.4321
D.4213