A.DROP
B.UPDATE
C.DELETE
D.DELETED
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A.函数型
B.高级算法
C.关系数据库
D.人工智能
A.ORDER BY
B.ORDERED BY
C.GROUP BY
D.GROUPED BY
A.create mytest
B.create table mytest
C.database mytest
D.create database mytest
A.SELECT
B.ALL
C.LINK
D.UNION
A.alter table emp delete column addcolumn;
B.alter table emp modify column addcolumn char(10);
C.alter table emp change addcolumn addcolumn int;
D.alter table emp add column addcolumn int;
A.DROP USER
B.DROP TABLE USER
C.DELETE USER
D.DELETE FROM USER
若用如下的SQL语句创建了一个表SC:()
CREATE TABLE SC(S# CHAR(6) NOT NULL,C# CHAR(3) NOT NULL,SCORE INTEGER, NOTE CHAR(20));向SC表插入如下行时,()行可以被插入。
A.(NULL,’103’,80,’选修’)
B.(’200823’,’101’,NULL,NULL)
C.(’201132’,NULL,86,’’)
D.(’201009’,’111’,60,必修)
A.左外连接
B.内连接
C.中间连接
D.交叉连接
A.MATCH()
B.AGAINST()
C.FULLTEXT()
D.REGEXP()
A.UPDATE
B.CREATE
C.UPDATED
D.ALTER