20.在存储过程的定义中,其参数的输入输出类型包括()

A. 打开->读取->关闭

B. 声明->填充内容->读取->关闭

C. 声明->打开->读取->关闭

D. 声明->填充内容->打开->读取->关闭

A. DELETE FROM user where id>5;

B. DELETE FROM user set id>5;

C. DELETE user where id>5;

D. DELETE user set id>5;

A. TE USER语句创建新用户时,可以同时为新用户分配相应的权限。

A. SELECT user FROM mysql.user;

B. SELECT USER();

C. SELECT * FROM user,

D. SELECT user FROM mysql;