A.sp_renamedb authors student B.sp_rename authors student C.sp_renamedata authors student D.sp_renameview authors student
A.sp_spaceused authors B.sp_depends authors C.sp_help authors D.sp_renamedb authors student
ALTER TABLE exa ADD column_b VARCHAR(20) NULL 這條語句的語義為()
A.創(chuàng)建表格exa,使其增加一列 B.創(chuàng)建表格exa,使其刪除一列 C.修改表格exa 定義,使其增加一列 D.修改表格 exa 定義,使其刪除一列