题目内容

查找条件为:姓名(name)不是NULL的记录( )

A. WHERE name ! NULL
B. WHERE name NOT NULL
C. WHERE name IS NOT NULL
D. WHERE name!=NULL

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A. CREATE
B. INSERT
C. SAVE
D. UPDATE

A. DELETE FROM emp WHERE name='dony';
B. DELETE * FROM emp WHERE name='dony';
C. DROP FROM emp WHERE name='dony';
DROP * FROM emp WHERE name='dony';

A. ORDER BY DESC name
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A. 删除当前数据库中整个employee表,包括表结构
B. 删除当前数据库中employee表内的所有行
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