A. 为表的所有字段添加数据 B. 为表的指定字段添加数据 C. 同时添加多条记录 D. 以上说法都正确
A. 更新student表中第一条记录 B. 出错语法错误 C. 更新student表中最后一条记录 D. 更新 student表中每一条记录
A. update into user set id = 'u001'; B. update user set id = 'u001' and username='jack'; C. update user set username='jack' where id = 1; D. update into user set id = 'u001', username='jack';
A. DISTINCT B. HAVING C. ORDER BY D. LIMIT
A. SELECT B. FROM C. ORDER BY D. HAVING
A. WHILE B. GROUP BY C. WHERE D. HAVING
A. SEELCT B. GROUP BY C. LIMIT D. ORDER BY