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＜select name=*＞...＜/select＞标记的作用是下拉菜单框。（)

＜select name=*＞...＜/select＞标记的作用是下拉菜单框。()

提问人：网友15***739 发布时间：2022-01-06

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第1题

关于select语句下列说法正确的是（）

A、select (name) from table person: 所有记录的name字段的值

B、select (name) from person where age=12 or name=’aa‘; or 或者

C、select (name) from table person where age=12; 查找age=12的记录的那个字段的值

D、select (name，age) from person where age=12 and name=‘aa’; and 并且

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第2题

SELECT name FROM table1 INTERSECT SELECT name FROM table2 是查询字段相同的两个数据表的并集。

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第3题

下面SQL语句中不正确的一项是

A、select name from reviewer,rating where reviewer.rid=rating.rid group by reviewer.rid

B、select name from reviewer,rating where reviewer.rid=rating.rid having count(stars)＞=3

C、select name from reviewer,rating group by reviewer.rid having count(stars)＞=3

D、select name from reviewer,rating group by reviewer.rid where count(stars)＞=3

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第4题

现有表stu（id,name,sex,class)和索引 idx_key1（name,class),下列可以使用覆盖索引的查询包括：

A、select count(name) from stu;

B、select name,class from stu where name='pw';

C、select name,class,sex from stu where name='pw' and class='class-05-12';

D、select * from stu where class='class-05-12';

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第5题

$User = M（"homeworkStatistics"); $condition['name'] = 'thinkphp'; $condition['status'] = 1; $User-＞where（$condition)-＞select（); 最后生成的SQL语句是

A、SELECT * FROM think_homeworkStatistics WHERE `name`='thinkphp' AND condition=1

B、SELECT * FROM think_homeworkStatistics WHERE `condition`='thinkphp' AND status=1

C、SELECT * FROM think_homeworkStatistics WHERE `condition`='thinkphp' OR condition=1

D、SELECT * FROM think_homeworkStatistics WHERE `name`='thinkphp' AND status=1

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第6题

数据库中有一张表名称为Student，有列Name，Age，IDCard，Sex。要求写SQL语句查询出表中所有的数据，下列哪个SQL语句是正确的（）

A、Select * From Student

B、Select Name From Student

C、Select Name,Age,IDCard From Student

D、Select Name Age IDCard Sex From Student

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第7题

设置select元素的（)属性可实现多选。

A.value

B.selected

C.name

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第8题

You need to produce a report for mailing labels for all customers. The mailing label must

have only the customer name and address. The CUSTOMERS table has these columns:Which SELECT statement accomplishes this task？（）

You need to produce a report for mailing labels fo

A. SELECT* FROM customers;

B. SELECT name, address FROM customers;

C. SELECT id, name, address, phone FROM customers;

D. SELECT cust_name, cust_address FROM customers;

E. SELECT cust_id, cust_name, cust_address, cust_phone FROM customers;

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第9题

您需要显示从20XX年1月1日到20XX年12月31日雇佣的所有职员的姓名和雇佣日期。职员信息表tblEmployees包含列Name和列HireDate，下面哪些语句能完成该功能（)

A、SELECT Name, HireDate FROM tblEmployees

B、SELECT Name, HireDate FROM tblEmployees WHERE HireDate =’2009-01-01’ OR ‘2009-12-31’

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第10题

Examine the description of the EMPLOYEES table:EMP_ID NUMBER（4) NOT NULLLAST_NAME VARCHAR2

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A. SELECT COUNT (*) FROM employees WHERE last _name=‘smith‘;

B. SELECT COUNT (dept_id) FROM employees WHERE last _name=‘smith‘;

C. SELECT DISTINCT (COUNT (dept_id) FROM employees WHERE last _name=‘smith‘;

D. SELECT COUNT (DISTINCT dept_id) FROM employees WHERE last _name=‘smith‘;

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