1、Last Name是指?
A.客人的姓氏
B.客人的名字
C.客人的付款方式
D.客人租车服务
第1题:
在SQL Server 2000中,现要在employees表的first_name和last_name列上建立一个唯一的非聚集复合索引,其中first_name列数据的重复率是5%,last_name列数据的重复率是10%。请补全下列语句使以first_name和last_name列作为条件的查询效率最高。
CREATE UNIQUE NONCLUSTERED INDEX Idx_Name
ON employees(______)
第2题:
The way in which people address each other depends on their age, sex, social group and personal relationship. The English system of address forms frequently used includes first name, last name, title+last name, (), and kin term.
第3题:
title+first name
title+title
title alone
first name+last name+title
第4题:
SORT BY age ASC, last_name
SORT BY age DESC, last_name
ORDER BY age DESC, last_name
ORDER BY age ASC, last_name
第5题:
SELECT COUNT (*) FROM employees WHERE last _name='smith';
SELECT COUNT (dept_id) FROM employees WHERE last _name='smith';
SELECT DISTINCT (COUNT (dept_id) FROM employees WHERE last _name='smith';
SELECT COUNT (DISTINCT dept_id) FROM employees WHERE last _name='smith';
SELECT UNIQE (dept_id) FROM employees WHERE last _name='smith';
第6题:
INSERT INTO employees VALUES (NULL, 'JOHN','Smith');
INSERT INTO employees( first_name, last_name) VALUES ('JOHN','Smith');
INSERT INTO employees VALUES ('1000','JOHN','NULL');
INSERT INTO employees(first_name,last_name, employee_id) VALUES ('1000, 'john','Smith');
INSERT INTO employees (employee_id) VALUES (1000);
INSERT INTO employees (employee_id, first_name, last_name) VALUES ( 1000, 'john',);
第7题:
INSERT INTO employees (employee_id, first_name, last_name, hire_date) VALUES (1000, 'John', 'smith','01/01/01);
INSERT INTO employees(employee_id, first_name, last_name, hire_date) VALUES (1000, 'John', 'smith','01 january 01');
INSERT INTO employees(employee_id, first_name, last_name, Hire_date) VALUES (1000, 'John', 'smith', To_ date ('01/01/01));
INSERT INTO employees(employee_id, first_name, last_name, hire_date) VALUES (1000, 'John', 'smith','01-Jan-01');
第8题:
The way in which people address each other depends on their age, sex, social group and personal relationship. The English system of address forms frequently used includes first name, last name, title+last name, (), and kin term.
Atitle+first name
Btitle+title
Ctitle alone
Dfirst name+last name+title
第9题:
您要对EMPLOYEES表的FIRST_NAME和LAST_NAME列创建一个组合索引。以下哪条语句将完成此任务()
第10题:
SELECT last_name FROM EMP WHERE last_ name LIKE '_A%';
SELECT last_name FROM EMP WHERE last name ='*A%'
SELECT last_name FROM EMP WHERE last name ='_A%';
SELECT last_name FROM EMP WHERE last name LIKE '*A%'
第11题:
SELECT &1, &2 FROM &3 WHERE last_name = '&8';
SELECT &1, '&2' FROM &3 WHERE '& last_name = '&8';
SELECT &1, &2 FROM &3 WHERE last_name = '&8';
SELECT &1, '&2' FROM EMP WHERE last_name = '&8';
第12题:
UPDATE employees SET first_name = 'John' SET last_name = 'Smith' WHERE employee_id = 180;
UPDATE employees SET first_name = 'John', SET last_name = 'Smoth' WHERE employee_id = 180;
UPDATE employee SET first_name = 'John' AND last_name = 'Smith' WHERE employee_id = 180;
UPDATE employee SET first_name = 'John', last_name = 'Smith' WHERE employee_id = 180;
第13题:
SELECT last_name, department_name FROM employees NATURAL JOIN departments;
SELECT last_name, department_name FROM employees JOIN departments ;
SELECT last_name, department_name FROM employees e JOIN departments d ON (e.department_id = d.department_id);
SELECT last_name, department_name FROM employees e RIGHT OUTER JOIN departments d ON (e.department_id = d.department_id);
SELECT last_name, department_name FROM employees FULL JOIN departments ON (e.department_id = d.department_id);
SELECT last_name, department_name FROM employees e LEFT OUTER JOIN departments d ON (e.department_id = d.department_id);
第14题:
CREATE INDEX NAME _IDX (first_name, last_name);
CREATE INDEX NAME _IDX (first_name, AND last_name)
CREATE INDEX NAME_IDX ON (First_name, last_name);
CREATE INDEX NAME_IDX ON employees (First_name, AND last_name);
CREATE INDEX NAME_IDX ON employees (First_name, last_name);
CREATE INDEX NAME_IDX FOR employees (First_name, last_name);