1 . SQL 指的是?
Strong Question Language
Structured Question Language
Structured Query Language
2 . 哪个 SQL 语句用于从数据库中提取数据?
EXTRACT
SELECT
OPEN
GET
3 . 哪条 SQL 语句用于更新数据库中的数据?
MODIFY
SAVE AS
UPDATE
SAVE
4 . 哪条 SQL 语句用于删除数据库中的数据?
COLLAPSE
DELETE
REMOVE
5 . 哪条 SQL 语句用于在数据库中插入新的数据?
INSERT NEW
ADD RECORD
ADD NEW
INSERT INTO
6 . 通过 SQL,您如何从 "Persons" 表中选取 "FirstName" 列?
SELECT Persons.FirstName
SELECT FirstName FROM Persons
EXTRACT FirstName FROM Persons
7 . 通过 SQL,您如何从 "Persons" 表中选取所有的列?
SELECT [all] FROM Persons
SELECT Persons
SELECT * FROM Persons
SELECT *.Persons
8 . 通过 SQL,您如何从 "Persons" 表中选取 "FirstName" 列的值等于"Peter" 的所有记录?
SELECT [all] FROM Persons WHERE FirstName='Peter'
SELECT * FROM Persons WHERE FirstName LIKE 'Peter'
SELECT [all] FROM Persons WHERE FirstName LIKE 'Peter'
SELECT * FROM Persons WHERE FirstName='Peter'
9 . 通过 SQL,您如何从 "Persons" 表中选取 "FirstName" 列的值以 "a" 开头的所有记录?
SELECT * FROM Persons WHERE FirstName LIKE 'a%'
SELECT * FROM Persons WHERE FirstName='a'
SELECT * FROM Persons WHERE FirstName LIKE '%a'
SELECT * FROM Persons WHERE FirstName='%a%'
10 . 请判断下列说法是否正确:当所列出的某个条件为 true 时,OR 运算符会显示记录。当列出的所有条件为 true 时,AND 运算符会显示记录。
正确
错误
11 . 通过 SQL,您如何在表 Persons 中选择 FirstName 等于 Thomas 而 LastName 等于 Carter 的所有记录?
SELECT * FROM Persons WHERE FirstName LIKE 'Thomas' AND LastName LIKE 'Carter'
SELECT FirstName='Thomas', LastName='Carter' FROM Persons
SELECT * FROM Persons WHERE FirstName='Thomas' AND LastName='Carter'
12 . 通过 SQL,您如何按字母顺序选取 Persons 表中 LastName 介于 Adams 和 Carter 的所有记录?
SELECT * FROM Persons WHERE LastName BETWEEN 'Adams' AND 'Carter'
SELECT * FROM Persons WHERE LastName>'Adams' AND LastName<'Carter'
SELECT LastName>'Adams' AND LastName<'Carter' FROM Persons
13 . 哪条 SQL 语句可返回唯一不同的值?
SELECT DIFFERENT
SELECT DISTINCT
SELECT UNIQUE
14 . 哪个 SQL 关键词用于对结果集进行排序?
ORDER
SORT BY
SORT
ORDER BY
15 . 通过 SQL,您如何根据 "FirstName" 列降序地从 "Persons" 表返回所有记录?
SELECT * FROM Persons SORT 'FirstName' DESC
SELECT * FROM Persons ORDER BY FirstName DESC
SELECT * FROM Persons ORDER FirstName DESC
SELECT * FROM Persons SORT BY 'FirstName' DESC
16 . 通过 SQL,您如何向 "Persons" 表插入新的记录?
INSERT ('Jimmy', 'Jackson') INTO Persons
INSERT VALUES ('Jimmy', 'Jackson') INTO Persons
INSERT INTO Persons VALUES ('Jimmy', 'Jackson')
17 . 通过 SQL,您如何向 "Persons" 表中的 "LastName" 列插入 "Wilson" ?
INSERT INTO Persons (LastName) VALUES ('Wilson')
INSERT ('Wilson') INTO Persons (LastName)
INSERT INTO Persons ('Wilson') INTO LastName
18 . 您如何把 "Persons" 表中 "LastName" 列的 "Gates" 改为 "Wilson" ?
MODIFY Persons SET LastName='Wilson' WHERE LastName='Gates'
UPDATE Persons SET LastName='Wilson' WHERE LastName='Gates'
UPDATE Persons SET LastName='Wilson' INTO LastName='Gates'
MODIFY Persons SET LastName='Wilson' INTO LastName='Gates'
19 . 通过 SQL,您如何在 "Persons" 表中删除 "FirstName" 等于 "Fred" 的纪录?
DELETE FROM Persons WHERE FirstName = 'Fred'
DELETE FirstName='Fred' FROM Persons
DELETE ROW FirstName='Fred' FROM Persons
20 . 通过 SQL,您如何返回 "Persons" 表中记录的数目?
SELECT COLUMNS() FROM Persons
SELECT COLUMNS(*) FROM Persons
SELECT COUNT() FROM Persons
SELECT COUNT(*) FROM Persons
1.SQL 指的是?
您的回答:Structured Query Language
2.哪个 SQL 语句用于从数据库中提取数据?
您的回答:SELECT
3.哪条 SQL 语句用于更新数据库中的数据?
您的回答:UPDATE
4.哪条 SQL 语句用于删除数据库中的数据?
您的回答:DELETE
5.哪条 SQL 语句用于在数据库中插入新的数据?
您的回答:INSERT INTO
6.通过 SQL,您如何从 "Persons" 表中选取 "FirstName" 列?
您的回答:SELECT FirstName FROM Persons
7.通过 SQL,您如何从 "Persons" 表中选取所有的列?
您的回答:SELECT * FROM Persons
8.通过 SQL,您如何从 "Persons" 表中选取 "FirstName" 列的值等于"Peter" 的所有记录?
您的回答:SELECT * FROM Persons WHERE FirstName='Peter'
9.通过 SQL,您如何从 "Persons" 表中选取 "FirstName" 列的值以 "a" 开头的所有记录?
您的回答:SELECT * FROM Persons WHERE FirstName LIKE 'a%'
10.请判断下列说法是否正确:当所列出的某个条件为 true 时,OR 运算符会显示记录。当列出的所有条件为 true 时,AND 运算符会显示记录。
您的回答:正确
11.通过 SQL,您如何在表 Persons 中选择 FirstName 等于 Thomas 而 LastName 等于 Carter 的所有记录?
您的回答:SELECT * FROM Persons WHERE FirstName='Thomas' AND LastName='Carter'
12.通过 SQL,您如何按字母顺序选取 Persons 表中 LastName 介于 Adams 和 Carter 的所有记录?
您的回答:SELECT * FROM Persons WHERE LastName BETWEEN 'Adams' AND 'Carter'
13.哪条 SQL 语句可返回唯一不同的值?
您的回答:SELECT DISTINCT
14.哪个 SQL 关键词用于对结果集进行排序?
您的回答:ORDER BY
15.通过 SQL,您如何根据 "FirstName" 列降序地从 "Persons" 表返回所有记录?
您的回答:SELECT * FROM Persons ORDER BY FirstName DESC
16.通过 SQL,您如何向 "Persons" 表插入新的记录?
您的回答:INSERT INTO Persons VALUES ('Jimmy', 'Jackson')
17.通过 SQL,您如何向 "Persons" 表中的 "LastName" 列插入 "Wilson" ?
您的回答:INSERT INTO Persons (LastName) VALUES ('Wilson')
18.您如何把 "Persons" 表中 "LastName" 列的 "Gates" 改为 "Wilson" ?
您的回答:UPDATE Persons SET LastName='Wilson' WHERE LastName='Gates'
19.通过 SQL,您如何在 "Persons" 表中删除 "FirstName" 等于 "Fred" 的纪录?
您的回答:DELETE FROM Persons WHERE FirstName = 'Fred'
20.通过 SQL,您如何返回 "Persons" 表中记录的数目?
您的回答:SELECT COUNT(*) FROM Persons