01.SQL 指的是？

• Strong Question Language
• Structured Question Language
• Structured Query Language

02.哪个 SQL 语句用于从数据库中提取数据？

• EXTRACT
• SELECT
• OPEN
• GET

03.哪条 SQL 语句用于更新数据库中的数据？

• MODIFY
• SAVE AS
• UPDATE
• SAVE

04.哪条 SQL 语句用于删除数据库中的数据？

• COLLAPSE
• DELETE
• REMOVE

05.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

06.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

07.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

08.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'

09.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