假设数据表 “test1” 中有 10 条数据行,可获得最前面两条数据行的命令为( ) -题库考试答案搜索网

假设数据表 “test1” 中有 10 条数据行,可获得最前面两条数据行的命令为( )

单选题

2021-09-01 23:02

A、SELECT 2 * FROM test1
B、SELECT TOP 2 * FROM test1
C、SELECT PERCENT 2 * FROM test1
D、SELECT PERCENT 20 * FROM test1

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正确答案

B

试题解析

标签：青书学堂南阳理工学院数据库原理及应用

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