试题详情
- 单项选择题以下关于PL/SQL块的说法正确的是()
A、匿名块(Anonymous Blocks)是在客户端解析后再送到服务器端执行的
B、子程序(Subprograms)是被命名的PL/SQL块,存储在数据库服务器端
C、匿名块比子程序执行效率要高
D、无论是匿名块还是子程序,其实都是PL/SQL块,在定义变量前都要以DECLARE关键字开始
E、过程(procedure)无返回值,而函数(function)是有返回值的
- B
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