不知道Oracle怎么进行数据分栏(分栏: 因数据列过长, 部分数据作为新列显示). 在这里先记录一下粗浅的查询方法. 数据源例子: select 日用百货 as cat, 手电筒 as name, 20 as amount, 2024-01-27 as dt from dualunion allselect 餐饮美食 as cat, 鸡公煲 as name, 15.9 as amo…
选择题
class HelloA{public HelloA(){System.out.println("I’m A class ");}static{System.out.println("static A");}
}
public class Test01 extends HelloA{public Test01(){System.out.println("I’m B class");}static{System.out.print…