发布时间:2014-02-10 13:14:37
select regexp_substr('1,2,3,4,5,6','[^,]+',1,rownum) remindId,1 remindTypefrom dual connect by rownum <=length('1,2,3,4,5,6')-length(replace('1,2,3,4,5,6',',',''))+1......【阅读全文】
发布时间:2013-11-18 11:42:25
问题create table abc(A int,B int) Select A,count(B) as total from ABC group by ASelect A,count(B) as total1 from ABC where B > 30 group by ASelect A,count(B) as totlal2 from ABC where B > 20 group by A如何合并这三个查询?得到一个查询结果:A,total,total1,total2解决方案:Select A,count(B) .........【阅读全文】
发布时间:2013-10-30 11:01:55
外部类或外部接口:类修饰符只有public、默认。即public class A、class A、public interface B、interface B内部类:类修饰符可以为任意。即public class Inner、class Inner、protected class Inner、private class Inner内部接口:1、外部接口中定义的内部接口修饰符只有public,若不写public则默认的也为public。inte.........【阅读全文】
发布时间:2013-10-21 01:14:34
1、下载老毛桃,是用老毛桃制作usb启动盘:如下图2、接下来按照下面链接的第3步来做,就可以了http://pan.baidu.com/share/link?shareid=173277684&uk=1662238964......【阅读全文】