小编use*_*323的帖子

所需的输出为每一行保留前两个"列",并在同一行上添加"word"的出现次数.

输入:

string1 string2 aaaaaaaaa word aaaaaaaa word  
string3 string4 ccccccccccc word dddaaaaaaacccd word dddddaaaaa word bbbb  
string5 string6 aaaa word bbbbbbaddd word aaaaa word ccccccdddddddddd word cccccc

期望的输出:

string1 string2 2  
string3 string4 3  
string5 string6 4

有什么建议？

从EMPLOYEE表中,我想对记录数量(雇用的员工)进行分组,并且每天运行TOTAL.输入的格式如下:

rownum  Hired_date_time
1       1/10/2012 11:00
2       1/10/2012 13:00
3       20/11/2012 10:00
4       20/11/2012 15:00
5       20/11/2012 16:00
6       30/12/2012 1:00

所需的输出:

Hired_date.......Hired_per_day.........TOTAL_number_of_employees
1/10/2012 ...................2 ........2
20/11/2012 ..................3 ........5
30/12/2012 ..................1 ....... 6

GROUPING PERDAY没问题:

select  trunc(Hired_date_time) as "Hired_date" , 
        count(*) as "Hired_per_day"
from employee
group by trunc(Hired_date_time)
order by trunc(Hired_date_time);

问题:如何使用窗口函数获得总计(在最后一列中)